<?php
/**
- * Category Template Tags and API.
+ * Taxonomy API: Core category-specific template tags
*
* @package WordPress
* @subpackage Template
+ * @since 1.2.0
*/
/**
* @since 0.71
*
* @param int $id Optional, default to current post ID. The post ID.
- * @return array Array of objects, one for each category assigned to the post.
+ * @return array Array of WP_Term objects, one for each category assigned to the post.
*/
function get_the_category( $id = false ) {
$categories = get_the_terms( $id, 'category' );
}
/**
- * Filter the array of categories to return for a post.
+ * Filters the array of categories to return for a post.
*
* @since 3.1.0
+ * @since 4.4.0 Added `$id` parameter.
*
* @param array $categories An array of categories to return for the post.
+ * @param int $id ID of the post.
*/
- return apply_filters( 'get_the_categories', $categories );
+ return apply_filters( 'get_the_categories', $categories, $id );
}
/**
return apply_filters( 'the_category', '', $separator, $parents );
}
- $categories = get_the_category( $post_id );
+ /**
+ * Filters the categories before building the category list.
+ *
+ * @since 4.4.0
+ *
+ * @param array $categories An array of the post's categories.
+ * @param int|bool $post_id ID of the post we're retrieving categories for. When `false`, we assume the
+ * current post in the loop.
+ */
+ $categories = apply_filters( 'the_category_list', get_the_category( $post_id ), $post_id );
+
if ( empty( $categories ) ) {
/** This filter is documented in wp-includes/category-template.php */
return apply_filters( 'the_category', __( 'Uncategorized' ), $separator, $parents );
}
/**
- * Filter the category or list of categories.
+ * Filters the category or list of categories.
*
* @since 1.2.0
*
*
* @since 2.1.0
* @since 4.2.0 Introduced the `value_field` argument.
+ * @since 4.6.0 Introduced the `required` argument.
*
* @param string|array $args {
* Optional. Array or string of arguments to generate a categories drop-down element.
* of the option elements. Accepts any valid term field: 'term_id', 'name',
* 'slug', 'term_group', 'term_taxonomy_id', 'taxonomy', 'description',
* 'parent', 'count'. Default 'term_id'.
- * @type string $taxonomy Name of the category to retrieve. Default 'category'.
+ * @type string|array $taxonomy Name of the category or categories to retrieve. Default 'category'.
* @type bool $hide_if_empty True to skip generating markup if no categories are found.
* Default false (create select element even if no categories are found).
+ * @type bool $required Whether the `<select>` element should have the HTML5 'required' attribute.
+ * Default false.
* }
* @return string HTML content only if 'echo' argument is 0.
*/
function wp_dropdown_categories( $args = '' ) {
$defaults = array(
- 'show_option_all' => '', 'show_option_none' => '',
- 'orderby' => 'id', 'order' => 'ASC',
- 'show_count' => 0,
- 'hide_empty' => 1, 'child_of' => 0,
- 'exclude' => '', 'echo' => 1,
- 'selected' => 0, 'hierarchical' => 0,
- 'name' => 'cat', 'id' