X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/985e04597a9f1ddc4a3b406d0fb33722e097ee8b..0459461f9ea42e0b090759ff6fe5f48360bef750:/wp-includes/taxonomy.php diff --git a/wp-includes/taxonomy.php b/wp-includes/taxonomy.php index 40a22f29..c6d3b6e2 100644 --- a/wp-includes/taxonomy.php +++ b/wp-includes/taxonomy.php @@ -1,10 +1,9 @@ false, 'rewrite' => false, 'public' => false, - 'show_ui' => false, + 'show_ui' => true, '_builtin' => true, ) ); @@ -127,19 +130,22 @@ function create_initial_taxonomies() { 'show_in_nav_menus' => current_theme_supports( 'post-formats' ), ) ); } -add_action( 'init', 'create_initial_taxonomies', 0 ); // highest priority /** - * Get a list of registered taxonomy objects. + * Retrieves a list of registered taxonomy names or objects. * * @since 3.0.0 - * @uses $wp_taxonomies * - * @param array $args An array of key => value arguments to match against the taxonomy objects. - * @param string $output The type of output to return, either taxonomy 'names' or 'objects'. 'names' is the default. - * @param string $operator The logical operation to perform. 'or' means only one element - * from the array needs to match; 'and' means all elements must match. The default is 'and'. - * @return array A list of taxonomy names or objects + * @global array $wp_taxonomies The registered taxonomies. + * + * @param array $args Optional. An array of `key => value` arguments to match against the taxonomy objects. + * Default empty array. + * @param string $output Optional. The type of output to return in the array. Accepts either taxonomy 'names' + * or 'objects'. Default 'names'. + * @param string $operator Optional. The logical operation to perform. Accepts 'and' or 'or'. 'or' means only + * one element from the array needs to match; 'and' means all elements must match. + * Default 'and'. + * @return array A list of taxonomy names or objects. */ function get_taxonomies( $args = array(), $output = 'names', $operator = 'and' ) { global $wp_taxonomies; @@ -160,13 +166,14 @@ function get_taxonomies( $args = array(), $output = 'names', $operator = 'and' ) * * @since 2.3.0 * - * @uses $wp_taxonomies + * @global array $wp_taxonomies The registered taxonomies. * - * @param array|string|object $object Name of the type of taxonomy object, or an object (row from posts) - * @param string $output The type of output to return, either taxonomy 'names' or 'objects'. 'names' is the default. + * @param array|string|WP_Post $object Name of the type of taxonomy object, or an object (row from posts) + * @param string $output Optional. The type of output to return in the array. Accepts either + * taxonomy 'names' or 'objects'. Default 'names'. * @return array The names of all taxonomy of $object_type. */ -function get_object_taxonomies($object, $output = 'names') { +function get_object_taxonomies( $object, $output = 'names' ) { global $wp_taxonomies; if ( is_object($object) ) { @@ -198,10 +205,10 @@ function get_object_taxonomies($object, $output = 'names') { * * @since 2.3.0 * - * @uses $wp_taxonomies + * @global array $wp_taxonomies The registered taxonomies. * - * @param string $taxonomy Name of taxonomy object to return - * @return object|bool The Taxonomy Object or false if $taxonomy doesn't exist + * @param string $taxonomy Name of taxonomy object to return. + * @return object|false The Taxonomy Object or false if $taxonomy doesn't exist. */ function get_taxonomy( $taxonomy ) { global $wp_taxonomies; @@ -219,9 +226,9 @@ function get_taxonomy( $taxonomy ) { * * @since 3.0.0 * - * @uses $wp_taxonomies + * @global array $wp_taxonomies The registered taxonomies. * - * @param string $taxonomy Name of taxonomy object + * @param string $taxonomy Name of taxonomy object. * @return bool Whether the taxonomy exists. */ function taxonomy_exists( $taxonomy ) { @@ -240,8 +247,8 @@ function taxonomy_exists( $taxonomy ) { * * @since 2.3.0 * - * @param string $taxonomy Name of taxonomy object - * @return bool Whether the taxonomy is hierarchical + * @param string $taxonomy Name of taxonomy object. + * @return bool Whether the taxonomy is hierarchical. */ function is_taxonomy_hierarchical($taxonomy) { if ( ! taxonomy_exists($taxonomy) ) @@ -252,70 +259,85 @@ function is_taxonomy_hierarchical($taxonomy) { } /** - * Create or modify a taxonomy object. Do not use before init. + * Creates or modifies a taxonomy object. + * + * Note: Do not use before the {@see 'init'} hook. * * A simple function for creating or modifying a taxonomy object based on the * parameters given. The function will accept an array (third optional * parameter), along with strings for the taxonomy name and another string for * the object type. * - * Nothing is returned, so expect error maybe or use taxonomy_exists() to check - * whether taxonomy exists. - * - * Optional $args contents: - * - * - label - Name of the taxonomy shown in the menu. Usually plural. If not set, labels['name'] will be used. - * - labels - An array of labels for this taxonomy. - * * By default tag labels are used for non-hierarchical types and category labels for hierarchical ones. - * * You can see accepted values in {@link get_taxonomy_labels()}. - * - description - A short descriptive summary of what the taxonomy is for. Defaults to blank. - * - public - If the taxonomy should be publicly queryable; //@TODO not implemented. - * * Defaults to true. - * - hierarchical - Whether the taxonomy is hierarchical (e.g. category). Defaults to false. - * - show_ui - Whether to generate a default UI for managing this taxonomy in the admin. - * * If not set, the default is inherited from public. - * - show_in_menu - Whether to show the taxonomy in the admin menu. - * * If true, the taxonomy is shown as a submenu of the object type menu. - * * If false, no menu is shown. - * * show_ui must be true. - * * If not set, the default is inherited from show_ui. - * - show_in_nav_menus - Makes this taxonomy available for selection in navigation menus. - * * If not set, the default is inherited from public. - * - show_tagcloud - Whether to list the taxonomy in the Tag Cloud Widget. - * * If not set, the default is inherited from show_ui. - * - show_admin_column - Whether to display a column for the taxonomy on its post type listing screens. - * * Defaults to false. - * - meta_box_cb - Provide a callback function for the meta box display. - * * If not set, defaults to post_categories_meta_box for hierarchical taxonomies - * and post_tags_meta_box for non-hierarchical. - * * If false, no meta box is shown. - * - capabilities - Array of capabilities for this taxonomy. - * * You can see accepted values in this function. - * - rewrite - Triggers the handling of rewrites for this taxonomy. Defaults to true, using $taxonomy as slug. - * * To prevent rewrite, set to false. - * * To specify rewrite rules, an array can be passed with any of these keys - * * 'slug' => string Customize the permastruct slug. Defaults to $taxonomy key - * * 'with_front' => bool Should the permastruct be prepended with WP_Rewrite::$front. Defaults to true. - * * 'hierarchical' => bool Either hierarchical rewrite tag or not. Defaults to false. - * * 'ep_mask' => const Assign an endpoint mask. - * * If not specified, defaults to EP_NONE. - * - query_var - Sets the query_var key for this taxonomy. Defaults to $taxonomy key - * * If false, a taxonomy cannot be loaded at ?{query_var}={term_slug} - * * If specified as a string, the query ?{query_var_string}={term_slug} will be valid. - * - update_count_callback - Works much like a hook, in that it will be called when the count is updated. - * * Defaults to _update_post_term_count() for taxonomies attached to post types, which then confirms - * that the objects are published before counting them. - * * Defaults to _update_generic_term_count() for taxonomies attached to other object types, such as links. - * - _builtin - true if this taxonomy is a native or "built-in" taxonomy. THIS IS FOR INTERNAL USE ONLY! - * * @since 2.3.0 - * @uses $wp_taxonomies Inserts new taxonomy object into the list - * @uses $wp Adds query vars + * @since 4.2.0 Introduced `show_in_quick_edit` argument. + * @since 4.4.0 The `show_ui` argument is now enforced on the term editing screen. + * @since 4.4.0 The `public` argument now controls whether the taxonomy can be queried on the front-end. * - * @param string $taxonomy Taxonomy key, must not exceed 32 characters. + * @global array $wp_taxonomies Registered taxonomies. + * @global WP $wp WP instance. + * + * @param string $taxonomy Taxonomy key, must not exceed 32 characters. * @param array|string $object_type Name of the object type for the taxonomy object. - * @param array|string $args See optional args description above. - * @return null|WP_Error WP_Error if errors, otherwise null. + * @param array|string $args { + * Optional. Array or query string of arguments for registering a taxonomy. + * + * @type string $label Name of the taxonomy shown in the menu. Usually plural. If not set, + * `$labels['name']` will be used. + * @type array $labels An array of labels for this taxonomy. By default, Tag labels are used for + * non-hierarchical taxonmies, and Category labels are used for hierarchical + * taxonomies. See accepted values in get_taxonomy_labels(). + * Default empty array. + * @type string $description A short descriptive summary of what the taxonomy is for. Default empty. + * @type bool $public Whether the taxonomy is publicly queryable. Default true. + * @type bool $hierarchical Whether the taxonomy is hierarchical. Default false. + * @type bool $show_ui Whether to generate and allow a UI for managing terms in this taxonomy in + * the admin. If not set, the default is inherited from `$public` + * (default true). + * @type bool $show_in_menu Whether to show the taxonomy in the admin menu. If true, the taxonomy is + * shown as a submenu of the object type menu. If false, no menu is shown. + * `$show_ui` must be true. If not set, default is inherited from `$show_ui` + * (default true). + * @type bool $show_in_nav_menus Makes this taxonomy available for selection in navigation menus. If not + * set, the default is inherited from `$public` (default true). + * @type bool $show_tagcloud Whether to list the taxonomy in the Tag Cloud Widget controls. If not set, + * the default is inherited from `$show_ui` (default true). + * @type bool $show_in_quick_edit Whether to show the taxonomy in the quick/bulk edit panel. It not set, + * the default is inherited from `$show_ui` (default true). + * @type bool $show_admin_column Whether to display a column for the taxonomy on its post type listing + * screens. Default false. + * @type bool|callable $meta_box_cb Provide a callback function for the meta box display. If not set, + * post_categories_meta_box() is used for hierarchical taxonomies, and + * post_tags_meta_box() is used for non-hierarchical. If false, no meta + * box is shown. + * @type array $capabilities { + * Array of capabilities for this taxonomy. + * + * @type string $manage_terms Default 'manage_categories'. + * @type string $edit_terms Default 'manage_categories'. + * @type string $delete_terms Default 'manage_categories'. + * @type string $assign_terms Default 'edit_posts'. + * } + * @type bool|array $rewrite { + * Triggers the handling of rewrites for this taxonomy. Default true, using $taxonomy as slug. To prevent + * rewrite, set to false. To specify rewrite rules, an array can be passed with any of these keys: + * + * @type string $slug Customize the permastruct slug. Default `$taxonomy` key. + * @type bool $with_front Should the permastruct be prepended with WP_Rewrite::$front. Default true. + * @type bool $hierarchical Either hierarchical rewrite tag or not. Default false. + * @type int $ep_mask Assign an endpoint mask. Default `EP_NONE`. + * } + * @type string $query_var Sets the query var key for this taxonomy. Default `$taxonomy` key. If + * false, a taxonomy cannot be loaded at `?{query_var}={term_slug}`. If a + * string, the query `?{query_var}={term_slug}` will be valid. + * @type callable $update_count_callback Works much like a hook, in that it will be called when the count is + * updated. Default _update_post_term_count() for taxonomies attached + * to post types, which confirms that the objects are published before + * counting them. Default _update_generic_term_count() for taxonomies + * attached to other object types, such as users. + * @type bool $_builtin This taxonomy is a "built-in" taxonomy. INTERNAL USE ONLY! + * Default false. + * } + * @return WP_Error|void WP_Error, if errors. */ function register_taxonomy( $taxonomy, $object_type, $args = array() ) { global $wp_taxonomies, $wp; @@ -323,6 +345,19 @@ function register_taxonomy( $taxonomy, $object_type, $args = array() ) { if ( ! is_array( $wp_taxonomies ) ) $wp_taxonomies = array(); + $args = wp_parse_args( $args ); + + /** + * Filter the arguments for registering a taxonomy. + * + * @since 4.4.0 + * + * @param array $args Array of arguments for registering a taxonomy. + * @param array $object_type Array of names of object types for the taxonomy. + * @param string $taxonomy Taxonomy key. + */ + $args = apply_filters( 'register_taxonomy_args', $args, $taxonomy, (array) $object_type ); + $defaults = array( 'labels' => array(), 'description' => '', @@ -332,6 +367,7 @@ function register_taxonomy( $taxonomy, $object_type, $args = array() ) { 'show_in_menu' => null, 'show_in_nav_menus' => null, 'show_tagcloud' => null, + 'show_in_quick_edit' => null, 'show_admin_column' => false, 'meta_box_cb' => null, 'capabilities' => array(), @@ -340,19 +376,23 @@ function register_taxonomy( $taxonomy, $object_type, $args = array() ) { 'update_count_callback' => '', '_builtin' => false, ); - $args = wp_parse_args( $args, $defaults ); + $args = array_merge( $defaults, $args ); - if ( strlen( $taxonomy ) > 32 ) { - _doing_it_wrong( __FUNCTION__, __( 'Taxonomies cannot exceed 32 characters in length' ), '4.0' ); - return new WP_Error( 'taxonomy_too_long', __( 'Taxonomies cannot exceed 32 characters in length' ) ); + if ( empty( $taxonomy ) || strlen( $taxonomy ) > 32 ) { + _doing_it_wrong( __FUNCTION__, __( 'Taxonomy names must be between 1 and 32 characters in length.' ), '4.2' ); + return new WP_Error( 'taxonomy_length_invalid', __( 'Taxonomy names must be between 1 and 32 characters in length.' ) ); } - if ( false !== $args['query_var'] && ! empty( $wp ) ) { + // Non-public taxonomies should not register query vars, except in the admin. + if ( false !== $args['query_var'] && ( is_admin() || false !== $args['public'] ) && ! empty( $wp ) ) { if ( true === $args['query_var'] ) $args['query_var'] = $taxonomy; else $args['query_var'] = sanitize_title_with_dashes( $args['query_var'] ); $wp->add_query_var( $args['query_var'] ); + } else { + // Force query_var to false for non-public taxonomies. + $args['query_var'] = false; } if ( false !== $args['rewrite'] && ( is_admin() || '' != get_option( 'permalink_structure' ) ) ) { @@ -390,6 +430,11 @@ function register_taxonomy( $taxonomy, $object_type, $args = array() ) { if ( null === $args['show_tagcloud'] ) $args['show_tagcloud'] = $args['show_ui']; + // If not set, default to the setting for show_ui. + if ( null === $args['show_in_quick_edit'] ) { + $args['show_in_quick_edit'] = $args['show_ui']; + } + $default_caps = array( 'manage_terms' => 'manage_categories', 'edit_terms' => 'manage_categories', @@ -450,15 +495,22 @@ function register_taxonomy( $taxonomy, $object_type, $args = array() ) { * - separate_items_with_commas - This string isn't used on hierarchical taxonomies. Default is "Separate tags with commas", used in the meta box. * - add_or_remove_items - This string isn't used on hierarchical taxonomies. Default is "Add or remove tags", used in the meta box when JavaScript is disabled. * - choose_from_most_used - This string isn't used on hierarchical taxonomies. Default is "Choose from the most used tags", used in the meta box. - * - not_found - This string isn't used on hierarchical taxonomies. Default is "No tags found", used in the meta box. + * - not_found - Default is "No tags found"/"No categories found", used in the meta box and taxonomy list table. + * - no_terms - Default is "No tags"/"No categories", used in the posts and media list tables. + * - items_list_navigation - String for the table pagination hidden heading. + * - items_list - String for the table hidden heading. * * Above, the first default value is for non-hierarchical taxonomies (like tags) and the second one is for hierarchical taxonomies (like categories). * + * @todo Better documentation for the labels array. + * * @since 3.0.0 - * @param object $tax Taxonomy object - * @return object object with all the labels as member variables + * @since 4.3.0 Added the `no_terms` label. + * @since 4.4.0 Added the `items_list_navigation` and `items_list` labels. + * + * @param object $tax Taxonomy object. + * @return object object with all the labels as member variables. */ - function get_taxonomy_labels( $tax ) { $tax->labels = (array) $tax->labels; @@ -484,22 +536,48 @@ function get_taxonomy_labels( $tax ) { 'separate_items_with_commas' => array( __( 'Separate tags with commas' ), null ), 'add_or_remove_items' => array( __( 'Add or remove tags' ), null ), 'choose_from_most_used' => array( __( 'Choose from the most used tags' ), null ), - 'not_found' => array( __( 'No tags found.' ), null ), + 'not_found' => array( __( 'No tags found.' ), __( 'No categories found.' ) ), + 'no_terms' => array( __( 'No tags' ), __( 'No categories' ) ), + 'items_list_navigation' => array( __( 'Tags list navigation' ), __( 'Categories list navigation' ) ), + 'items_list' => array( __( 'Tags list' ), __( 'Categories list' ) ), ); $nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name']; - return _get_custom_object_labels( $tax, $nohier_vs_hier_defaults ); + $labels = _get_custom_object_labels( $tax, $nohier_vs_hier_defaults ); + + $taxonomy = $tax->name; + + $default_labels = clone $labels; + + /** + * Filter the labels of a specific taxonomy. + * + * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. + * + * @since 4.4.0 + * + * @see get_taxonomy_labels() for the full list of taxonomy labels. + * + * @param object $labels Object with labels for the taxonomy as member variables. + */ + $labels = apply_filters( "taxonomy_labels_{$taxonomy}", $labels ); + + // Ensure that the filtered labels contain all required default values. + $labels = (object) array_merge( (array) $default_labels, (array) $labels ); + + return $labels; } /** * Add an already registered taxonomy to an object type. * * @since 3.0.0 - * @uses $wp_taxonomies Modifies taxonomy object * - * @param string $taxonomy Name of taxonomy object - * @param string $object_type Name of the object type - * @return bool True if successful, false if not + * @global array $wp_taxonomies The registered taxonomies. + * + * @param string $taxonomy Name of taxonomy object. + * @param string $object_type Name of the object type. + * @return bool True if successful, false if not. */ function register_taxonomy_for_object_type( $taxonomy, $object_type) { global $wp_taxonomies; @@ -513,6 +591,9 @@ function register_taxonomy_for_object_type( $taxonomy, $object_type) { if ( ! in_array( $object_type, $wp_taxonomies[$taxonomy]->object_type ) ) $wp_taxonomies[$taxonomy]->object_type[] = $object_type; + // Filter out empties. + $wp_taxonomies[ $taxonomy ]->object_type = array_filter( $wp_taxonomies[ $taxonomy ]->object_type ); + return true; } @@ -521,6 +602,8 @@ function register_taxonomy_for_object_type( $taxonomy, $object_type) { * * @since 3.7.0 * + * @global array $wp_taxonomies The registered taxonomies. + * * @param string $taxonomy Name of taxonomy object. * @param string $object_type Name of the object type. * @return bool True if successful, false if not. @@ -565,10 +648,10 @@ function unregister_taxonomy_for_object_type( $taxonomy, $object_type ) { * * @global wpdb $wpdb WordPress database abstraction object. * - * @param int|array $term_ids Term id or array of term ids of terms that will be used - * @param string|array $taxonomies String of taxonomy name or Array of string values of taxonomy names - * @param array|string $args Change the order of the object_ids, either ASC or DESC - * @return WP_Error|array If the taxonomy does not exist, then WP_Error will be returned. On success + * @param int|array $term_ids Term id or array of term ids of terms that will be used. + * @param string|array $taxonomies String of taxonomy name or Array of string values of taxonomy names. + * @param array|string $args Change the order of the object_ids, either ASC or DESC. + * @return WP_Error|array If the taxonomy does not exist, then WP_Error will be returned. On success. * the array can be empty meaning that there are no $object_ids found or it will return the $object_ids found. */ function get_objects_in_term( $term_ids, $taxonomies, $args = array() ) { @@ -611,648 +694,14 @@ function get_objects_in_term( $term_ids, $taxonomies, $args = array() ) { * * @see WP_Tax_Query * - * @param array $tax_query A compact tax query + * @param array $tax_query A compact tax query * @param string $primary_table - * @param string $primary_id_column - * @return array - */ -function get_tax_sql( $tax_query, $primary_table, $primary_id_column ) { - $tax_query_obj = new WP_Tax_Query( $tax_query ); - return $tax_query_obj->get_sql( $primary_table, $primary_id_column ); -} - -/** - * Class for generating SQL clauses that filter a primary query according to object taxonomy terms. - * - * `WP_Tax_Query` is a helper that allows primary query classes, such as {@see WP_Query}, to filter - * their results by object metadata, by generating `JOIN` and `WHERE` subclauses to be attached - * to the primary SQL query string. - * - * @since 3.1.0 - */ -class WP_Tax_Query { - - /** - * Array of taxonomy queries. - * - * See {@see WP_Tax_Query::__construct()} for information on tax query arguments. - * - * @since 3.1.0 - * @access public - * @var array - */ - public $queries = array(); - - /** - * The relation between the queries. Can be one of 'AND' or 'OR'. - * - * @since 3.1.0 - * @access public - * @var string - */ - public $relation; - - /** - * Standard response when the query should not return any rows. - * - * @since 3.2.0 - * @access private - * @var string - */ - private static $no_results = array( 'join' => array( '' ), 'where' => array( '0 = 1' ) ); - - /** - * A flat list of table aliases used in the JOIN clauses. - * - * @since 4.1.0 - * @access protected - * @var array - */ - protected $table_aliases = array(); - - /** - * Terms and taxonomies fetched by this query. - * - * We store this data in a flat array because they are referenced in a - * number of places by {@see WP_Query}. - * - * @since 4.1.0 - * @access public - * @var array - */ - public $queried_terms = array(); - - /** - * Database table that where the metadata's objects are stored (eg $wpdb->users). - * - * @since 4.1.0 - * @access public - * @var string - */ - public $primary_table; - - /** - * Column in 'primary_table' that represents the ID of the object. - * - * @since 4.1.0 - * @access public - * @var string - */ - public $primary_id_column; - - /** - * Constructor. - * - * @since 3.1.0 - * @since 4.1.0 Added support for `$operator` 'NOT EXISTS' and 'EXISTS' values. - * @access public - * - * @param array $tax_query { - * Array of taxonomy query clauses. - * - * @type string $relation Optional. The MySQL keyword used to join - * the clauses of the query. Accepts 'AND', or 'OR'. Default 'AND'. - * @type array { - * Optional. An array of first-order clause parameters, or another fully-formed tax query. - * - * @type string $taxonomy Taxonomy being queried. Optional when field=term_taxonomy_id. - * @type string|int|array $terms Term or terms to filter by. - * @type string $field Field to match $terms against. Accepts 'term_id', 'slug', - * 'name', or 'term_taxonomy_id'. Default: 'term_id'. - * @type string $operator MySQL operator to be used with $terms in the WHERE clause. - * Accepts 'AND', 'IN', 'NOT IN', 'EXISTS', 'NOT EXISTS'. - * Default: 'IN'. - * @type bool $include_children Optional. Whether to include child terms. - * Requires a $taxonomy. Default: true. - * } - * } - */ - public function __construct( $tax_query ) { - if ( isset( $tax_query['relation'] ) ) { - $this->relation = $this->sanitize_relation( $tax_query['relation'] ); - } else { - $this->relation = 'AND'; - } - - $this->queries = $this->sanitize_query( $tax_query ); - } - - /** - * Ensure the 'tax_query' argument passed to the class constructor is well-formed. - * - * Ensures that each query-level clause has a 'relation' key, and that - * each first-order clause contains all the necessary keys from `$defaults`. - * - * @since 4.1.0 - * @access public - * - * @param array $queries Array of queries clauses. - * @return array Sanitized array of query clauses. - */ - public function sanitize_query( $queries ) { - $cleaned_query = array(); - - $defaults = array( - 'taxonomy' => '', - 'terms' => array(), - 'field' => 'term_id', - 'operator' => 'IN', - 'include_children' => true, - ); - - foreach ( $queries as $key => $query ) { - if ( 'relation' === $key ) { - $cleaned_query['relation'] = $this->sanitize_relation( $query ); - - // First-order clause. - } else if ( self::is_first_order_clause( $query ) ) { - - $cleaned_clause = array_merge( $defaults, $query ); - $cleaned_clause['terms'] = (array) $cleaned_clause['terms']; - $cleaned_query[] = $cleaned_clause; - - /* - * Keep a copy of the clause in the flate - * $queried_terms array, for use in WP_Query. - */ - if ( ! empty( $cleaned_clause['taxonomy'] ) && 'NOT IN' !== $cleaned_clause['operator'] ) { - $taxonomy = $cleaned_clause['taxonomy']; - if ( ! isset( $this->queried_terms[ $taxonomy ] ) ) { - $this->queried_terms[ $taxonomy ] = array(); - } - - /* - * Backward compatibility: Only store the first - * 'terms' and 'field' found for a given taxonomy. - */ - if ( ! empty( $cleaned_clause['terms'] ) && ! isset( $this->queried_terms[ $taxonomy ]['terms'] ) ) { - $this->queried_terms[ $taxonomy ]['terms'] = $cleaned_clause['terms']; - } - - if ( ! empty( $cleaned_clause['field'] ) && ! isset( $this->queried_terms[ $taxonomy ]['field'] ) ) { - $this->queried_terms[ $taxonomy ]['field'] = $cleaned_clause['field']; - } - } - - // Otherwise, it's a nested query, so we recurse. - } else if ( is_array( $query ) ) { - $cleaned_subquery = $this->sanitize_query( $query ); - - if ( ! empty( $cleaned_subquery ) ) { - // All queries with children must have a relation. - if ( ! isset( $cleaned_subquery['relation'] ) ) { - $cleaned_subquery['relation'] = 'AND'; - } - - $cleaned_query[] = $cleaned_subquery; - } - } - } - - return $cleaned_query; - } - - /** - * Sanitize a 'relation' operator. - * - * @since 4.1.0 - * @access public - * - * @param string $relation Raw relation key from the query argument. - * @return string Sanitized relation ('AND' or 'OR'). - */ - public function sanitize_relation( $relation ) { - if ( 'OR' === strtoupper( $relation ) ) { - return 'OR'; - } else { - return 'AND'; - } - } - - /** - * Determine whether a clause is first-order. - * - * A "first-order" clause is one that contains any of the first-order - * clause keys ('terms', 'taxonomy', 'include_children', 'field', - * 'operator'). An empty clause also counts as a first-order clause, - * for backward compatibility. Any clause that doesn't meet this is - * determined, by process of elimination, to be a higher-order query. - * - * @since 4.1.0 - * @access protected - * - * @param array $query Tax query arguments. - * @return bool Whether the query clause is a first-order clause. - */ - protected static function is_first_order_clause( $query ) { - return is_array( $query ) && ( empty( $query ) || array_key_exists( 'terms', $query ) || array_key_exists( 'taxonomy', $query ) || array_key_exists( 'include_children', $query ) || array_key_exists( 'field', $query ) || array_key_exists( 'operator', $query ) ); - } - - /** - * Generates SQL clauses to be appended to a main query. - * - * @since 3.1.0 - * @access public - * - * @param string $primary_table Database table where the object being filtered is stored (eg wp_users). - * @param string $primary_id_column ID column for the filtered object in $primary_table. - * @return array { - * Array containing JOIN and WHERE SQL clauses to append to the main query. - * - * @type string $join SQL fragment to append to the main JOIN clause. - * @type string $where SQL fragment to append to the main WHERE clause. - * } - */ - public function get_sql( $primary_table, $primary_id_column ) { - $this->primary_table = $primary_table; - $this->primary_id_column = $primary_id_column; - - return $this->get_sql_clauses(); - } - - /** - * Generate SQL clauses to be appended to a main query. - * - * Called by the public {@see WP_Tax_Query::get_sql()}, this method - * is abstracted out to maintain parity with the other Query classes. - * - * @since 4.1.0 - * @access protected - * - * @return array { - * Array containing JOIN and WHERE SQL clauses to append to the main query. - * - * @type string $join SQL fragment to append to the main JOIN clause. - * @type string $where SQL fragment to append to the main WHERE clause. - * } - */ - protected function get_sql_clauses() { - /* - * $queries are passed by reference to get_sql_for_query() for recursion. - * To keep $this->queries unaltered, pass a copy. - */ - $queries = $this->queries; - $sql = $this->get_sql_for_query( $queries ); - - if ( ! empty( $sql['where'] ) ) { - $sql['where'] = ' AND ' . $sql['where']; - } - - return $sql; - } - - /** - * Generate SQL clauses for a single query array. - * - * If nested subqueries are found, this method recurses the tree to - * produce the properly nested SQL. - * - * @since 4.1.0 - * @access protected - * - * @param array $query Query to parse, passed by reference. - * @param int $depth Optional. Number of tree levels deep we currently are. - * Used to calculate indentation. Default 0. - * @return array { - * Array containing JOIN and WHERE SQL clauses to append to a single query array. - * - * @type string $join SQL fragment to append to the main JOIN clause. - * @type string $where SQL fragment to append to the main WHERE clause. - * } - */ - protected function get_sql_for_query( &$query, $depth = 0 ) { - $sql_chunks = array( - 'join' => array(), - 'where' => array(), - ); - - $sql = array( - 'join' => '', - 'where' => '', - ); - - $indent = ''; - for ( $i = 0; $i < $depth; $i++ ) { - $indent .= " "; - } - - foreach ( $query as $key => &$clause ) { - if ( 'relation' === $key ) { - $relation = $query['relation']; - } else if ( is_array( $clause ) ) { - - // This is a first-order clause. - if ( $this->is_first_order_clause( $clause ) ) { - $clause_sql = $this->get_sql_for_clause( $clause, $query ); - - $where_count = count( $clause_sql['where'] ); - if ( ! $where_count ) { - $sql_chunks['where'][] = ''; - } else if ( 1 === $where_count ) { - $sql_chunks['where'][] = $clause_sql['where'][0]; - } else { - $sql_chunks['where'][] = '( ' . implode( ' AND ', $clause_sql['where'] ) . ' )'; - } - - $sql_chunks['join'] = array_merge( $sql_chunks['join'], $clause_sql['join'] ); - // This is a subquery, so we recurse. - } else { - $clause_sql = $this->get_sql_for_query( $clause, $depth + 1 ); - - $sql_chunks['where'][] = $clause_sql['where']; - $sql_chunks['join'][] = $clause_sql['join']; - } - } - } - - // Filter to remove empties. - $sql_chunks['join'] = array_filter( $sql_chunks['join'] ); - $sql_chunks['where'] = array_filter( $sql_chunks['where'] ); - - if ( empty( $relation ) ) { - $relation = 'AND'; - } - - // Filter duplicate JOIN clauses and combine into a single string. - if ( ! empty( $sql_chunks['join'] ) ) { - $sql['join'] = implode( ' ', array_unique( $sql_chunks['join'] ) ); - } - - // Generate a single WHERE clause with proper brackets and indentation. - if ( ! empty( $sql_chunks['where'] ) ) { - $sql['where'] = '( ' . "\n " . $indent . implode( ' ' . "\n " . $indent . $relation . ' ' . "\n " . $indent, $sql_chunks['where'] ) . "\n" . $indent . ')'; - } - - return $sql; - } - - /** - * Generate SQL JOIN and WHERE clauses for a "first-order" query clause. - * - * @since 4.1.0 - * @access public - * - * @param array $clause Query clause, passed by reference - * @param array $parent_query Parent query array. - * @return array { - * Array containing JOIN and WHERE SQL clauses to append to a first-order query. - * - * @type string $join SQL fragment to append to the main JOIN clause. - * @type string $where SQL fragment to append to the main WHERE clause. - * } - */ - public function get_sql_for_clause( &$clause, $parent_query ) { - global $wpdb; - - $sql = array( - 'where' => array(), - 'join' => array(), - ); - - $join = ''; - - $this->clean_query( $clause ); - - if ( is_wp_error( $clause ) ) { - return self::$no_results; - } - - $terms = $clause['terms']; - $operator = strtoupper( $clause['operator'] ); - - if ( 'IN' == $operator ) { - - if ( empty( $terms ) ) { - return self::$no_results; - } - - $terms = implode( ',', $terms ); - - /* - * Before creating another table join, see if this clause has a - * sibling with an existing join that can be shared. - */ - $alias = $this->find_compatible_table_alias( $clause, $parent_query ); - if ( false === $alias ) { - $i = count( $this->table_aliases ); - $alias = $i ? 'tt' . $i : $wpdb->term_relationships; - - // Store the alias as part of a flat array to build future iterators. - $this->table_aliases[] = $alias; - - // Store the alias with this clause, so later siblings can use it. - $clause['alias'] = $alias; - - $join .= " INNER JOIN $wpdb->term_relationships"; - $join .= $i ? " AS $alias" : ''; - $join .= " ON ($this->primary_table.$this->primary_id_column = $alias.object_id)"; - } - - - $where = "$alias.term_taxonomy_id $operator ($terms)"; - - } elseif ( 'NOT IN' == $operator ) { - - if ( empty( $terms ) ) { - return $sql; - } - - $terms = implode( ',', $terms ); - - $where = "$this->primary_table.$this->primary_id_column NOT IN ( - SELECT object_id - FROM $wpdb->term_relationships - WHERE term_taxonomy_id IN ($terms) - )"; - - } elseif ( 'AND' == $operator ) { - - if ( empty( $terms ) ) { - return $sql; - } - - $num_terms = count( $terms ); - - $terms = implode( ',', $terms ); - - $where = "( - SELECT COUNT(1) - FROM $wpdb->term_relationships - WHERE term_taxonomy_id IN ($terms) - AND object_id = $this->primary_table.$this->primary_id_column - ) = $num_terms"; - - } elseif ( 'NOT EXISTS' === $operator || 'EXISTS' === $operator ) { - - $where = $wpdb->prepare( "$operator ( - SELECT 1 - FROM $wpdb->term_relationships - INNER JOIN $wpdb->term_taxonomy - ON $wpdb->term_taxonomy.term_taxonomy_id = $wpdb->term_relationships.term_taxonomy_id - WHERE $wpdb->term_taxonomy.taxonomy = %s - AND $wpdb->term_relationships.object_id = $this->primary_table.$this->primary_id_column - )", $clause['taxonomy'] ); - - } - - $sql['join'][] = $join; - $sql['where'][] = $where; - return $sql; - } - - /** - * Identify an existing table alias that is compatible with the current query clause. - * - * We avoid unnecessary table joins by allowing each clause to look for - * an existing table alias that is compatible with the query that it - * needs to perform. - * - * An existing alias is compatible if (a) it is a sibling of `$clause` - * (ie, it's under the scope of the same relation), and (b) the combination - * of operator and relation between the clauses allows for a shared table - * join. In the case of {@see WP_Tax_Query}, this only applies to 'IN' - * clauses that are connected by the relation 'OR'. - * - * @since 4.1.0 - * @access protected - * - * @param array $clause Query clause. - * @param array $parent_query Parent query of $clause. - * @return string|bool Table alias if found, otherwise false. - */ - protected function find_compatible_table_alias( $clause, $parent_query ) { - $alias = false; - - // Sanity check. Only IN queries use the JOIN syntax . - if ( ! isset( $clause['operator'] ) || 'IN' !== $clause['operator'] ) { - return $alias; - } - - // Since we're only checking IN queries, we're only concerned with OR relations. - if ( ! isset( $parent_query['relation'] ) || 'OR' !== $parent_query['relation'] ) { - return $alias; - } - - $compatible_operators = array( 'IN' ); - - foreach ( $parent_query as $sibling ) { - if ( ! is_array( $sibling ) || ! $this->is_first_order_clause( $sibling ) ) { - continue; - } - - if ( empty( $sibling['alias'] ) || empty( $sibling['operator'] ) ) { - continue; - } - - // The sibling must both have compatible operator to share its alias. - if ( in_array( strtoupper( $sibling['operator'] ), $compatible_operators ) ) { - $alias = $sibling['alias']; - break; - } - } - - return $alias; - } - - /** - * Validates a single query. - * - * @since 3.2.0 - * @access private - * - * @param array &$query The single query. - */ - private function clean_query( &$query ) { - if ( empty( $query['taxonomy'] ) ) { - if ( 'term_taxonomy_id' !== $query['field'] ) { - $query = new WP_Error( 'Invalid taxonomy' ); - return; - } - - // so long as there are shared terms, include_children requires that a taxonomy is set - $query['include_children'] = false; - } elseif ( ! taxonomy_exists( $query['taxonomy'] ) ) { - $query = new WP_Error( 'Invalid taxonomy' ); - return; - } - - $query['terms'] = array_unique( (array) $query['terms'] ); - - if ( is_taxonomy_hierarchical( $query['taxonomy'] ) && $query['include_children'] ) { - $this->transform_query( $query, 'term_id' ); - - if ( is_wp_error( $query ) ) - return; - - $children = array(); - foreach ( $query['terms'] as $term ) { - $children = array_merge( $children, get_term_children( $term, $query['taxonomy'] ) ); - $children[] = $term; - } - $query['terms'] = $children; - } - - $this->transform_query( $query, 'term_taxonomy_id' ); - } - - /** - * Transforms a single query, from one field to another. - * - * @since 3.2.0 - * - * @param array &$query The single query. - * @param string $resulting_field The resulting field. Accepts 'slug', 'name', 'term_taxonomy_id', - * or 'term_id'. Default: 'term_id'. - */ - public function transform_query( &$query, $resulting_field ) { - global $wpdb; - - if ( empty( $query['terms'] ) ) - return; - - if ( $query['field'] == $resulting_field ) - return; - - $resulting_field = sanitize_key( $resulting_field ); - - switch ( $query['field'] ) { - case 'slug': - case 'name': - $terms = "'" . implode( "','", array_map( 'sanitize_title_for_query', $query['terms'] ) ) . "'"; - $terms = $wpdb->get_col( " - SELECT $wpdb->term_taxonomy.$resulting_field - FROM $wpdb->term_taxonomy - INNER JOIN $wpdb->terms USING (term_id) - WHERE taxonomy = '{$query['taxonomy']}' - AND $wpdb->terms.{$query['field']} IN ($terms) - " ); - break; - case 'term_taxonomy_id': - $terms = implode( ',', array_map( 'intval', $query['terms'] ) ); - $terms = $wpdb->get_col( " - SELECT $resulting_field - FROM $wpdb->term_taxonomy - WHERE term_taxonomy_id IN ($terms) - " ); - break; - default: - $terms = implode( ',', array_map( 'intval', $query['terms'] ) ); - $terms = $wpdb->get_col( " - SELECT $resulting_field - FROM $wpdb->term_taxonomy - WHERE taxonomy = '{$query['taxonomy']}' - AND term_id IN ($terms) - " ); - } - - if ( 'AND' == $query['operator'] && count( $terms ) < count( $query['terms'] ) ) { - $query = new WP_Error( 'Inexistent terms' ); - return; - } - - $query['terms'] = $terms; - $query['field'] = $resulting_field; - } + * @param string $primary_id_column + * @return array + */ +function get_tax_sql( $tax_query, $primary_table, $primary_id_column ) { + $tax_query_obj = new WP_Tax_Query( $tax_query ); + return $tax_query_obj->get_sql( $primary_table, $primary_id_column ); } /** @@ -1271,63 +720,70 @@ class WP_Tax_Query { * term object, and the taxonomy name as parameters. Both hooks are expected to * return a Term object. * - * 'get_term' hook - Takes two parameters the term Object and the taxonomy name. + * {@see 'get_term'} hook - Takes two parameters the term Object and the taxonomy name. * Must return term object. Used in get_term() as a catch-all filter for every * $term. * - * 'get_$taxonomy' hook - Takes two parameters the term Object and the taxonomy + * {@see 'get_$taxonomy'} hook - Takes two parameters the term Object and the taxonomy * name. Must return term object. $taxonomy will be the taxonomy name, so for * example, if 'category', it would be 'get_category' as the filter name. Useful * for custom taxonomies or plugging into default taxonomies. * + * @todo Better formatting for DocBlock + * * @since 2.3.0 + * @since 4.4.0 Converted to return a WP_Term object if `$output` is `OBJECT`. + * The `$taxonomy` parameter was made optional. * * @global wpdb $wpdb WordPress database abstraction object. * @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param. * - * @param int|object $term If integer, will get from database. If object will apply filters and return $term. - * @param string $taxonomy Taxonomy name that $term is part of. - * @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N - * @param string $filter Optional, default is raw or no WordPress defined filter will applied. - * @return mixed|null|WP_Error Term Row from database. Will return null if $term is empty. If taxonomy does not - * exist then WP_Error will be returned. + * @param int|WP_Term|object $term If integer, term data will be fetched from the database, or from the cache if + * available. If stdClass object (as in the results of a database query), will apply + * filters and return a `WP_Term` object corresponding to the `$term` data. If `WP_Term`, + * will return `$term`. + * @param string $taxonomy Optional. Taxonomy name that $term is part of. + * @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N + * @param string $filter Optional, default is raw or no WordPress defined filter will applied. + * @return mixed Type corresponding to `$output` on success or null on failure. When `$output` is `OBJECT`, + * a WP_Term instance is returned. If taxonomy does not exist then WP_Error will be returned. */ -function get_term($term, $taxonomy, $output = OBJECT, $filter = 'raw') { - global $wpdb; - - if ( empty($term) ) { - $error = new WP_Error('invalid_term', __('Empty Term')); - return $error; +function get_term( $term, $taxonomy = '', $output = OBJECT, $filter = 'raw' ) { + if ( empty( $term ) ) { + return new WP_Error( 'invalid_term', __( 'Empty Term' ) ); } - if ( ! taxonomy_exists($taxonomy) ) { - $error = new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); - return $error; + if ( $taxonomy && ! taxonomy_exists( $taxonomy ) ) { + return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy' ) ); } - if ( is_object($term) && empty($term->filter) ) { - wp_cache_add( $term->term_id, $term, $taxonomy ); + if ( $term instanceof WP_Term ) { $_term = $term; - } else { - if ( is_object($term) ) - $term = $term->term_id; - if ( !$term = (int) $term ) - return null; - if ( ! $_term = wp_cache_get( $term, $taxonomy ) ) { - $_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = %s AND t.term_id = %d LIMIT 1", $taxonomy, $term) ); - if ( ! $_term ) - return null; - wp_cache_add( $term, $_term, $taxonomy ); + } elseif ( is_object( $term ) ) { + if ( empty( $term->filter ) || 'raw' === $term->filter ) { + $_term = sanitize_term( $term, $taxonomy, 'raw' ); + $_term = new WP_Term( $_term ); + } else { + $_term = WP_Term::get_instance( $term->term_id ); } + } else { + $_term = WP_Term::get_instance( $term, $taxonomy ); + } + + if ( is_wp_error( $_term ) ) { + return $_term; + } elseif ( ! $_term ) { + return null; } /** * Filter a term. * * @since 2.3.0 + * @since 4.4.0 `$_term` can now also be a WP_Term object. * - * @param int|object $_term Term object or ID. - * @param string $taxonomy The taxonomy slug. + * @param int|WP_Term $_term Term object or ID. + * @param string $taxonomy The taxonomy slug. */ $_term = apply_filters( 'get_term', $_term, $taxonomy ); @@ -1338,24 +794,23 @@ function get_term($term, $taxonomy, $output = OBJECT, $filter = 'raw') { * to the taxonomy slug. * * @since 2.3.0 + * @since 4.4.0 `$_term` can now also be a WP_Term object. * - * @param int|object $_term Term object or ID. - * @param string $taxonomy The taxonomy slug. + * @param int|WP_Term $_term Term object or ID. + * @param string $taxonomy The taxonomy slug. */ $_term = apply_filters( "get_$taxonomy", $_term, $taxonomy ); - $_term = sanitize_term($_term, $taxonomy, $filter); - if ( $output == OBJECT ) { - return $_term; - } elseif ( $output == ARRAY_A ) { - $__term = get_object_vars($_term); - return $__term; + // Sanitize term, according to the specified filter. + $_term->filter( $filter ); + + if ( $output == ARRAY_A ) { + return $_term->to_array(); } elseif ( $output == ARRAY_N ) { - $__term = array_values(get_object_vars($_term)); - return $__term; - } else { - return $_term; + return array_values( $_term->to_array() ); } + + return $_term; } /** @@ -1370,66 +825,68 @@ function get_term($term, $taxonomy, $output = OBJECT, $filter = 'raw') { * If $value does not exist, the return value will be false. If $taxonomy exists * and $field and $value combinations exist, the Term will be returned. * + * @todo Better formatting for DocBlock. + * * @since 2.3.0 + * @since 4.4.0 `$taxonomy` is optional if `$field` is 'term_taxonomy_id'. Converted to return + * a WP_Term object if `$output` is `OBJECT`. * * @global wpdb $wpdb WordPress database abstraction object. * @see sanitize_term_field() The $context param lists the available values for get_term_by() $filter param. * - * @param string $field Either 'slug', 'name', 'id' (term_id), or 'term_taxonomy_id' - * @param string|int $value Search for this term value - * @param string $taxonomy Taxonomy Name - * @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N - * @param string $filter Optional, default is raw or no WordPress defined filter will applied. - * @return mixed Term Row from database. Will return false if $taxonomy does not exist or $term was not found. + * @param string $field Either 'slug', 'name', 'id' (term_id), or 'term_taxonomy_id' + * @param string|int $value Search for this term value + * @param string $taxonomy Taxonomy name. Optional, if `$field` is 'term_taxonomy_id'. + * @param string $output Constant OBJECT, ARRAY_A, or ARRAY_N + * @param string $filter Optional, default is raw or no WordPress defined filter will applied. + * @return WP_Term|bool WP_Term instance on success. Will return false if `$taxonomy` does not exist + * or `$term` was not found. */ -function get_term_by($field, $value, $taxonomy, $output = OBJECT, $filter = 'raw') { +function get_term_by( $field, $value, $taxonomy = '', $output = OBJECT, $filter = 'raw' ) { global $wpdb; - if ( ! taxonomy_exists($taxonomy) ) + // 'term_taxonomy_id' lookups don't require taxonomy checks. + if ( 'term_taxonomy_id' !== $field && ! taxonomy_exists( $taxonomy ) ) { return false; + } + + $tax_clause = $wpdb->prepare( "AND tt.taxonomy = %s", $taxonomy ); if ( 'slug' == $field ) { - $field = 't.slug'; + $_field = 't.slug'; $value = sanitize_title($value); if ( empty($value) ) return false; - } else if ( 'name' == $field ) { + } elseif ( 'name' == $field ) { // Assume already escaped $value = wp_unslash($value); - $field = 't.name'; - } else if ( 'term_taxonomy_id' == $field ) { + $_field = 't.name'; + } elseif ( 'term_taxonomy_id' == $field ) { $value = (int) $value; - $field = 'tt.term_taxonomy_id'; + $_field = 'tt.term_taxonomy_id'; + + // No `taxonomy` clause when searching by 'term_taxonomy_id'. + $tax_clause = ''; } else { $term = get_term( (int) $value, $taxonomy, $output, $filter ); - if ( is_wp_error( $term ) ) + if ( is_wp_error( $term ) || is_null( $term ) ) { $term = false; + } return $term; } - $term = $wpdb->get_row( $wpdb->prepare( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE tt.taxonomy = %s AND $field = %s LIMIT 1", $taxonomy, $value ) ); + $term = $wpdb->get_row( $wpdb->prepare( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE $_field = %s $tax_clause LIMIT 1", $value ) ); if ( ! $term ) return false; - wp_cache_add( $term->term_id, $term, $taxonomy ); - - /** This filter is documented in wp-includes/taxonomy.php */ - $term = apply_filters( 'get_term', $term, $taxonomy ); - - /** This filter is documented in wp-includes/taxonomy.php */ - $term = apply_filters( "get_$taxonomy", $term, $taxonomy ); + // In the case of 'term_taxonomy_id', override the provided `$taxonomy` with whatever we find in the db. + if ( 'term_taxonomy_id' === $field ) { + $taxonomy = $term->taxonomy; + } - $term = sanitize_term($term, $taxonomy, $filter); + wp_cache_add( $term->term_id, $term, 'terms' ); - if ( $output == OBJECT ) { - return $term; - } elseif ( $output == ARRAY_A ) { - return get_object_vars($term); - } elseif ( $output == ARRAY_N ) { - return array_values(get_object_vars($term)); - } else { - return $term; - } + return get_term( $term, $taxonomy, $output, $filter ); } /** @@ -1442,11 +899,9 @@ function get_term_by($field, $value, $taxonomy, $output = OBJECT, $filter = 'raw * * @since 2.3.0 * - * @global wpdb $wpdb WordPress database abstraction object. - * - * @param string $term_id ID of Term to get children - * @param string $taxonomy Taxonomy Name - * @return array|WP_Error List of Term IDs. WP_Error returned if $taxonomy does not exist + * @param string $term_id ID of Term to get children. + * @param string $taxonomy Taxonomy Name. + * @return array|WP_Error List of Term IDs. WP_Error returned if `$taxonomy` does not exist. */ function get_term_children( $term_id, $taxonomy ) { if ( ! taxonomy_exists($taxonomy) ) @@ -1476,20 +931,20 @@ function get_term_children( $term_id, $taxonomy ) { /** * Get sanitized Term field. * - * Does checks for $term, based on the $taxonomy. The function is for contextual - * reasons and for simplicity of usage. See sanitize_term_field() for more - * information. + * The function is for contextual reasons and for simplicity of usage. * * @since 2.3.0 + * @since 4.4.0 The `$taxonomy` parameter was made optional. `$term` can also now accept a WP_Term object. + * + * @see sanitize_term_field() * - * @param string $field Term field to fetch - * @param int $term Term ID - * @param string $taxonomy Taxonomy Name - * @param string $context Optional, default is display. Look at sanitize_term_field() for available options. - * @return mixed Will return an empty string if $term is not an object or if $field is not set in $term. + * @param string $field Term field to fetch. + * @param int|WP_Term $term Term ID or object. + * @param string $taxonomy Optional. Taxonomy Name. Default empty. + * @param string $context Optional, default is display. Look at sanitize_term_field() for available options. + * @return string|int|null|WP_Error Will return an empty string if $term is not an object or if $field is not set in $term. */ -function get_term_field( $field, $term, $taxonomy, $context = 'display' ) { - $term = (int) $term; +function get_term_field( $field, $term, $taxonomy = '', $context = 'display' ) { $term = get_term( $term, $taxonomy ); if ( is_wp_error($term) ) return $term; @@ -1500,7 +955,7 @@ function get_term_field( $field, $term, $taxonomy, $context = 'display' ) { if ( !isset($term->$field) ) return ''; - return sanitize_term_field($field, $term->$field, $term->term_id, $taxonomy, $context); + return sanitize_term_field( $field, $term->$field, $term->term_id, $term->taxonomy, $context ); } /** @@ -1511,9 +966,9 @@ function get_term_field( $field, $term, $taxonomy, $context = 'display' ) { * * @since 2.3.0 * - * @param int|object $id Term ID or Object - * @param string $taxonomy Taxonomy Name - * @return mixed|null|WP_Error Will return empty string if $term is not an object. + * @param int|object $id Term ID or object. + * @param string $taxonomy Taxonomy name. + * @return string|int|null|WP_Error Will return empty string if $term is not an object. */ function get_term_to_edit( $id, $taxonomy ) { $term = get_term( $id, $taxonomy ); @@ -1533,72 +988,84 @@ function get_term_to_edit( $id, $taxonomy ) { * You can fully inject any customizations to the query before it is sent, as * well as control the output with a filter. * - * The 'get_terms' filter will be called when the cache has the term and will + * The {@see 'get_terms'} filter will be called when the cache has the term and will * pass the found term along with the array of $taxonomies and array of $args. * This filter is also called before the array of terms is passed and will pass * the array of terms, along with the $taxonomies and $args. * - * The 'list_terms_exclusions' filter passes the compiled exclusions along with + * The {@see 'list_terms_exclusions'} filter passes the compiled exclusions along with * the $args. * - * The 'get_terms_orderby' filter passes the ORDER BY clause for the query - * along with the $args array. - * - * The 'get_terms_fields' filter passes the fields for the SELECT query + * The {@see 'get_terms_orderby'} filter passes the `ORDER BY` clause for the query * along with the $args array. * * @since 2.3.0 + * @since 4.2.0 Introduced 'name' and 'childless' parameters. + * @since 4.4.0 Introduced the ability to pass 'term_id' as an alias of 'id' for the `orderby` parameter. + * Introduced the 'meta_query' and 'update_term_meta_cache' parameters. Converted to return + * a list of WP_Term objects. * - * @global wpdb $wpdb WordPress database abstraction object. + * @global wpdb $wpdb WordPress database abstraction object. + * @global array $wp_filter * * @param string|array $taxonomies Taxonomy name or list of Taxonomy names. * @param array|string $args { * Optional. Array or string of arguments to get terms. * - * @type string $orderby Field(s) to order terms by. Accepts term fields ('name', 'slug', - * 'term_group', 'term_id', 'id'), 'count' for term taxonomy count, - * 'include' to match the 'order' of the $include param, or 'none' - * to skip ORDER BY. Defaults to 'name'. - * @type string $order Whether to order terms in ascending or descending order. - * Accepts 'ASC' (ascending) or 'DESC' (descending). - * Default 'ASC'. - * @type bool|int $hide_empty Whether to hide terms not assigned to any posts. Accepts - * 1|true or 0|false. Default 1|true. - * @type array|string $include Array or comma/space-separated string of term ids to include. - * Default empty array. - * @type array|string $exclude Array or comma/space-separated string of term ids to exclude. - * If $include is non-empty, $exclude is ignored. - * Default empty array. - * @type array|string $exclude_tree Array or comma/space-separated string of term ids to exclude - * along with all of their descendant terms. If $include is - * non-empty, $exclude_tree is ignored. Default empty array. - * @type int $number Maximum number of terms to return. Accepts 1+ or -1 (all). - * Default -1. - * @type int $offset The number by which to offset the terms query. Default empty. - * @type string $fields Term fields to query for. Accepts 'all' (returns an array of - * term objects), 'ids' or 'names' (returns an array of integers - * or strings, respectively. Default 'all'. - * @type string|array $slug Optional. Slug or array of slugs to return term(s) for. Default empty. - * @type bool $hierarchical Whether to include terms that have non-empty descendants (even - * if $hide_empty is set to true). Default true. - * @type string $search Search criteria to match terms. Will be SQL-formatted with - * wildcards before and after. Default empty. - * @type string $name__like Retrieve terms with criteria by which a term is LIKE $name__like. - * Default empty. - * @type string $description__like Retrieve terms where the description is LIKE $description__like. - * Default empty. - * @type bool $pad_counts Whether to pad the quantity of a term's children in the quantity - * of each term's "count" object variable. Default false. - * @type string $get Whether to return terms regardless of ancestry or whether the terms - * are empty. Accepts 'all' or empty (disabled). Default empty. - * @type int $child_of Term ID to retrieve child terms of. If multiple taxonomies - * are passed, $child_of is ignored. Default 0. - * @type int|string $parent Parent term ID to retrieve direct-child terms of. Default empty. - * @type string $cache_domain Unique cache key to be produced when this query is stored in an - * object cache. Default is 'core'. + * @type string $orderby Field(s) to order terms by. Accepts term fields ('name', 'slug', + * 'term_group', 'term_id', 'id', 'description'), 'count' for term + * taxonomy count, 'include' to match the 'order' of the $include param, + * or 'none' to skip ORDER BY. Defaults to 'name'. + * @type string $order Whether to order terms in ascending or descending order. + * Accepts 'ASC' (ascending) or 'DESC' (descending). + * Default 'ASC'. + * @type bool|int $hide_empty Whether to hide terms not assigned to any posts. Accepts + * 1|true or 0|false. Default 1|true. + * @type array|string $include Array or comma/space-separated string of term ids to include. + * Default empty array. + * @type array|string $exclude Array or comma/space-separated string of term ids to exclude. + * If $include is non-empty, $exclude is ignored. + * Default empty array. + * @type array|string $exclude_tree Array or comma/space-separated string of term ids to exclude + * along with all of their descendant terms. If $include is + * non-empty, $exclude_tree is ignored. Default empty array. + * @type int|string $number Maximum number of terms to return. Accepts ''|0 (all) or any + * positive number. Default ''|0 (all). + * @type int $offset The number by which to offset the terms query. Default empty. + * @type string $fields Term fields to query for. Accepts 'all' (returns an array of complete + * term objects), 'ids' (returns an array of ids), 'id=>parent' (returns + * an associative array with ids as keys, parent term IDs as values), + * 'names' (returns an array of term names), 'count' (returns the number + * of matching terms), 'id=>name' (returns an associative array with ids + * as keys, term names as values), or 'id=>slug' (returns an associative + * array with ids as keys, term slugs as values). Default 'all'. + * @type string|array $name Optional. Name or array of names to return term(s) for. Default empty. + * @type string|array $slug Optional. Slug or array of slugs to return term(s) for. Default empty. + * @type bool $hierarchical Whether to include terms that have non-empty descendants (even + * if $hide_empty is set to true). Default true. + * @type string $search Search criteria to match terms. Will be SQL-formatted with + * wildcards before and after. Default empty. + * @type string $name__like Retrieve terms with criteria by which a term is LIKE $name__like. + * Default empty. + * @type string $description__like Retrieve terms where the description is LIKE $description__like. + * Default empty. + * @type bool $pad_counts Whether to pad the quantity of a term's children in the quantity + * of each term's "count" object variable. Default false. + * @type string $get Whether to return terms regardless of ancestry or whether the terms + * are empty. Accepts 'all' or empty (disabled). Default empty. + * @type int $child_of Term ID to retrieve child terms of. If multiple taxonomies + * are passed, $child_of is ignored. Default 0. + * @type int|string $parent Parent term ID to retrieve direct-child terms of. Default empty. + * @type bool $childless True to limit results to terms that have no children. This parameter + * has no effect on non-hierarchical taxonomies. Default false. + * @type string $cache_domain Unique cache key to be produced when this query is stored in an + * object cache. Default is 'core'. + * @type bool $update_term_meta_cache Whether to prime meta caches for matched terms. Default true. + * @type array $meta_query Meta query clauses to limit retrieved terms by. + * See `WP_Meta_Query`. Default empty. * } - * @return array|WP_Error List of Term Objects and their children. Will return WP_Error, if any of $taxonomies - * do not exist. + * @return array|int|WP_Error List of WP_Term instances and their children. Will return WP_Error, if any of $taxonomies + * do not exist. */ function get_terms( $taxonomies, $args = '' ) { global $wpdb; @@ -1611,22 +1078,60 @@ function get_terms( $taxonomies, $args = '' ) { foreach ( $taxonomies as $taxonomy ) { if ( ! taxonomy_exists($taxonomy) ) { - $error = new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); - return $error; + return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy' ) ); } } - $defaults = array('orderby' => 'name', 'order' => 'ASC', - 'hide_empty' => true, 'exclude' => array(), 'exclude_tree' => array(), 'include' => array(), - 'number' => '', 'fields' => 'all', 'slug' => '', 'parent' => '', - 'hierarchical' => true, 'child_of' => 0, 'get' => '', 'name__like' => '', 'description__like' => '', - 'pad_counts' => false, 'offset' => '', 'search' => '', 'cache_domain' => 'core' ); - $args = wp_parse_args( $args, $defaults ); + $defaults = array( + 'orderby' => 'name', + 'order' => 'ASC', + 'hide_empty' => true, + 'include' => array(), + 'exclude' => array(), + 'exclude_tree' => array(), + 'number' => '', + 'offset' => '', + 'fields' => 'all', + 'name' => '', + 'slug' => '', + 'hierarchical' => true, + 'search' => '', + 'name__like' => '', + 'description__like' => '', + 'pad_counts' => false, + 'get' => '', + 'child_of' => 0, + 'parent' => '', + 'childless' => false, + 'cache_domain' => 'core', + 'update_term_meta_cache' => true, + 'meta_query' => '' + ); + + /** + * Filter the terms query default arguments. + * + * Use 'get_terms_args' to filter the passed arguments. + * + * @since 4.4.0 + * + * @param array $defaults An array of default get_terms() arguments. + * @param array $taxonomies An array of taxonomies. + */ + $args = wp_parse_args( $args, apply_filters( 'get_terms_defaults', $defaults, $taxonomies ) ); + $args['number'] = absint( $args['number'] ); $args['offset'] = absint( $args['offset'] ); // Save queries by not crawling the tree in the case of multiple taxes or a flat tax. - if ( ! $single_taxonomy || ! is_taxonomy_hierarchical( reset( $taxonomies ) ) ) { + $has_hierarchical_tax = false; + foreach ( $taxonomies as $_tax ) { + if ( is_taxonomy_hierarchical( $_tax ) ) { + $has_hierarchical_tax = true; + } + } + + if ( ! $has_hierarchical_tax ) { $args['hierarchical'] = false; $args['pad_counts'] = false; } @@ -1637,6 +1142,7 @@ function get_terms( $taxonomies, $args = '' ) { } if ( 'all' == $args['get'] ) { + $args['childless'] = false; $args['child_of'] = 0; $args['hide_empty'] = 0; $args['hierarchical'] = false; @@ -1648,79 +1154,68 @@ function get_terms( $taxonomies, $args = '' ) { * * @since 3.1.0 * - * @param array $args An array of arguments. - * @param string|array $taxonomies A taxonomy or array of taxonomies. + * @param array $args An array of get_terms() arguments. + * @param array $taxonomies An array of taxonomies. */ $args = apply_filters( 'get_terms_args', $args, $taxonomies ); + // Avoid the query if the queried parent/child_of term has no descendants. $child_of = $args['child_of']; + $parent = $args['parent']; + if ( $child_of ) { - $hierarchy = _get_term_hierarchy( reset( $taxonomies ) ); - if ( ! isset( $hierarchy[ $child_of ] ) ) { - return $empty_array; - } + $_parent = $child_of; + } elseif ( $parent ) { + $_parent = $parent; + } else { + $_parent = false; } - $parent = $args['parent']; - if ( $parent ) { - $hierarchy = _get_term_hierarchy( reset( $taxonomies ) ); - if ( ! isset( $hierarchy[ $parent ] ) ) { - return $empty_array; - } - } + if ( $_parent ) { + $in_hierarchy = false; + foreach ( $taxonomies as $_tax ) { + $hierarchy = _get_term_hierarchy( $_tax ); - // $args can be whatever, only use the args defined in defaults to compute the key - $filter_key = ( has_filter('list_terms_exclusions') ) ? serialize($GLOBALS['wp_filter']['list_terms_exclusions']) : ''; - $key = md5( serialize( wp_array_slice_assoc( $args, array_keys( $defaults ) ) ) . serialize( $taxonomies ) . $filter_key ); - $last_changed = wp_cache_get( 'last_changed', 'terms' ); - if ( ! $last_changed ) { - $last_changed = microtime(); - wp_cache_set( 'last_changed', $last_changed, 'terms' ); - } - $cache_key = "get_terms:$key:$last_changed"; - $cache = wp_cache_get( $cache_key, 'terms' ); - if ( false !== $cache ) { + if ( isset( $hierarchy[ $_parent ] ) ) { + $in_hierarchy = true; + } + } - /** - * Filter the given taxonomy's terms cache. - * - * @since 2.3.0 - * - * @param array $cache Cached array of terms for the given taxonomy. - * @param string|array $taxonomies A taxonomy or array of taxonomies. - * @param array $args An array of arguments to get terms. - */ - $cache = apply_filters( 'get_terms', $cache, $taxonomies, $args ); - return $cache; + if ( ! $in_hierarchy ) { + return $empty_array; + } } $_orderby = strtolower( $args['orderby'] ); if ( 'count' == $_orderby ) { $orderby = 'tt.count'; - } else if ( 'name' == $_orderby ) { + } elseif ( 'name' == $_orderby ) { $orderby = 't.name'; - } else if ( 'slug' == $_orderby ) { + } elseif ( 'slug' == $_orderby ) { $orderby = 't.slug'; - } else if ( 'include' == $_orderby && ! empty( $args['include'] ) ) { + } elseif ( 'include' == $_orderby && ! empty( $args['include'] ) ) { $include = implode( ',', array_map( 'absint', $args['include'] ) ); $orderby = "FIELD( t.term_id, $include )"; - } else if ( 'term_group' == $_orderby ) { + } elseif ( 'term_group' == $_orderby ) { $orderby = 't.term_group'; - } else if ( 'none' == $_orderby ) { + } elseif ( 'description' == $_orderby ) { + $orderby = 'tt.description'; + } elseif ( 'none' == $_orderby ) { $orderby = ''; - } elseif ( empty($_orderby) || 'id' == $_orderby ) { + } elseif ( empty( $_orderby ) || 'id' == $_orderby || 'term_id' === $_orderby ) { $orderby = 't.term_id'; } else { $orderby = 't.name'; } + /** * Filter the ORDERBY clause of the terms query. * * @since 2.8.0 * - * @param string $orderby ORDERBY clause of the terms query. - * @param array $args An array of terms query arguments. - * @param string|array $taxonomies A taxonomy or array of taxonomies. + * @param string $orderby `ORDERBY` clause of the terms query. + * @param array $args An array of terms query arguments. + * @param array $taxonomies An array of taxonomies. */ $orderby = apply_filters( 'get_terms_orderby', $orderby, $args, $taxonomies ); @@ -1753,6 +1248,7 @@ function get_terms( $taxonomies, $args = '' ) { $where .= $inclusions; } + $exclusions = array(); if ( ! empty( $exclude_tree ) ) { $exclude_tree = wp_parse_id_list( $exclude_tree ); $excluded_children = $exclude_tree; @@ -1762,22 +1258,26 @@ function get_terms( $taxonomies, $args = '' ) { (array) get_terms( $taxonomies[0], array( 'child_of' => intval( $extrunk ), 'fields' => 'ids', 'hide_empty' => 0 ) ) ); } - $exclusions = implode( ',', array_map( 'intval', $excluded_children ) ); - } else { - $exclusions = ''; + $exclusions = array_merge( $excluded_children, $exclusions ); } if ( ! empty( $exclude ) ) { - $exterms = wp_parse_id_list( $exclude ); - if ( empty( $exclusions ) ) { - $exclusions = implode( ',', $exterms ); - } else { - $exclusions .= ', ' . implode( ',', $exterms ); + $exclusions = array_merge( wp_parse_id_list( $exclude ), $exclusions ); + } + + // 'childless' terms are those without an entry in the flattened term hierarchy. + $childless = (bool) $args['childless']; + if ( $childless ) { + foreach ( $taxonomies as $_tax ) { + $term_hierarchy = _get_term_hierarchy( $_tax ); + $exclusions = array_merge( array_keys( $term_hierarchy ), $exclusions ); } } if ( ! empty( $exclusions ) ) { - $exclusions = ' AND t.term_id NOT IN (' . $exclusions . ')'; + $exclusions = ' AND t.term_id NOT IN (' . implode( ',', array_map( 'intval', $exclusions ) ) . ')'; + } else { + $exclusions = ''; } /** @@ -1785,9 +1285,9 @@ function get_terms( $taxonomies, $args = '' ) { * * @since 2.3.0 * - * @param string $exclusions NOT IN clause of the terms query. - * @param array $args An array of terms query arguments. - * @param string|array $taxonomies A taxonomy or array of taxonomies. + * @param string $exclusions `NOT IN` clause of the terms query. + * @param array $args An array of terms query arguments. + * @param array $taxonomies An array of taxonomies. */ $exclusions = apply_filters( 'list_terms_exclusions', $exclusions, $args, $taxonomies ); @@ -1795,6 +1295,15 @@ function get_terms( $taxonomies, $args = '' ) { $where .= $exclusions; } + if ( ! empty( $args['name'] ) ) { + $names = (array) $args['name']; + foreach ( $names as &$_name ) { + $_name = sanitize_term_field( 'name', $_name, 0, reset( $taxonomies ), 'db' ); + } + + $where .= " AND t.name IN ('" . implode( "', '", array_map( 'esc_sql', $names ) ) . "')"; + } + if ( ! empty( $args['slug'] ) ) { if ( is_array( $args['slug'] ) ) { $slug = array_map( 'sanitize_title', $args['slug'] ); @@ -1829,7 +1338,7 @@ function get_terms( $taxonomies, $args = '' ) { $number = $args['number']; $offset = $args['offset']; - // don't limit the query results when we have to descend the family tree + // Don't limit the query results when we have to descend the family tree. if ( $number && ! $hierarchical && ! $child_of && '' === $parent ) { if ( $offset ) { $limits = 'LIMIT ' . $offset . ',' . $number; @@ -1845,6 +1354,18 @@ function get_terms( $taxonomies, $args = '' ) { $where .= $wpdb->prepare( ' AND ((t.name LIKE %s) OR (t.slug LIKE %s))', $like, $like ); } + // Meta query support. + $join = ''; + $distinct = ''; + if ( ! empty( $args['meta_query'] ) ) { + $mquery = new WP_Meta_Query( $args['meta_query'] ); + $mq_sql = $mquery->get_sql( 'term', 't', 'term_id' ); + + $join .= $mq_sql['join']; + $where .= $mq_sql['where']; + $distinct .= "DISTINCT"; + } + $selects = array(); switch ( $args['fields'] ) { case 'all': @@ -1852,10 +1373,10 @@ function get_terms( $taxonomies, $args = '' ) { break; case 'ids': case 'id=>parent': - $selects = array( 't.term_id', 'tt.parent', 'tt.count' ); + $selects = array( 't.term_id', 'tt.parent', 'tt.count', 'tt.taxonomy' ); break; case 'names': - $selects = array( 't.term_id', 'tt.parent', 'tt.count', 't.name' ); + $selects = array( 't.term_id', 'tt.parent', 'tt.count', 't.name', 'tt.taxonomy' ); break; case 'count': $orderby = ''; @@ -1863,10 +1384,10 @@ function get_terms( $taxonomies, $args = '' ) { $selects = array( 'COUNT(*)' ); break; case 'id=>name': - $selects = array( 't.term_id', 't.name', 'tt.count' ); + $selects = array( 't.term_id', 't.name', 'tt.count', 'tt.taxonomy' ); break; case 'id=>slug': - $selects = array( 't.term_id', 't.slug', 'tt.count' ); + $selects = array( 't.term_id', 't.slug', 'tt.count', 'tt.taxonomy' ); break; } @@ -1875,40 +1396,74 @@ function get_terms( $taxonomies, $args = '' ) { /** * Filter the fields to select in the terms query. * + * Field lists modified using this filter will only modify the term fields returned + * by the function when the `$fields` parameter set to 'count' or 'all'. In all other + * cases, the term fields in the results array will be determined by the `$fields` + * parameter alone. + * + * Use of this filter can result in unpredictable behavior, and is not recommended. + * * @since 2.8.0 * - * @param array $selects An array of fields to select for the terms query. - * @param array $args An array of term query arguments. - * @param string|array $taxonomies A taxonomy or array of taxonomies. + * @param array $selects An array of fields to select for the terms query. + * @param array $args An array of term query arguments. + * @param array $taxonomies An array of taxonomies. */ $fields = implode( ', ', apply_filters( 'get_terms_fields', $selects, $args, $taxonomies ) ); - $join = "INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id"; + $join .= " INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id"; - $pieces = array( 'fields', 'join', 'where', 'orderby', 'order', 'limits' ); + $pieces = array( 'fields', 'join', 'where', 'distinct', 'orderby', 'order', 'limits' ); /** * Filter the terms query SQL clauses. * * @since 3.1.0 * - * @param array $pieces Terms query SQL clauses. - * @param string|array $taxonomies A taxonomy or array of taxonomies. - * @param array $args An array of terms query arguments. + * @param array $pieces Terms query SQL clauses. + * @param array $taxonomies An array of taxonomies. + * @param array $args An array of terms query arguments. */ $clauses = apply_filters( 'terms_clauses', compact( $pieces ), $taxonomies, $args ); + $fields = isset( $clauses[ 'fields' ] ) ? $clauses[ 'fields' ] : ''; $join = isset( $clauses[ 'join' ] ) ? $clauses[ 'join' ] : ''; $where = isset( $clauses[ 'where' ] ) ? $clauses[ 'where' ] : ''; + $distinct = isset( $clauses[ 'distinct' ] ) ? $clauses[ 'distinct' ] : ''; $orderby = isset( $clauses[ 'orderby' ] ) ? $clauses[ 'orderby' ] : ''; $order = isset( $clauses[ 'order' ] ) ? $clauses[ 'order' ] : ''; $limits = isset( $clauses[ 'limits' ] ) ? $clauses[ 'limits' ] : ''; - $query = "SELECT $fields FROM $wpdb->terms AS t $join WHERE $where $orderby $order $limits"; + $query = "SELECT $distinct $fields FROM $wpdb->terms AS t $join WHERE $where $orderby $order $limits"; + + // $args can be anything. Only use the args defined in defaults to compute the key. + $key = md5( serialize( wp_array_slice_assoc( $args, array_keys( $defaults ) ) ) . serialize( $taxonomies ) . $query ); + $last_changed = wp_cache_get( 'last_changed', 'terms' ); + if ( ! $last_changed ) { + $last_changed = microtime(); + wp_cache_set( 'last_changed', $last_changed, 'terms' ); + } + $cache_key = "get_terms:$key:$last_changed"; + $cache = wp_cache_get( $cache_key, 'terms' ); + if ( false !== $cache ) { + if ( 'all' === $_fields ) { + $cache = array_map( 'get_term', $cache ); + } + + /** + * Filter the given taxonomy's terms cache. + * + * @since 2.3.0 + * + * @param array $cache Cached array of terms for the given taxonomy. + * @param array $taxonomies An array of taxonomies. + * @param array $args An array of get_terms() arguments. + */ + return apply_filters( 'get_terms', $cache, $taxonomies, $args ); + } if ( 'count' == $_fields ) { - $term_count = $wpdb->get_var($query); - return $term_count; + return $wpdb->get_var( $query ); } $terms = $wpdb->get_results($query); @@ -1916,66 +1471,75 @@ function get_terms( $taxonomies, $args = '' ) { update_term_cache( $terms ); } + // Prime termmeta cache. + if ( $args['update_term_meta_cache'] ) { + $term_ids = wp_list_pluck( $terms, 'term_id' ); + update_termmeta_cache( $term_ids ); + } + if ( empty($terms) ) { wp_cache_add( $cache_key, array(), 'terms', DAY_IN_SECONDS ); /** This filter is documented in wp-includes/taxonomy.php */ - $terms = apply_filters( 'get_terms', array(), $taxonomies, $args ); - return $terms; + return apply_filters( 'get_terms', array(), $taxonomies, $args ); } if ( $child_of ) { - $children = _get_term_hierarchy( reset( $taxonomies ) ); - if ( ! empty( $children ) ) { - $terms = _get_term_children( $child_of, $terms, reset( $taxonomies ) ); + foreach ( $taxonomies as $_tax ) { + $children = _get_term_hierarchy( $_tax ); + if ( ! empty( $children ) ) { + $terms = _get_term_children( $child_of, $terms, $_tax ); + } } } // Update term counts to include children. if ( $args['pad_counts'] && 'all' == $_fields ) { - _pad_term_counts( $terms, reset( $taxonomies ) ); + foreach ( $taxonomies as $_tax ) { + _pad_term_counts( $terms, $_tax ); + } } + // Make sure we show empty categories that have children. if ( $hierarchical && $args['hide_empty'] && is_array( $terms ) ) { foreach ( $terms as $k => $term ) { if ( ! $term->count ) { - $children = get_term_children( $term->term_id, reset( $taxonomies ) ); + $children = get_term_children( $term->term_id, $term->taxonomy ); if ( is_array( $children ) ) { foreach ( $children as $child_id ) { - $child = get_term( $child_id, reset( $taxonomies ) ); + $child = get_term( $child_id, $term->taxonomy ); if ( $child->count ) { continue 2; } } } - // It really is empty + // It really is empty. unset($terms[$k]); } } } - reset( $terms ); $_terms = array(); if ( 'id=>parent' == $_fields ) { - while ( $term = array_shift( $terms ) ) { - $_terms[$term->term_id] = $term->parent; + foreach ( $terms as $term ) { + $_terms[ $term->term_id ] = $term->parent; } } elseif ( 'ids' == $_fields ) { - while ( $term = array_shift( $terms ) ) { + foreach ( $terms as $term ) { $_terms[] = $term->term_id; } } elseif ( 'names' == $_fields ) { - while ( $term = array_shift( $terms ) ) { + foreach ( $terms as $term ) { $_terms[] = $term->name; } } elseif ( 'id=>name' == $_fields ) { - while ( $term = array_shift( $terms ) ) { - $_terms[$term->term_id] = $term->name; + foreach ( $terms as $term ) { + $_terms[ $term->term_id ] = $term->name; } } elseif ( 'id=>slug' == $_fields ) { - while ( $term = array_shift( $terms ) ) { - $_terms[$term->term_id] = $term->slug; + foreach ( $terms as $term ) { + $_terms[ $term->term_id ] = $term->slug; } } @@ -1989,9 +1553,147 @@ function get_terms( $taxonomies, $args = '' ) { wp_cache_add( $cache_key, $terms, 'terms', DAY_IN_SECONDS ); - /** This filter is documented in wp-includes/taxonomy */ - $terms = apply_filters( 'get_terms', $terms, $taxonomies, $args ); - return $terms; + if ( 'all' === $_fields ) { + $terms = array_map( 'get_term', $terms ); + } + + /** This filter is documented in wp-includes/taxonomy.php */ + return apply_filters( 'get_terms', $terms, $taxonomies, $args ); +} + +/** + * Adds metadata to a term. + * + * @since 4.4.0 + * + * @param int $term_id Term ID. + * @param string $meta_key Metadata name. + * @param mixed $meta_value Metadata value. + * @param bool $unique Optional. Whether to bail if an entry with the same key is found for the term. + * Default false. + * @return int|WP_Error|bool Meta ID on success. WP_Error when term_id is ambiguous between taxonomies. + * False on failure. + */ +function add_term_meta( $term_id, $meta_key, $meta_value, $unique = false ) { + // Bail if term meta table is not installed. + if ( get_option( 'db_version' ) < 34370 ) { + return false; + } + + if ( wp_term_is_shared( $term_id ) ) { + return new WP_Error( 'ambiguous_term_id', __( 'Term meta cannot be added to terms that are shared between taxonomies.'), $term_id ); + } + + $added = add_metadata( 'term', $term_id, $meta_key, $meta_value, $unique ); + + // Bust term query cache. + if ( $added ) { + wp_cache_set( 'last_changed', microtime(), 'terms' ); + } + + return $added; +} + +/** + * Removes metadata matching criteria from a term. + * + * @since 4.4.0 + * + * @param int $term_id Term ID. + * @param string $meta_key Metadata name. + * @param mixed $meta_value Optional. Metadata value. If provided, rows will only be removed that match the value. + * @return bool True on success, false on failure. + */ +function delete_term_meta( $term_id, $meta_key, $meta_value = '' ) { + // Bail if term meta table is not installed. + if ( get_option( 'db_version' ) < 34370 ) { + return false; + } + + $deleted = delete_metadata( 'term', $term_id, $meta_key, $meta_value ); + + // Bust term query cache. + if ( $deleted ) { + wp_cache_set( 'last_changed', microtime(), 'terms' ); + } + + return $deleted; +} + +/** + * Retrieves metadata for a term. + * + * @since 4.4.0 + * + * @param int $term_id Term ID. + * @param string $key Optional. The meta key to retrieve. If no key is provided, fetches all metadata for the term. + * @param bool $single Whether to return a single value. If false, an array of all values matching the + * `$term_id`/`$key` pair will be returned. Default: false. + * @return mixed If `$single` is false, an array of metadata values. If `$single` is true, a single metadata value. + */ +function get_term_meta( $term_id, $key = '', $single = false ) { + // Bail if term meta table is not installed. + if ( get_option( 'db_version' ) < 34370 ) { + return false; + } + + return get_metadata( 'term', $term_id, $key, $single ); +} + +/** + * Updates term metadata. + * + * Use the `$prev_value` parameter to differentiate between meta fields with the same key and term ID. + * + * If the meta field for the term does not exist, it will be added. + * + * @since 4.4.0 + * + * @param int $term_id Term ID. + * @param string $meta_key Metadata key. + * @param mixed $meta_value Metadata value. + * @param mixed $prev_value Optional. Previous value to check before removing. + * @return int|WP_Error|bool Meta ID if the key didn't previously exist. True on successful update. + * WP_Error when term_id is ambiguous between taxonomies. False on failure. + */ +function update_term_meta( $term_id, $meta_key, $meta_value, $prev_value = '' ) { + // Bail if term meta table is not installed. + if ( get_option( 'db_version' ) < 34370 ) { + return false; + } + + if ( wp_term_is_shared( $term_id ) ) { + return new WP_Error( 'ambiguous_term_id', __( 'Term meta cannot be added to terms that are shared between taxonomies.'), $term_id ); + } + + $updated = update_metadata( 'term', $term_id, $meta_key, $meta_value, $prev_value ); + + // Bust term query cache. + if ( $updated ) { + wp_cache_set( 'last_changed', microtime(), 'terms' ); + } + + return $updated; +} + +/** + * Updates metadata cache for list of term IDs. + * + * Performs SQL query to retrieve all metadata for the terms matching `$term_ids` and stores them in the cache. + * Subsequent calls to `get_term_meta()` will not need to query the database. + * + * @since 4.4.0 + * + * @param array $term_ids List of term IDs. + * @return array|false Returns false if there is nothing to update. Returns an array of metadata on success. + */ +function update_termmeta_cache( $term_ids ) { + // Bail if term meta table is not installed. + if ( get_option( 'db_version' ) < 34370 ) { + return; + } + + return update_meta_cache( 'term', $term_ids ); } /** @@ -2003,9 +1705,9 @@ function get_terms( $taxonomies, $args = '' ) { * * @global wpdb $wpdb WordPress database abstraction object. * - * @param int|string $term The term to check - * @param string $taxonomy The taxonomy name to use - * @param int $parent Optional. ID of parent term under which to confine the exists search. + * @param int|string $term The term to check + * @param string $taxonomy The taxonomy name to use + * @param int $parent Optional. ID of parent term under which to confine the exists search. * @return mixed Returns null if the term does not exist. Returns the term ID * if no taxonomy is specified and the term ID exists. Returns * an array of the term ID and the term taxonomy ID the taxonomy @@ -2067,10 +1769,10 @@ function term_exists( $term, $taxonomy = '', $parent = null ) { * * @since 3.4.0 * - * @param int|object $term1 ID or object to check if this is the parent term. - * @param int|object $term2 The child term. - * @param string $taxonomy Taxonomy name that $term1 and $term2 belong to. - * @return bool Whether $term2 is child of $term1 + * @param int|object $term1 ID or object to check if this is the parent term. + * @param int|object $term2 The child term. + * @param string $taxonomy Taxonomy name that $term1 and `$term2` belong to. + * @return bool Whether `$term2` is a child of `$term1`. */ function term_is_ancestor_of( $term1, $term2, $taxonomy ) { if ( ! isset( $term1->term_id ) ) @@ -2097,13 +1799,13 @@ function term_is_ancestor_of( $term1, $term2, $taxonomy ) { * * @since 2.3.0 * - * @param array|object $term The term to check - * @param string $taxonomy The taxonomy name to use - * @param string $context Default is 'display'. - * @return array|object Term with all fields sanitized + * @param array|object $term The term to check. + * @param string $taxonomy The taxonomy name to use. + * @param string $context Optional. Context in which to sanitize the term. Accepts 'edit', 'db', + * 'display', 'attribute', or 'js'. Default 'display'. + * @return array|object Term with all fields sanitized. */ function sanitize_term($term, $taxonomy, $context = 'display') { - $fields = array( 'term_id', 'name', 'description', 'slug', 'count', 'parent', 'term_group', 'term_taxonomy_id', 'object_id' ); $do_object = is_object( $term ); @@ -2143,14 +1845,13 @@ function sanitize_term($term, $taxonomy, $context = 'display') { * * @since 2.3.0 * - * @global wpdb $wpdb WordPress database abstraction object. - * - * @param string $field Term field to sanitize - * @param string $value Search for this term value - * @param int $term_id Term ID - * @param string $taxonomy Taxonomy Name - * @param string $context Either edit, db, display, attribute, or js. - * @return mixed sanitized field + * @param string $field Term field to sanitize. + * @param string $value Search for this term value. + * @param int $term_id Term ID. + * @param string $taxonomy Taxonomy Name. + * @param string $context Context in which to sanitize the term field. Accepts 'edit', 'db', 'display', + * 'attribute', or 'js'. + * @return mixed Sanitized field. */ function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) { $int_fields = array( 'parent', 'term_id', 'count', 'term_group', 'term_taxonomy_id', 'object_id' ); @@ -2190,11 +1891,12 @@ function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) { * @param int $term_id Term ID. */ $value = apply_filters( "edit_{$taxonomy}_{$field}", $value, $term_id ); + if ( 'description' == $field ) $value = esc_html($value); // textarea_escaped else $value = esc_attr($value); - } else if ( 'db' == $context ) { + } elseif ( 'db' == $context ) { /** * Filter a term field value before it is sanitized. @@ -2219,6 +1921,7 @@ function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) { * @param mixed $value Value of the taxonomy field. */ $value = apply_filters( "pre_{$taxonomy}_{$field}", $value ); + // Back compat filters if ( 'slug' == $field ) { /** @@ -2233,7 +1936,7 @@ function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) { $value = apply_filters( 'pre_category_nicename', $value ); } - } else if ( 'rss' == $context ) { + } elseif ( 'rss' == $context ) { /** * Filter the term field for use in RSS. @@ -2250,7 +1953,7 @@ function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) { /** * Filter the taxonomy field for use in RSS. * - * The dynamic portions of the hook name, `$taxonomy`, and $field, refer + * The dynamic portions of the hook name, `$taxonomy`, and `$field`, refer * to the taxonomy slug and field name, respectively. * * @since 2.3.0 @@ -2278,7 +1981,7 @@ function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) { /** * Filter the taxonomy field sanitized for display. * - * The dynamic portions of the filter name, `$taxonomy`, and $field, refer + * The dynamic portions of the filter name, `$taxonomy`, and `$field`, refer * to the taxonomy slug and taxonomy field, respectively. * * @since 2.3.0 @@ -2290,11 +1993,11 @@ function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) { $value = apply_filters( "{$taxonomy}_{$field}", $value, $term_id, $context ); } - if ( 'attribute' == $context ) + if ( 'attribute' == $context ) { $value = esc_attr($value); - else if ( 'js' == $context ) + } elseif ( 'js' == $context ) { $value = esc_js($value); - + } return $value; } @@ -2303,11 +2006,13 @@ function sanitize_term_field($field, $value, $term_id, $taxonomy, $context) { * * Default $args is 'hide_empty' which can be 'hide_empty=true' or array('hide_empty' => true). * + * @todo Document $args as a hash notation. + * * @since 2.3.0 * - * @param string $taxonomy Taxonomy name - * @param array|string $args Overwrite defaults. See get_terms() - * @return int|WP_Error How many terms are in $taxonomy. WP_Error if $taxonomy does not exist. + * @param string $taxonomy Taxonomy name + * @param array|string $args Overwrite defaults. See get_terms() + * @return array|int|WP_Error How many terms are in $taxonomy. WP_Error if $taxonomy does not exist. */ function wp_count_terms( $taxonomy, $args = array() ) { $defaults = array('hide_empty' => false); @@ -2333,7 +2038,7 @@ function wp_count_terms( $taxonomy, $args = array() ) { * * @since 2.3.0 * - * @param int $object_id The term Object Id that refers to the term + * @param int $object_id The term Object Id that refers to the term. * @param string|array $taxonomies List of Taxonomy Names or single Taxonomy name. */ function wp_delete_object_term_relationships( $object_id, $taxonomies ) { @@ -2355,20 +2060,24 @@ function wp_delete_object_term_relationships( $object_id, $taxonomies ) { * If the term is a parent of other terms, then the children will be updated to * that term's parent. * - * The $args 'default' will only override the terms found, if there is only one + * Metadata associated with the term will be deleted. + * + * The `$args` 'default' will only override the terms found, if there is only one * term found. Any other and the found terms are used. * * The $args 'force_default' will force the term supplied as default to be * assigned even if the object was not going to be termless * + * @todo Document $args as a hash notation. + * * @since 2.3.0 * * @global wpdb $wpdb WordPress database abstraction object. * - * @param int $term Term ID - * @param string $taxonomy Taxonomy Name - * @param array|string $args Optional. Change 'default' term id and override found term ids. - * @return bool|WP_Error Returns false if not term; true if completes delete action. + * @param int $term Term ID. + * @param string $taxonomy Taxonomy Name. + * @param array|string $args Optional. Change 'default' term id and override found term ids. + * @return bool|int|WP_Error Returns false if not term; true if completes delete action. */ function wp_delete_term( $term, $taxonomy, $args = array() ) { global $wpdb; @@ -2431,6 +2140,7 @@ function wp_delete_term( $term, $taxonomy, $args = array() ) { * @param array $edit_tt_ids An array of term taxonomy IDs for the given term. */ do_action( 'edit_term_taxonomies', $edit_tt_ids ); + $wpdb->update( $wpdb->term_taxonomy, compact( 'parent' ), array( 'parent' => $term_obj->term_id) + compact( 'taxonomy' ) ); // Clean the cache for all child terms. @@ -2447,6 +2157,9 @@ function wp_delete_term( $term, $taxonomy, $args = array() ) { do_action( 'edited_term_taxonomies', $edit_tt_ids ); } + // Get the term before deleting it or its term relationships so we can pass to actions below. + $deleted_term = get_term( $term, $taxonomy ); + $objects = $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tt_id ) ); foreach ( (array) $objects as $object ) { @@ -2462,13 +2175,15 @@ function wp_delete_term( $term, $taxonomy, $args = array() ) { wp_set_object_terms($object, $terms, $taxonomy); } - // Clean the relationship caches for all object types using this term + // Clean the relationship caches for all object types using this term. $tax_object = get_taxonomy( $taxonomy ); foreach ( $tax_object->object_type as $object_type ) clean_object_term_cache( $objects, $object_type ); - // Get the object before deletion so we can pass to actions below - $deleted_term = get_term( $term, $taxonomy ); + $term_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->termmeta WHERE term_id = %d ", $term ) ); + foreach ( $term_meta_ids as $mid ) { + delete_metadata_by_mid( 'term', $mid ); + } /** * Fires immediately before a term taxonomy ID is deleted. @@ -2519,7 +2234,7 @@ function wp_delete_term( $term, $taxonomy, $args = array() ) { * @param int $term Term ID. * @param int $tt_id Term taxonomy ID. * @param mixed $deleted_term Copy of the already-deleted term, in the form specified - * by the parent function. {@see WP_Error} otherwise. + * by the parent function. WP_Error otherwise. */ do_action( "delete_$taxonomy", $term, $tt_id, $deleted_term ); @@ -2532,7 +2247,7 @@ function wp_delete_term( $term, $taxonomy, $args = array() ) { * @since 2.0.0 * * @param int $cat_ID - * @return mixed Returns true if completes delete action; false if term doesn't exist; + * @return bool|int|WP_Error Returns true if completes delete action; false if term doesn't exist; * Zero on attempted deletion of default Category; WP_Error object is also a possibility. */ function wp_delete_category( $cat_ID ) { @@ -2542,33 +2257,34 @@ function wp_delete_category( $cat_ID ) { /** * Retrieves the terms associated with the given object(s), in the supplied taxonomies. * - * The following information has to do the $args parameter and for what can be - * contained in the string or array of that parameter, if it exists. - * - * The first argument is called, 'orderby' and has the default value of 'name'. - * The other value that is supported is 'count'. - * - * The second argument is called, 'order' and has the default value of 'ASC'. - * The only other value that will be acceptable is 'DESC'. - * - * The final argument supported is called, 'fields' and has the default value of - * 'all'. There are multiple other options that can be used instead. Supported - * values are as follows: 'all', 'ids', 'names', and finally - * 'all_with_object_id'. - * - * The fields argument also decides what will be returned. If 'all' or - * 'all_with_object_id' is chosen or the default kept intact, then all matching - * terms objects will be returned. If either 'ids' or 'names' is used, then an - * array of all matching term ids or term names will be returned respectively. - * * @since 2.3.0 + * @since 4.2.0 Added support for 'taxonomy', 'parent', and 'term_taxonomy_id' values of `$orderby`. + * Introduced `$parent` argument. + * @since 4.4.0 Introduced `$meta_query` and `$update_term_meta_cache` arguments. When `$fields` is 'all' or + * 'all_with_object_id', an array of `WP_Term` objects will be returned. * * @global wpdb $wpdb WordPress database abstraction object. * - * @param int|array $object_ids The ID(s) of the object(s) to retrieve. + * @param int|array $object_ids The ID(s) of the object(s) to retrieve. * @param string|array $taxonomies The taxonomies to retrieve terms from. - * @param array|string $args Change what is returned - * @return array|WP_Error The requested term data or empty array if no terms found. WP_Error if any of the $taxonomies don't exist. + * @param array|string $args { + * Array of arguments. + * @type string $orderby Field by which results should be sorted. Accepts 'name', 'count', 'slug', + * 'term_group', 'term_order', 'taxonomy', 'parent', or 'term_taxonomy_id'. + * Default 'name'. + * @type string $order Sort order. Accepts 'ASC' or 'DESC'. Default 'ASC'. + * @type string $fields Fields to return for matched terms. Accepts 'all', 'ids', 'names', and + * 'all_with_object_id'. Note that 'all' or 'all_with_object_id' will result + * in an array of term objects being returned, 'ids' will return an array of + * integers, and 'names' an array of strings. + * @type int $parent Optional. Limit results to the direct children of a given term ID. + * @type bool $update_term_meta_cache Whether to prime termmeta cache for matched terms. Only applies when + * `$fields` is 'all', 'all_with_object_id', or 'term_id'. Default true. + * @type array $meta_query Meta query clauses to limit retrieved terms by. See `WP_Meta_Query`. + * Default empty. + * } + * @return array|WP_Error The requested term data or empty array if no terms found. + * WP_Error if any of the $taxonomies don't exist. */ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) { global $wpdb; @@ -2588,7 +2304,14 @@ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) { $object_ids = array($object_ids); $object_ids = array_map('intval', $object_ids); - $defaults = array('orderby' => 'name', 'order' => 'ASC', 'fields' => 'all'); + $defaults = array( + 'orderby' => 'name', + 'order' => 'ASC', + 'fields' => 'all', + 'parent' => '', + 'update_term_meta_cache' => true, + 'meta_query' => '', + ); $args = wp_parse_args( $args, $defaults ); $terms = array(); @@ -2610,17 +2333,13 @@ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) { $order = $args['order']; $fields = $args['fields']; - if ( 'count' == $orderby ) - $orderby = 'tt.count'; - else if ( 'name' == $orderby ) - $orderby = 't.name'; - else if ( 'slug' == $orderby ) - $orderby = 't.slug'; - else if ( 'term_group' == $orderby ) - $orderby = 't.term_group'; - else if ( 'term_order' == $orderby ) + if ( in_array( $orderby, array( 'term_id', 'name', 'slug', 'term_group' ) ) ) { + $orderby = "t.$orderby"; + } elseif ( in_array( $orderby, array( 'count', 'parent', 'taxonomy', 'term_taxonomy_id' ) ) ) { + $orderby = "tt.$orderby"; + } elseif ( 'term_order' === $orderby ) { $orderby = 'tr.term_order'; - else if ( 'none' == $orderby ) { + } elseif ( 'none' === $orderby ) { $orderby = ''; $order = ''; } else { @@ -2638,46 +2357,102 @@ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) { if ( '' !== $order && ! in_array( $order, array( 'ASC', 'DESC' ) ) ) $order = 'ASC'; + $taxonomy_array = $taxonomies; + $object_id_array = $object_ids; $taxonomies = "'" . implode("', '", $taxonomies) . "'"; $object_ids = implode(', ', $object_ids); $select_this = ''; - if ( 'all' == $fields ) + if ( 'all' == $fields ) { $select_this = 't.*, tt.*'; - else if ( 'ids' == $fields ) + } elseif ( 'ids' == $fields ) { $select_this = 't.term_id'; - else if ( 'names' == $fields ) + } elseif ( 'names' == $fields ) { $select_this = 't.name'; - else if ( 'slugs' == $fields ) + } elseif ( 'slugs' == $fields ) { $select_this = 't.slug'; - else if ( 'all_with_object_id' == $fields ) + } elseif ( 'all_with_object_id' == $fields ) { $select_this = 't.*, tt.*, tr.object_id'; + } - $query = "SELECT $select_this FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON tt.term_id = t.term_id INNER JOIN $wpdb->term_relationships AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy IN ($taxonomies) AND tr.object_id IN ($object_ids) $orderby $order"; + $where = array( + "tt.taxonomy IN ($taxonomies)", + "tr.object_id IN ($object_ids)", + ); + + if ( '' !== $args['parent'] ) { + $where[] = $wpdb->prepare( 'tt.parent = %d', $args['parent'] ); + } + + // Meta query support. + $meta_query_join = ''; + if ( ! empty( $args['meta_query'] ) ) { + $mquery = new WP_Meta_Query( $args['meta_query'] ); + $mq_sql = $mquery->get_sql( 'term', 't', 'term_id' ); + + $meta_query_join .= $mq_sql['join']; + + // Strip leading AND. + $where[] = preg_replace( '/^\s*AND/', '', $mq_sql['where'] ); + } + + $where = implode( ' AND ', $where ); + + $query = "SELECT $select_this FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON tt.term_id = t.term_id INNER JOIN $wpdb->term_relationships AS tr ON tr.term_taxonomy_id = tt.term_taxonomy_id $meta_query_join WHERE $where $orderby $order"; $objects = false; if ( 'all' == $fields || 'all_with_object_id' == $fields ) { $_terms = $wpdb->get_results( $query ); + $object_id_index = array(); foreach ( $_terms as $key => $term ) { - $_terms[$key] = sanitize_term( $term, $taxonomy, 'raw' ); + $term = sanitize_term( $term, $taxonomy, 'raw' ); + $_terms[ $key ] = $term; + + if ( isset( $term->object_id ) ) { + $object_id_index[ $key ] = $term->object_id; + } + } + + update_term_cache( $_terms ); + $_terms = array_map( 'get_term', $_terms ); + + // Re-add the object_id data, which is lost when fetching terms from cache. + if ( 'all_with_object_id' === $fields ) { + foreach ( $_terms as $key => $_term ) { + if ( isset( $object_id_index[ $key ] ) ) { + $_term->object_id = $object_id_index[ $key ]; + } + } } + $terms = array_merge( $terms, $_terms ); - update_term_cache( $terms ); $objects = true; - } else if ( 'ids' == $fields || 'names' == $fields || 'slugs' == $fields ) { + + } elseif ( 'ids' == $fields || 'names' == $fields || 'slugs' == $fields ) { $_terms = $wpdb->get_col( $query ); $_field = ( 'ids' == $fields ) ? 'term_id' : 'name'; foreach ( $_terms as $key => $term ) { $_terms[$key] = sanitize_term_field( $_field, $term, $term, $taxonomy, 'raw' ); } $terms = array_merge( $terms, $_terms ); - } else if ( 'tt_ids' == $fields ) { + } elseif ( 'tt_ids' == $fields ) { $terms = $wpdb->get_col("SELECT tr.term_taxonomy_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tr.object_id IN ($object_ids) AND tt.taxonomy IN ($taxonomies) $orderby $order"); foreach ( $terms as $key => $tt_id ) { $terms[$key] = sanitize_term_field( 'term_taxonomy_id', $tt_id, 0, $taxonomy, 'raw' ); // 0 should be the term id, however is not needed when using raw context. } } + // Update termmeta cache, if necessary. + if ( $args['update_term_meta_cache'] && ( 'all' === $fields || 'all_with_object_ids' === $fields || 'term_id' === $fields ) ) { + if ( 'term_id' === $fields ) { + $term_ids = $fields; + } else { + $term_ids = wp_list_pluck( $terms, 'term_id' ); + } + + update_termmeta_cache( $term_ids ); + } + if ( ! $terms ) { $terms = array(); } elseif ( $objects && 'all_with_object_id' !== $fields ) { @@ -2695,16 +2470,33 @@ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) { } elseif ( ! $objects ) { $terms = array_values( array_unique( $terms ) ); } + + /** + * Filter the terms for a given object or objects. + * + * @since 4.2.0 + * + * @param array $terms An array of terms for the given object or objects. + * @param array $object_id_array Array of object IDs for which `$terms` were retrieved. + * @param array $taxonomy_array Array of taxonomies from which `$terms` were retrieved. + * @param array $args An array of arguments for retrieving terms for the given + * object(s). See wp_get_object_terms() for details. + */ + $terms = apply_filters( 'get_object_terms', $terms, $object_id_array, $taxonomy_array, $args ); + /** * Filter the terms for a given object or objects. * + * The `$taxonomies` parameter passed to this filter is formatted as a SQL fragment. The + * {@see 'get_object_terms'} filter is recommended as an alternative. + * * @since 2.8.0 * - * @param array $terms An array of terms for the given object or objects. - * @param array|int $object_ids Object ID or array of IDs. - * @param array|string $taxonomies A taxonomy or array of taxonomies. - * @param array $args An array of arguments for retrieving terms for - * the given object(s). + * @param array $terms An array of terms for the given object or objects. + * @param int|array $object_ids Object ID or array of IDs. + * @param string $taxonomies SQL-formatted (comma-separated and quoted) list of taxonomy names. + * @param array $args An array of arguments for retrieving terms for the given object(s). + * See {@see wp_get_object_terms()} for details. */ return apply_filters( 'wp_get_object_terms', $terms, $object_ids, $taxonomies, $args ); } @@ -2726,7 +2518,7 @@ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) { * * If the taxonomy is hierarchical, and the 'parent' argument is not empty, * the term is inserted and the term_id will be given. - + * * Error handling: * If $taxonomy does not exist or $term is empty, * a WP_Error object will be returned. @@ -2735,7 +2527,7 @@ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) { * or the term slug and name are not unique, a WP_Error object will be returned. * * @global wpdb $wpdb WordPress database abstraction object. - + * * @since 2.3.0 * * @param string $term The term to add or update. @@ -2793,13 +2585,7 @@ function wp_insert_term( $term, $taxonomy, $args = array() ) { $slug_provided = ! empty( $args['slug'] ); if ( ! $slug_provided ) { - $_name = trim( $name ); - $existing_term = get_term_by( 'name', $_name, $taxonomy ); - if ( $existing_term ) { - $slug = $existing_term->slug; - } else { - $slug = sanitize_title( $name ); - } + $slug = sanitize_title( $name ); } else { $slug = $args['slug']; } @@ -2810,7 +2596,7 @@ function wp_insert_term( $term, $taxonomy, $args = array() ) { if ( ! empty( $alias->term_group ) ) { // The alias we want is already in a group, so let's use that one. $term_group = $alias->term_group; - } else if ( ! empty( $alias->term_id ) ) { + } elseif ( ! empty( $alias->term_id ) ) { /* * The alias is not in a group, so we create a new one * and add the alias to it. @@ -2823,20 +2609,47 @@ function wp_insert_term( $term, $taxonomy, $args = array() ) { } } - // Terms with duplicate names are not allowed at the same level of a taxonomy hierarchy. - if ( $exists = term_exists( $slug, $taxonomy ) ) { - $existing_term = get_term( $exists['term_id'], $taxonomy ); + /* + * Prevent the creation of terms with duplicate names at the same level of a taxonomy hierarchy, + * unless a unique slug has been explicitly provided. + */ + $name_matches = get_terms( $taxonomy, array( + 'name' => $name, + 'hide_empty' => false, + ) ); - if ( $name === $existing_term->name ) { + /* + * The `name` match in `get_terms()` doesn't differentiate accented characters, + * so we do a stricter comparison here. + */ + $name_match = null; + if ( $name_matches ) { + foreach ( $name_matches as $_match ) { + if ( strtolower( $name ) === strtolower( $_match->name ) ) { + $name_match = $_match; + break; + } + } + } + if ( $name_match ) { + $slug_match = get_term_by( 'slug', $slug, $taxonomy ); + if ( ! $slug_provided || $name_match->slug === $slug || $slug_match ) { if ( is_taxonomy_hierarchical( $taxonomy ) ) { - $siblings = get_terms( $taxonomy, array( 'fields' => 'names', 'get' => 'all', 'parent' => $parent ) ); - if ( in_array( $name, $siblings ) ) { - return new WP_Error( 'term_exists', __( 'A term with the name and slug already exists with this parent.' ), $exists['term_id'] ); + $siblings = get_terms( $taxonomy, array( 'get' => 'all', 'parent' => $parent ) ); + + $existing_term = null; + if ( $name_match->slug === $slug && in_array( $name, wp_list_pluck( $siblings, 'name' ) ) ) { + $existing_term = $name_match; + } elseif ( $slug_match && in_array( $slug, wp_list_pluck( $siblings, 'slug' ) ) ) { + $existing_term = $slug_match; } + if ( $existing_term ) { + return new WP_Error( 'term_exists', __( 'A term with the name provided already exists with this parent.' ), $existing_term->term_id ); + } } else { - return new WP_Error( 'term_exists', __( 'A term with the name and slug already exists in this taxonomy.' ), $exists['term_id'] ); + return new WP_Error( 'term_exists', __( 'A term with the name provided already exists in this taxonomy.' ), $name_match->term_id ); } } } @@ -2927,13 +2740,19 @@ function wp_insert_term( $term, $taxonomy, $args = array() ) { * Fires after a new term is created, and after the term cache has been cleaned. * * @since 2.3.0 + * + * @param int $term_id Term ID. + * @param int $tt_id Term taxonomy ID. + * @param string $taxonomy Taxonomy slug. */ - do_action( "created_term", $term_id, $tt_id, $taxonomy ); + do_action( 'created_term', $term_id, $tt_id, $taxonomy ); /** * Fires after a new term in a specific taxonomy is created, and after the term * cache has been cleaned. * + * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. + * * @since 2.3.0 * * @param int $term_id Term ID. @@ -2957,10 +2776,12 @@ function wp_insert_term( $term, $taxonomy, $args = array() ) { * * @since 2.3.0 * + * @global wpdb $wpdb The WordPress database abstraction object. + * * @param int $object_id The object to relate to. * @param array|int|string $terms A single term slug, single term id, or array of either term slugs or ids. * Will replace all existing related terms in this taxonomy. - * @param array|string $taxonomy The context in which to relate the term to the object. + * @param string $taxonomy The context in which to relate the term to the object. * @param bool $append Optional. If false will delete difference of terms. Default false. * @return array|WP_Error Affected Term IDs. */ @@ -3080,9 +2901,9 @@ function wp_set_object_terms( $object_id, $terms, $taxonomy, $append = false ) { * * @since 3.6.0 * - * @param int $object_id The ID of the object to which the terms will be added. - * @param array|int|string $terms The slug(s) or ID(s) of the term(s) to add. - * @param array|string $taxonomy Taxonomy name. + * @param int $object_id The ID of the object to which the terms will be added. + * @param array|int|string $terms The slug(s) or ID(s) of the term(s) to add. + * @param array|string $taxonomy Taxonomy name. * @return array|WP_Error Affected Term IDs */ function wp_add_object_terms( $object_id, $terms, $taxonomy ) { @@ -3096,9 +2917,9 @@ function wp_add_object_terms( $object_id, $terms, $taxonomy ) { * * @global wpdb $wpdb WordPress database abstraction object. * - * @param int $object_id The ID of the object from which the terms will be removed. - * @param array|int|string $terms The slug(s) or ID(s) of the term(s) to remove. - * @param array|string $taxonomy Taxonomy name. + * @param int $object_id The ID of the object from which the terms will be removed. + * @param array|int|string $terms The slug(s) or ID(s) of the term(s) to remove. + * @param array|string $taxonomy Taxonomy name. * @return bool|WP_Error True on success, false or WP_Error on failure. */ function wp_remove_object_terms( $object_id, $terms, $taxonomy ) { @@ -3149,6 +2970,8 @@ function wp_remove_object_terms( $object_id, $terms, $taxonomy ) { do_action( 'delete_term_relationships', $object_id, $tt_ids ); $deleted = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id ) ); + wp_cache_delete( $object_id, $taxonomy . '_relationships' ); + /** * Fires immediately after an object-term relationship is deleted. * @@ -3158,6 +2981,7 @@ function wp_remove_object_terms( $object_id, $terms, $taxonomy ) { * @param array $tt_ids An array of term taxonomy IDs. */ do_action( 'deleted_term_relationships', $object_id, $tt_ids ); + wp_update_term_count( $tt_ids, $taxonomy ); return (bool) $deleted; @@ -3169,7 +2993,7 @@ function wp_remove_object_terms( $object_id, $terms, $taxonomy ) { /** * Will make slug unique, if it isn't already. * - * The $slug has to be unique global to every taxonomy, meaning that one + * The `$slug` has to be unique global to every taxonomy, meaning that one * taxonomy term can't have a matching slug with another taxonomy term. Each * slug has to be globally unique for every taxonomy. * @@ -3179,38 +3003,42 @@ function wp_remove_object_terms( $object_id, $terms, $taxonomy ) { * If that still doesn't return an unique slug, then it try to append a number * until it finds a number that is truly unique. * - * The only purpose for $term is for appending a parent, if one exists. + * The only purpose for `$term` is for appending a parent, if one exists. * * @since 2.3.0 * * @global wpdb $wpdb WordPress database abstraction object. * - * @param string $slug The string that will be tried for a unique slug - * @param object $term The term object that the $slug will belong too + * @param string $slug The string that will be tried for a unique slug. + * @param object $term The term object that the `$slug` will belong to. * @return string Will return a true unique slug. */ -function wp_unique_term_slug($slug, $term) { +function wp_unique_term_slug( $slug, $term ) { global $wpdb; - if ( ! term_exists( $slug ) ) - return $slug; + $needs_suffix = true; + $original_slug = $slug; // As of 4.1, duplicate slugs are allowed as long as they're in different taxonomies. - if ( get_option( 'db_version' ) >= 30133 && ! get_term_by( 'slug', $slug, $term->taxonomy ) ) { - return $slug; + if ( ! term_exists( $slug ) || get_option( 'db_version' ) >= 30133 && ! get_term_by( 'slug', $slug, $term->taxonomy ) ) { + $needs_suffix = false; } - // If the taxonomy supports hierarchy and the term has a parent, make the slug unique - // by incorporating parent slugs. - if ( is_taxonomy_hierarchical($term->taxonomy) && !empty($term->parent) ) { + /* + * If the taxonomy supports hierarchy and the term has a parent, make the slug unique + * by incorporating parent slugs. + */ + $parent_suffix = ''; + if ( $needs_suffix && is_taxonomy_hierarchical( $term->taxonomy ) && ! empty( $term->parent ) ) { $the_parent = $term->parent; while ( ! empty($the_parent) ) { $parent_term = get_term($the_parent, $term->taxonomy); if ( is_wp_error($parent_term) || empty($parent_term) ) break; - $slug .= '-' . $parent_term->slug; - if ( ! term_exists( $slug ) ) - return $slug; + $parent_suffix .= '-' . $parent_term->slug; + if ( ! term_exists( $slug . $parent_suffix ) ) { + break; + } if ( empty($parent_term->parent) ) break; @@ -3219,22 +3047,47 @@ function wp_unique_term_slug($slug, $term) { } // If we didn't get a unique slug, try appending a number to make it unique. - if ( ! empty( $term->term_id ) ) - $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s AND term_id != %d", $slug, $term->term_id ); - else - $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $slug ); - if ( $wpdb->get_var( $query ) ) { - $num = 2; - do { - $alt_slug = $slug . "-$num"; - $num++; - $slug_check = $wpdb->get_var( $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $alt_slug ) ); - } while ( $slug_check ); - $slug = $alt_slug; + /** + * Filter whether the proposed unique term slug is bad. + * + * @since 4.3.0 + * + * @param bool $needs_suffix Whether the slug needs to be made unique with a suffix. + * @param string $slug The slug. + * @param object $term Term object. + */ + if ( apply_filters( 'wp_unique_term_slug_is_bad_slug', $needs_suffix, $slug, $term ) ) { + if ( $parent_suffix ) { + $slug .= $parent_suffix; + } else { + if ( ! empty( $term->term_id ) ) + $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s AND term_id != %d", $slug, $term->term_id ); + else + $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $slug ); + + if ( $wpdb->get_var( $query ) ) { + $num = 2; + do { + $alt_slug = $slug . "-$num"; + $num++; + $slug_check = $wpdb->get_var( $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $alt_slug ) ); + } while ( $slug_check ); + $slug = $alt_slug; + } + } } - return $slug; + /** + * Filter the unique term slug. + * + * @since 4.3.0 + * + * @param string $slug Unique term slug. + * @param object $term Term object. + * @param string $original_slug Slug originally passed to the function for testing. + */ + return apply_filters( 'wp_unique_term_slug', $slug, $term, $original_slug ); } /** @@ -3255,34 +3108,42 @@ function wp_unique_term_slug($slug, $term) { * a WP_Error will be passed back. If you don't pass any slug, then a unique one * will be created for you. * - * For what can be overrode in $args, check the term scheme can contain and stay + * For what can be overrode in `$args`, check the term scheme can contain and stay * away from the term keys. * * @since 2.3.0 * * @global wpdb $wpdb WordPress database abstraction object. * - * @param int $term_id The ID of the term - * @param string $taxonomy The context in which to relate the term to the object. - * @param array|string $args Overwrite term field values + * @param int $term_id The ID of the term + * @param string $taxonomy The context in which to relate the term to the object. + * @param array|string $args Optional. Array of get_terms() arguments. Default empty array. * @return array|WP_Error Returns Term ID and Taxonomy Term ID */ function wp_update_term( $term_id, $taxonomy, $args = array() ) { global $wpdb; - if ( ! taxonomy_exists($taxonomy) ) - return new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); + if ( ! taxonomy_exists( $taxonomy ) ) { + return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy' ) ); + } $term_id = (int) $term_id; // First, get all of the original args - $term = get_term ($term_id, $taxonomy, ARRAY_A); + $term = get_term( $term_id, $taxonomy ); - if ( is_wp_error( $term ) ) + if ( is_wp_error( $term ) ) { return $term; + } + + if ( ! $term ) { + return new WP_Error( 'invalid_term', __( 'Empty Term' ) ); + } + + $term = (array) $term->data; // Escape data pulled from DB. - $term = wp_slash($term); + $term = wp_slash( $term ); // Merge old and new args with new args overwriting old ones. $args = array_merge($term, $args); @@ -3322,7 +3183,7 @@ function wp_update_term( $term_id, $taxonomy, $args = array() ) { if ( ! empty( $alias->term_group ) ) { // The alias we want is already in a group, so let's use that one. $term_group = $alias->term_group; - } else if ( ! empty( $alias->term_id ) ) { + } elseif ( ! empty( $alias->term_id ) ) { /* * The alias is not in a group, so we create a new one * and add the alias to it. @@ -3363,7 +3224,13 @@ function wp_update_term( $term_id, $taxonomy, $args = array() ) { return new WP_Error('duplicate_term_slug', sprintf(__('The slug “%s” is already in use by another term'), $slug)); } - $tt_id = $wpdb->get_var( $wpdb->prepare( "SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.term_id = %d", $taxonomy, $term_id) ); + $tt_id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.term_id = %d", $taxonomy, $term_id) ); + + // Check whether this is a shared term that needs splitting. + $_term_id = _split_shared_term( $term_id, $tt_id ); + if ( ! is_wp_error( $_term_id ) ) { + $term_id = $_term_id; + } /** * Fires immediately before the given terms are edited. @@ -3399,6 +3266,7 @@ function wp_update_term( $term_id, $taxonomy, $args = array() ) { * @param string $taxonomy Taxonomy slug. */ do_action( 'edit_term_taxonomy', $tt_id, $taxonomy ); + $wpdb->update( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ), array( 'term_taxonomy_id' => $tt_id ) ); /** @@ -3411,7 +3279,7 @@ function wp_update_term( $term_id, $taxonomy, $args = array() ) { */ do_action( 'edited_term_taxonomy', $tt_id, $taxonomy ); - // Clean the relationship caches for all object types using this term + // Clean the relationship caches for all object types using this term. $objects = $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $tt_id ) ); $tax_object = get_taxonomy( $taxonomy ); foreach ( $tax_object->object_type as $object_type ) { @@ -3479,6 +3347,8 @@ function wp_update_term( $term_id, $taxonomy, $args = array() ) { * * @since 2.5.0 * + * @staticvar bool $_defer + * * @param bool $defer Optional. Enable if true, disable if false. * @return bool Whether term counting is enabled or disabled. */ @@ -3506,10 +3376,10 @@ function wp_defer_term_counting($defer=null) { * * @since 2.3.0 * - * @global wpdb $wpdb WordPress database abstraction object. + * @staticvar array $_deferred * - * @param int|array $terms The term_taxonomy_id of the terms - * @param string $taxonomy The context of the term. + * @param int|array $terms The term_taxonomy_id of the terms. + * @param string $taxonomy The context of the term. * @return bool If no terms will return false, and if successful will return true. */ function wp_update_term_count( $terms, $taxonomy, $do_deferred=false ) { @@ -3543,9 +3413,9 @@ function wp_update_term_count( $terms, $taxonomy, $do_deferred=false ) { * * @since 2.5.0 * - * @param array $terms The term_taxonomy_id of terms to update. + * @param array $terms The term_taxonomy_id of terms to update. * @param string $taxonomy The context of the term. - * @return bool Always true when complete. + * @return true Always true when complete. */ function wp_update_term_count_now( $terms, $taxonomy ) { $terms = array_map('intval', $terms); @@ -3581,16 +3451,16 @@ function wp_update_term_count_now( $terms, $taxonomy ) { /** * Removes the taxonomy relationship to terms from the cache. * - * Will remove the entire taxonomy relationship containing term $object_id. The - * term IDs have to exist within the taxonomy $object_type for the deletion to + * Will remove the entire taxonomy relationship containing term `$object_id`. The + * term IDs have to exist within the taxonomy `$object_type` for the deletion to * take place. * * @since 2.3.0 * - * @see get_object_taxonomies() for more on $object_type + * @see get_object_taxonomies() for more on $object_type. * - * @param int|array $object_ids Single or list of term object ID(s) - * @param array|string $object_type The taxonomy object type + * @param int|array $object_ids Single or list of term object ID(s). + * @param array|string $object_type The taxonomy object type. */ function clean_object_term_cache($object_ids, $object_type) { if ( !is_array($object_ids) ) @@ -3621,13 +3491,20 @@ function clean_object_term_cache($object_ids, $object_type) { * @since 2.3.0 * * @global wpdb $wpdb WordPress database abstraction object. + * @global bool $_wp_suspend_cache_invalidation * - * @param int|array $ids Single or list of Term IDs - * @param string $taxonomy Can be empty and will assume tt_ids, else will use for context. - * @param bool $clean_taxonomy Whether to clean taxonomy wide caches (true), or just individual term object caches (false). Default is true. + * @param int|array $ids Single or list of Term IDs. + * @param string $taxonomy Optional. Can be empty and will assume `tt_ids`, else will use for context. + * Default empty. + * @param bool $clean_taxonomy Optional. Whether to clean taxonomy wide caches (true), or just individual + * term object caches (false). Default true. */ function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) { - global $wpdb; + global $wpdb, $_wp_suspend_cache_invalidation; + + if ( ! empty( $_wp_suspend_cache_invalidation ) ) { + return; + } if ( !is_array($ids) ) $ids = array($ids); @@ -3642,14 +3519,14 @@ function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) { foreach ( (array) $terms as $term ) { $taxonomies[] = $term->taxonomy; $ids[] = $term->term_id; - wp_cache_delete($term->term_id, $term->taxonomy); + wp_cache_delete( $term->term_id, 'terms' ); } $taxonomies = array_unique($taxonomies); } else { $taxonomies = array($taxonomy); foreach ( $taxonomies as $taxonomy ) { foreach ( $ids as $id ) { - wp_cache_delete($id, $taxonomy); + wp_cache_delete( $id, 'terms' ); } } } @@ -3682,33 +3559,30 @@ function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) { * * @since 2.3.0 * - * @param int|array $id Term object ID - * @param string $taxonomy Taxonomy Name - * @return bool|array Empty array if $terms found, but not $taxonomy. False if nothing is in cache for $taxonomy and $id. + * @param int $id Term object ID. + * @param string $taxonomy Taxonomy name. + * @return bool|mixed Empty array if $terms found, but not `$taxonomy`. False if nothing is in cache + * for `$taxonomy` and `$id`. */ -function get_object_term_cache($id, $taxonomy) { - $cache = wp_cache_get($id, "{$taxonomy}_relationships"); - return $cache; +function get_object_term_cache( $id, $taxonomy ) { + return wp_cache_get( $id, "{$taxonomy}_relationships" ); } /** - * Updates the cache for Term ID(s). + * Updates the cache for the given term object ID(s). * - * Will only update the cache for terms not already cached. + * Note: Due to performance concerns, great care should be taken to only update + * term caches when necessary. Processing time can increase exponentially depending + * on both the number of passed term IDs and the number of taxonomies those terms + * belong to. * - * The $object_ids expects that the ids be separated by commas, if it is a - * string. - * - * It should be noted that update_object_term_cache() is very time extensive. It - * is advised that the function is not called very often or at least not for a - * lot of terms that exist in a lot of taxonomies. The amount of time increases - * for each term and it also increases for each taxonomy the term belongs to. + * Caches will only be updated for terms not already cached. * * @since 2.3.0 * - * @param string|array $object_ids Single or list of term object ID(s) - * @param array|string $object_type The taxonomy object type - * @return null|false Null value is given with empty $object_ids. False if + * @param string|array $object_ids Comma-separated list or array of term object IDs. + * @param array|string $object_type The taxonomy object type. + * @return void|false False if all of the terms in `$object_ids` are already cached. */ function update_object_term_cache($object_ids, $object_type) { if ( empty($object_ids) ) @@ -3734,11 +3608,15 @@ function update_object_term_cache($object_ids, $object_type) { if ( empty( $ids ) ) return false; - $terms = wp_get_object_terms($ids, $taxonomies, array('fields' => 'all_with_object_id')); + $terms = wp_get_object_terms( $ids, $taxonomies, array( + 'fields' => 'all_with_object_id', + 'orderby' => 'name', + 'update_term_meta_cache' => false, + ) ); $object_terms = array(); foreach ( (array) $terms as $term ) - $object_terms[$term->object_id][$term->taxonomy][$term->term_id] = $term; + $object_terms[$term->object_id][$term->taxonomy][] = $term; foreach ( $ids as $id ) { foreach ( $taxonomies as $taxonomy ) { @@ -3762,16 +3640,18 @@ function update_object_term_cache($object_ids, $object_type) { * * @since 2.3.0 * - * @param array $terms List of Term objects to change - * @param string $taxonomy Optional. Update Term to this taxonomy in cache + * @param array $terms List of term objects to change. + * @param string $taxonomy Optional. Update Term to this taxonomy in cache. Default empty. */ -function update_term_cache($terms, $taxonomy = '') { +function update_term_cache( $terms, $taxonomy = '' ) { foreach ( (array) $terms as $term ) { - $term_taxonomy = $taxonomy; - if ( empty($term_taxonomy) ) - $term_taxonomy = $term->taxonomy; + // Create a copy in case the array was passed by reference. + $_term = clone $term; - wp_cache_add( $term->term_id, $term, $term_taxonomy ); + // Object ID should not be cached. + unset( $_term->object_id ); + + wp_cache_add( $term->term_id, $_term, 'terms' ); } } @@ -3782,13 +3662,13 @@ function update_term_cache($terms, $taxonomy = '') { /** * Retrieves children of taxonomy as Term IDs. * - * @access private + * @ignore * @since 2.3.0 * - * @param string $taxonomy Taxonomy Name + * @param string $taxonomy Taxonomy name. * @return array Empty if $taxonomy isn't hierarchical or returns children as Term IDs. */ -function _get_term_hierarchy($taxonomy) { +function _get_term_hierarchy( $taxonomy ) { if ( !is_taxonomy_hierarchical($taxonomy) ) return array(); $children = get_option("{$taxonomy}_children"); @@ -3809,18 +3689,23 @@ function _get_term_hierarchy($taxonomy) { /** * Get the subset of $terms that are descendants of $term_id. * - * If $terms is an array of objects, then _get_term_children returns an array of objects. - * If $terms is an array of IDs, then _get_term_children returns an array of IDs. + * If `$terms` is an array of objects, then _get_term_children() returns an array of objects. + * If `$terms` is an array of IDs, then _get_term_children() returns an array of IDs. * * @access private * @since 2.3.0 * - * @param int $term_id The ancestor term: all returned terms should be descendants of $term_id. - * @param array $terms The set of terms---either an array of term objects or term IDs---from which those that are descendants of $term_id will be chosen. - * @param string $taxonomy The taxonomy which determines the hierarchy of the terms. - * @return array The subset of $terms that are descendants of $term_id. + * @param int $term_id The ancestor term: all returned terms should be descendants of `$term_id`. + * @param array $terms The set of terms - either an array of term objects or term IDs - from which those that + * are descendants of $term_id will be chosen. + * @param string $taxonomy The taxonomy which determines the hierarchy of the terms. + * @param array $ancestors Optional. Term ancestors that have already been identified. Passed by reference, to keep + * track of found terms when recursing the hierarchy. The array of located ancestors is used + * to prevent infinite recursion loops. For performance, `term_ids` are used as array keys, + * with 1 as value. Default empty array. + * @return array|WP_Error The subset of $terms that are descendants of $term_id. */ -function _get_term_children($term_id, $terms, $taxonomy) { +function _get_term_children( $term_id, $terms, $taxonomy, &$ancestors = array() ) { $empty_array = array(); if ( empty($terms) ) return $empty_array; @@ -3831,6 +3716,11 @@ function _get_term_children($term_id, $terms, $taxonomy) { if ( ( 0 != $term_id ) && ! isset($has_children[$term_id]) ) return $empty_array; + // Include the term itself in the ancestors array, so we can properly detect when a loop has occurred. + if ( empty( $ancestors ) ) { + $ancestors[ $term_id ] = 1; + } + foreach ( (array) $terms as $term ) { $use_id = false; if ( !is_object($term) ) { @@ -3840,7 +3730,8 @@ function _get_term_children($term_id, $terms, $taxonomy) { $use_id = true; } - if ( $term->term_id == $term_id ) { + // Don't recurse if we've already identified the term as a child - this indicates a loop. + if ( isset( $ancestors[ $term->term_id ] ) ) { continue; } @@ -3853,7 +3744,9 @@ function _get_term_children($term_id, $terms, $taxonomy) { if ( !isset($has_children[$term->term_id]) ) continue; - if ( $children = _get_term_children($term->term_id, $terms, $taxonomy) ) + $ancestors[ $term->term_id ] = 1; + + if ( $children = _get_term_children( $term->term_id, $terms, $taxonomy, $ancestors) ) $term_list = array_merge($term_list, $children); } } @@ -3872,11 +3765,10 @@ function _get_term_children($term_id, $terms, $taxonomy) { * * @global wpdb $wpdb WordPress database abstraction object. * - * @param array $terms List of Term IDs - * @param string $taxonomy Term Context - * @return null Will break from function if conditions are not met. + * @param array $terms List of term objects, passed by reference. + * @param string $taxonomy Term context. */ -function _pad_term_counts(&$terms, $taxonomy) { +function _pad_term_counts( &$terms, $taxonomy ) { global $wpdb; // This function only works for hierarchical taxonomies like post categories. @@ -3889,13 +3781,15 @@ function _pad_term_counts(&$terms, $taxonomy) { return; $term_items = array(); + $terms_by_id = array(); + $term_ids = array(); foreach ( (array) $terms as $key => $term ) { $terms_by_id[$term->term_id] = & $terms[$key]; $term_ids[$term->term_taxonomy_id] = $term->term_id; } - // Get the object and term ids and stick them in a lookup table + // Get the object and term ids and stick them in a lookup table. $tax_obj = get_taxonomy($taxonomy); $object_types = esc_sql($tax_obj->object_type); $results = $wpdb->get_results("SELECT object_id, term_taxonomy_id FROM $wpdb->term_relationships INNER JOIN $wpdb->posts ON object_id = ID WHERE term_taxonomy_id IN (" . implode(',', array_keys($term_ids)) . ") AND post_type IN ('" . implode("', '", $object_types) . "') AND post_status = 'publish'"); @@ -3904,19 +3798,25 @@ function _pad_term_counts(&$terms, $taxonomy) { $term_items[$id][$row->object_id] = isset($term_items[$id][$row->object_id]) ? ++$term_items[$id][$row->object_id] : 1; } - // Touch every ancestor's lookup row for each post in each term + // Touch every ancestor's lookup row for each post in each term. foreach ( $term_ids as $term_id ) { $child = $term_id; + $ancestors = array(); while ( !empty( $terms_by_id[$child] ) && $parent = $terms_by_id[$child]->parent ) { + $ancestors[] = $child; if ( !empty( $term_items[$term_id] ) ) foreach ( $term_items[$term_id] as $item_id => $touches ) { $term_items[$parent][$item_id] = isset($term_items[$parent][$item_id]) ? ++$term_items[$parent][$item_id]: 1; } $child = $parent; + + if ( in_array( $parent, $ancestors ) ) { + break; + } } } - // Transfer the touched cells + // Transfer the touched cells. foreach ( (array) $term_items as $id => $items ) if ( isset($terms_by_id[$id]) ) $terms_by_id[$id]->count = count($items); @@ -3937,8 +3837,8 @@ function _pad_term_counts(&$terms, $taxonomy) { * * @global wpdb $wpdb WordPress database abstraction object. * - * @param array $terms List of Term taxonomy IDs - * @param object $taxonomy Current taxonomy object of terms + * @param array $terms List of Term taxonomy IDs. + * @param object $taxonomy Current taxonomy object of terms. */ function _update_post_term_count( $terms, $taxonomy ) { global $wpdb; @@ -3961,7 +3861,7 @@ function _update_post_term_count( $terms, $taxonomy ) { foreach ( (array) $terms as $term ) { $count = 0; - // Attachments can be 'inherit' status, we need to base count off the parent's status if so + // Attachments can be 'inherit' status, we need to base count off the parent's status if so. if ( $check_attachments ) $count += (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships, $wpdb->posts p1 WHERE p1.ID = $wpdb->term_relationships.object_id AND ( post_status = 'publish' OR ( post_status = 'inherit' AND post_parent > 0 AND ( SELECT post_status FROM $wpdb->posts WHERE ID = p1.post_parent ) = 'publish' ) ) AND post_type = 'attachment' AND term_taxonomy_id = %d", $term ) ); @@ -3969,25 +3869,25 @@ function _update_post_term_count( $terms, $taxonomy ) { $count += (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships, $wpdb->posts WHERE $wpdb->posts.ID = $wpdb->term_relationships.object_id AND post_status = 'publish' AND post_type IN ('" . implode("', '", $object_types ) . "') AND term_taxonomy_id = %d", $term ) ); /** This action is documented in wp-includes/taxonomy.php */ - do_action( 'edit_term_taxonomy', $term, $taxonomy ); + do_action( 'edit_term_taxonomy', $term, $taxonomy->name ); $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); /** This action is documented in wp-includes/taxonomy.php */ - do_action( 'edited_term_taxonomy', $term, $taxonomy ); + do_action( 'edited_term_taxonomy', $term, $taxonomy->name ); } } /** * Will update term count based on number of objects. * - * Default callback for the link_category taxonomy. + * Default callback for the 'link_category' taxonomy. * * @since 3.3.0 * * @global wpdb $wpdb WordPress database abstraction object. * - * @param array $terms List of Term taxonomy IDs - * @param object $taxonomy Current taxonomy object of terms + * @param array $terms List of term taxonomy IDs. + * @param object $taxonomy Current taxonomy object of terms. */ function _update_generic_term_count( $terms, $taxonomy ) { global $wpdb; @@ -3996,12 +3896,407 @@ function _update_generic_term_count( $terms, $taxonomy ) { $count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $term ) ); /** This action is documented in wp-includes/taxonomy.php */ - do_action( 'edit_term_taxonomy', $term, $taxonomy ); + do_action( 'edit_term_taxonomy', $term, $taxonomy->name ); $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); /** This action is documented in wp-includes/taxonomy.php */ - do_action( 'edited_term_taxonomy', $term, $taxonomy ); + do_action( 'edited_term_taxonomy', $term, $taxonomy->name ); + } +} + +/** + * Create a new term for a term_taxonomy item that currently shares its term + * with another term_taxonomy. + * + * @ignore + * @since 4.2.0 + * @since 4.3.0 Introduced `$record` parameter. Also, `$term_id` and + * `$term_taxonomy_id` can now accept objects. + * + * @global wpdb $wpdb WordPress database abstraction object. + * + * @param int|object $term_id ID of the shared term, or the shared term object. + * @param int|object $term_taxonomy_id ID of the term_taxonomy item to receive a new term, or the term_taxonomy object + * (corresponding to a row from the term_taxonomy table). + * @param bool $record Whether to record data about the split term in the options table. The recording + * process has the potential to be resource-intensive, so during batch operations + * it can be beneficial to skip inline recording and do it just once, after the + * batch is processed. Only set this to `false` if you know what you are doing. + * Default: true. + * @return int|WP_Error When the current term does not need to be split (or cannot be split on the current + * database schema), `$term_id` is returned. When the term is successfully split, the + * new term_id is returned. A WP_Error is returned for miscellaneous errors. + */ +function _split_shared_term( $term_id, $term_taxonomy_id, $record = true ) { + global $wpdb; + + if ( is_object( $term_id ) ) { + $shared_term = $term_id; + $term_id = intval( $shared_term->term_id ); + } + + if ( is_object( $term_taxonomy_id ) ) { + $term_taxonomy = $term_taxonomy_id; + $term_taxonomy_id = intval( $term_taxonomy->term_taxonomy_id ); + } + + // If there are no shared term_taxonomy rows, there's nothing to do here. + $shared_tt_count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy tt WHERE tt.term_id = %d AND tt.term_taxonomy_id != %d", $term_id, $term_taxonomy_id ) ); + + if ( ! $shared_tt_count ) { + return $term_id; + } + + /* + * Verify that the term_taxonomy_id passed to the function is actually associated with the term_id. + * If there's a mismatch, it may mean that the term is already split. Return the actual term_id from the db. + */ + $check_term_id = $wpdb->get_var( $wpdb->prepare( "SELECT term_id FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $term_taxonomy_id ) ); + if ( $check_term_id != $term_id ) { + return $check_term_id; + } + + // Pull up data about the currently shared slug, which we'll use to populate the new one. + if ( empty( $shared_term ) ) { + $shared_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.* FROM $wpdb->terms t WHERE t.term_id = %d", $term_id ) ); + } + + $new_term_data = array( + 'name' => $shared_term->name, + 'slug' => $shared_term->slug, + 'term_group' => $shared_term->term_group, + ); + + if ( false === $wpdb->insert( $wpdb->terms, $new_term_data ) ) { + return new WP_Error( 'db_insert_error', __( 'Could not split shared term.' ), $wpdb->last_error ); + } + + $new_term_id = (int) $wpdb->insert_id; + + // Update the existing term_taxonomy to point to the newly created term. + $wpdb->update( $wpdb->term_taxonomy, + array( 'term_id' => $new_term_id ), + array( 'term_taxonomy_id' => $term_taxonomy_id ) + ); + + // Reassign child terms to the new parent. + if ( empty( $term_taxonomy ) ) { + $term_taxonomy = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $term_taxonomy_id ) ); + } + + $children_tt_ids = $wpdb->get_col( $wpdb->prepare( "SELECT term_taxonomy_id FROM $wpdb->term_taxonomy WHERE parent = %d AND taxonomy = %s", $term_id, $term_taxonomy->taxonomy ) ); + if ( ! empty( $children_tt_ids ) ) { + foreach ( $children_tt_ids as $child_tt_id ) { + $wpdb->update( $wpdb->term_taxonomy, + array( 'parent' => $new_term_id ), + array( 'term_taxonomy_id' => $child_tt_id ) + ); + clean_term_cache( $term_id, $term_taxonomy->taxonomy ); + } + } else { + // If the term has no children, we must force its taxonomy cache to be rebuilt separately. + clean_term_cache( $new_term_id, $term_taxonomy->taxonomy ); + } + + // Clean the cache for term taxonomies formerly shared with the current term. + $shared_term_taxonomies = $wpdb->get_row( $wpdb->prepare( "SELECT taxonomy FROM $wpdb->term_taxonomy WHERE term_id = %d", $term_id ) ); + if ( $shared_term_taxonomies ) { + foreach ( $shared_term_taxonomies as $shared_term_taxonomy ) { + clean_term_cache( $term_id, $shared_term_taxonomy ); + } + } + + // Keep a record of term_ids that have been split, keyed by old term_id. See {@see wp_get_split_term()}. + if ( $record ) { + $split_term_data = get_option( '_split_terms', array() ); + if ( ! isset( $split_term_data[ $term_id ] ) ) { + $split_term_data[ $term_id ] = array(); + } + + $split_term_data[ $term_id ][ $term_taxonomy->taxonomy ] = $new_term_id; + update_option( '_split_terms', $split_term_data ); + } + + // If we've just split the final shared term, set the "finished" flag. + $shared_terms_exist = $wpdb->get_results( + "SELECT tt.term_id, t.*, count(*) as term_tt_count FROM {$wpdb->term_taxonomy} tt + LEFT JOIN {$wpdb->terms} t ON t.term_id = tt.term_id + GROUP BY t.term_id + HAVING term_tt_count > 1 + LIMIT 1" + ); + if ( ! $shared_terms_exist ) { + update_option( 'finished_splitting_shared_terms', true ); + } + + /** + * Fires after a previously shared taxonomy term is split into two separate terms. + * + * @since 4.2.0 + * + * @param int $term_id ID of the formerly shared term. + * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. + * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. + * @param string $taxonomy Taxonomy for the split term. + */ + do_action( 'split_shared_term', $term_id, $new_term_id, $term_taxonomy_id, $term_taxonomy->taxonomy ); + + return $new_term_id; +} + +/** + * Splits a batch of shared taxonomy terms. + * + * @since 4.3.0 + * + * @global wpdb $wpdb WordPress database abstraction object. + */ +function _wp_batch_split_terms() { + global $wpdb; + + $lock_name = 'term_split.lock'; + + // Try to lock. + $lock_result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'no') /* LOCK */", $lock_name, time() ) ); + + if ( ! $lock_result ) { + $lock_result = get_option( $lock_name ); + + // Bail if we were unable to create a lock, or if the existing lock is still valid. + if ( ! $lock_result || ( $lock_result > ( time() - HOUR_IN_SECONDS ) ) ) { + wp_schedule_single_event( time() + ( 5 * MINUTE_IN_SECONDS ), 'wp_split_shared_term_batch' ); + return; + } + } + + // Update the lock, as by this point we've definitely got a lock, just need to fire the actions. + update_option( $lock_name, time() ); + + // Get a list of shared terms (those with more than one associated row in term_taxonomy). + $shared_terms = $wpdb->get_results( + "SELECT tt.term_id, t.*, count(*) as term_tt_count FROM {$wpdb->term_taxonomy} tt + LEFT JOIN {$wpdb->terms} t ON t.term_id = tt.term_id + GROUP BY t.term_id + HAVING term_tt_count > 1 + LIMIT 10" + ); + + // No more terms, we're done here. + if ( ! $shared_terms ) { + update_option( 'finished_splitting_shared_terms', true ); + delete_option( $lock_name ); + return; + } + + // Shared terms found? We'll need to run this script again. + wp_schedule_single_event( time() + ( 2 * MINUTE_IN_SECONDS ), 'wp_split_shared_term_batch' ); + + // Rekey shared term array for faster lookups. + $_shared_terms = array(); + foreach ( $shared_terms as $shared_term ) { + $term_id = intval( $shared_term->term_id ); + $_shared_terms[ $term_id ] = $shared_term; + } + $shared_terms = $_shared_terms; + + // Get term taxonomy data for all shared terms. + $shared_term_ids = implode( ',', array_keys( $shared_terms ) ); + $shared_tts = $wpdb->get_results( "SELECT * FROM {$wpdb->term_taxonomy} WHERE `term_id` IN ({$shared_term_ids})" ); + + // Split term data recording is slow, so we do it just once, outside the loop. + $split_term_data = get_option( '_split_terms', array() ); + $skipped_first_term = $taxonomies = array(); + foreach ( $shared_tts as $shared_tt ) { + $term_id = intval( $shared_tt->term_id ); + + // Don't split the first tt belonging to a given term_id. + if ( ! isset( $skipped_first_term[ $term_id ] ) ) { + $skipped_first_term[ $term_id ] = 1; + continue; + } + + if ( ! isset( $split_term_data[ $term_id ] ) ) { + $split_term_data[ $term_id ] = array(); + } + + // Keep track of taxonomies whose hierarchies need flushing. + if ( ! isset( $taxonomies[ $shared_tt->taxonomy ] ) ) { + $taxonomies[ $shared_tt->taxonomy ] = 1; + } + + // Split the term. + $split_term_data[ $term_id ][ $shared_tt->taxonomy ] = _split_shared_term( $shared_terms[ $term_id ], $shared_tt, false ); + } + + // Rebuild the cached hierarchy for each affected taxonomy. + foreach ( array_keys( $taxonomies ) as $tax ) { + delete_option( "{$tax}_children" ); + _get_term_hierarchy( $tax ); + } + + update_option( '_split_terms', $split_term_data ); + + delete_option( $lock_name ); +} + +/** + * In order to avoid the _wp_batch_split_terms() job being accidentally removed, + * check that it's still scheduled while we haven't finished splitting terms. + * + * @ignore + * @since 4.3.0 + */ +function _wp_check_for_scheduled_split_terms() { + if ( ! get_option( 'finished_splitting_shared_terms' ) && ! wp_next_scheduled( 'wp_split_shared_term_batch' ) ) { + wp_schedule_single_event( time() + MINUTE_IN_SECONDS, 'wp_split_shared_term_batch' ); + } +} + +/** + * Check default categories when a term gets split to see if any of them need to be updated. + * + * @ignore + * @since 4.2.0 + * + * @param int $term_id ID of the formerly shared term. + * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. + * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. + * @param string $taxonomy Taxonomy for the split term. + */ +function _wp_check_split_default_terms( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) { + if ( 'category' != $taxonomy ) { + return; + } + + foreach ( array( 'default_category', 'default_link_category', 'default_email_category' ) as $option ) { + if ( $term_id == get_option( $option, -1 ) ) { + update_option( $option, $new_term_id ); + } + } +} + +/** + * Check menu items when a term gets split to see if any of them need to be updated. + * + * @ignore + * @since 4.2.0 + * + * @global wpdb $wpdb WordPress database abstraction object. + * + * @param int $term_id ID of the formerly shared term. + * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. + * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. + * @param string $taxonomy Taxonomy for the split term. + */ +function _wp_check_split_terms_in_menus( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) { + global $wpdb; + $post_ids = $wpdb->get_col( $wpdb->prepare( + "SELECT m1.post_id + FROM {$wpdb->postmeta} AS m1 + INNER JOIN {$wpdb->postmeta} AS m2 ON ( m2.post_id = m1.post_id ) + INNER JOIN {$wpdb->postmeta} AS m3 ON ( m3.post_id = m1.post_id ) + WHERE ( m1.meta_key = '_menu_item_type' AND m1.meta_value = 'taxonomy' ) + AND ( m2.meta_key = '_menu_item_object' AND m2.meta_value = '%s' ) + AND ( m3.meta_key = '_menu_item_object_id' AND m3.meta_value = %d )", + $taxonomy, + $term_id + ) ); + + if ( $post_ids ) { + foreach ( $post_ids as $post_id ) { + update_post_meta( $post_id, '_menu_item_object_id', $new_term_id, $term_id ); + } + } +} + +/** + * If the term being split is a nav_menu, change associations. + * + * @ignore + * @since 4.3.0 + * + * @param int $term_id ID of the formerly shared term. + * @param int $new_term_id ID of the new term created for the $term_taxonomy_id. + * @param int $term_taxonomy_id ID for the term_taxonomy row affected by the split. + * @param string $taxonomy Taxonomy for the split term. + */ +function _wp_check_split_nav_menu_terms( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) { + if ( 'nav_menu' !== $taxonomy ) { + return; + } + + // Update menu locations. + $locations = get_nav_menu_locations(); + foreach ( $locations as $location => $menu_id ) { + if ( $term_id == $menu_id ) { + $locations[ $location ] = $new_term_id; + } + } + set_theme_mod( 'nav_menu_locations', $locations ); +} + +/** + * Get data about terms that previously shared a single term_id, but have since been split. + * + * @since 4.2.0 + * + * @param int $old_term_id Term ID. This is the old, pre-split term ID. + * @return array Array of new term IDs, keyed by taxonomy. + */ +function wp_get_split_terms( $old_term_id ) { + $split_terms = get_option( '_split_terms', array() ); + + $terms = array(); + if ( isset( $split_terms[ $old_term_id ] ) ) { + $terms = $split_terms[ $old_term_id ]; + } + + return $terms; +} + +/** + * Get the new term ID corresponding to a previously split term. + * + * @since 4.2.0 + * + * @param int $old_term_id Term ID. This is the old, pre-split term ID. + * @param string $taxonomy Taxonomy that the term belongs to. + * @return int|false If a previously split term is found corresponding to the old term_id and taxonomy, + * the new term_id will be returned. If no previously split term is found matching + * the parameters, returns false. + */ +function wp_get_split_term( $old_term_id, $taxonomy ) { + $split_terms = wp_get_split_terms( $old_term_id ); + + $term_id = false; + if ( isset( $split_terms[ $taxonomy ] ) ) { + $term_id = (int) $split_terms[ $taxonomy ]; + } + + return $term_id; +} + +/** + * Determine whether a term is shared between multiple taxonomies. + * + * Shared taxonomy terms began to be split in 4.3, but failed cron tasks or other delays in upgrade routines may cause + * shared terms to remain. + * + * @since 4.4.0 + * + * @param int $term_id + * @return bool + */ +function wp_term_is_shared( $term_id ) { + global $wpdb; + + if ( get_option( 'finished_splitting_shared_terms' ) ) { + return false; } + + $tt_count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_taxonomy WHERE term_id = %d", $term_id ) ); + + return $tt_count > 1; } /** @@ -4009,18 +4304,20 @@ function _update_generic_term_count( $terms, $taxonomy ) { * * @since 2.5.0 * + * @global WP_Rewrite $wp_rewrite + * * @param object|int|string $term The term object, ID, or slug whose link will be retrieved. * @param string $taxonomy Optional. Taxonomy. Default empty. * @return string|WP_Error HTML link to taxonomy term archive on success, WP_Error if term does not exist. */ -function get_term_link( $term, $taxonomy = '') { +function get_term_link( $term, $taxonomy = '' ) { global $wp_rewrite; if ( !is_object($term) ) { - if ( is_int($term) ) { - $term = get_term($term, $taxonomy); + if ( is_int( $term ) ) { + $term = get_term( $term, $taxonomy ); } else { - $term = get_term_by('slug', $term, $taxonomy); + $term = get_term_by( 'slug', $term, $taxonomy ); } } @@ -4110,8 +4407,8 @@ function get_term_link( $term, $taxonomy = '') { * @since 2.5.0 * * @param array $args { - * Arguments about which post to use and how to format the output. Shares all of the arguments supported by - * {@link get_the_taxonomies()}, in addition to the following. + * Arguments about which post to use and how to format the output. Shares all of the arguments + * supported by get_the_taxonomies(), in addition to the following. * * @type int|WP_Post $post Post ID or object to get taxonomies of. Default current post. * @type string $before Displays before the taxonomies. Default empty string. @@ -4143,7 +4440,7 @@ function the_taxonomies( $args = array() ) { * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. * @param array $args { - * Arguments about how to format the list of taxonomies. + * Optional. Arguments about how to format the list of taxonomies. Default empty array. * * @type string $template Template for displaying a taxonomy label and list of terms. * Default is "Label: Terms." @@ -4221,18 +4518,20 @@ function get_post_taxonomies( $post = 0 ) { * * @since 2.7.0 * - * @param int $object_id ID of the object (post ID, link ID, ...) - * @param string $taxonomy Single taxonomy name - * @param int|string|array $terms Optional. Term term_id, name, slug or array of said - * @return bool|WP_Error. WP_Error on input error. + * @param int $object_id ID of the object (post ID, link ID, ...). + * @param string $taxonomy Single taxonomy name. + * @param int|string|array $terms Optional. Term term_id, name, slug or array of said. Default null. + * @return bool|WP_Error WP_Error on input error. */ function is_object_in_term( $object_id, $taxonomy, $terms = null ) { if ( !$object_id = (int) $object_id ) return new WP_Error( 'invalid_object', __( 'Invalid object ID' ) ); $object_terms = get_object_term_cache( $object_id, $taxonomy ); - if ( false === $object_terms ) - $object_terms = wp_get_object_terms( $object_id, $taxonomy ); + if ( false === $object_terms ) { + $object_terms = wp_get_object_terms( $object_id, $taxonomy, array( 'update_term_meta_cache' => false ) ); + wp_cache_set( $object_id, $object_terms, "{$taxonomy}_relationships" ); + } if ( is_wp_error( $object_terms ) ) return $object_terms; @@ -4274,20 +4573,16 @@ function is_object_in_term( $object_id, $taxonomy, $terms = null ) { * * @since 3.0.0 * - * @param string $object_type Object type string - * @param string $taxonomy Single taxonomy name + * @param string $object_type Object type string. + * @param string $taxonomy Single taxonomy name. * @return bool True if object is associated with the taxonomy, otherwise false. */ -function is_object_in_taxonomy($object_type, $taxonomy) { - $taxonomies = get_object_taxonomies($object_type); - - if ( empty($taxonomies) ) +function is_object_in_taxonomy( $object_type, $taxonomy ) { + $taxonomies = get_object_taxonomies( $object_type ); + if ( empty( $taxonomies ) ) { return false; - - if ( in_array($taxonomy, $taxonomies) ) - return true; - - return false; + } + return in_array( $taxonomy, $taxonomies ); } /** @@ -4317,7 +4612,7 @@ function get_ancestors( $object_id = 0, $object_type = '', $resource_type = '' ) if ( ! $resource_type ) { if ( is_taxonomy_hierarchical( $object_type ) ) { $resource_type = 'taxonomy'; - } else if ( post_type_exists( $object_type ) ) { + } elseif ( post_type_exists( $object_type ) ) { $resource_type = 'post_type'; } } @@ -4347,19 +4642,19 @@ function get_ancestors( $object_id = 0, $object_type = '', $resource_type = '' ) } /** - * Returns the term's parent's term_ID + * Returns the term's parent's term_ID. * * @since 3.1.0 * - * @param int $term_id - * @param string $taxonomy - * - * @return int|bool false on error + * @param int $term_id Term ID. + * @param string $taxonomy Taxonomy name. + * @return int|false False on error. */ function wp_get_term_taxonomy_parent_id( $term_id, $taxonomy ) { $term = get_term( $term_id, $taxonomy ); - if ( !$term || is_wp_error( $term ) ) + if ( ! $term || is_wp_error( $term ) ) { return false; + } return (int) $term->parent; } @@ -4367,12 +4662,12 @@ function wp_get_term_taxonomy_parent_id( $term_id, $taxonomy ) { * Checks the given subset of the term hierarchy for hierarchy loops. * Prevents loops from forming and breaks those that it finds. * - * Attached to the wp_update_term_parent filter. + * Attached to the {@see 'wp_update_term_parent'} filter. * * @since 3.1.0 * - * @param int $parent term_id of the parent for the term we're checking. - * @param int $term_id The term we're checking. + * @param int $parent `term_id` of the parent for the term we're checking. + * @param int $term_id The term we're checking. * @param string $taxonomy The taxonomy of the term we're checking. * * @return int The new parent for the term. @@ -4382,16 +4677,15 @@ function wp_check_term_hierarchy_for_loops( $parent, $term_id, $taxonomy ) { if ( !$parent ) return 0; - // Can't be its own parent + // Can't be its own parent. if ( $parent == $term_id ) return 0; - // Now look for larger loops - + // Now look for larger loops. if ( !$loop = wp_find_hierarchy_loop( 'wp_get_term_taxonomy_parent_id', $term_id, $parent, array( $taxonomy ) ) ) return $parent; // No loop - // Setting $parent to the given value causes a loop + // Setting $parent to the given value causes a loop. if ( isset( $loop[$term_id] ) ) return 0;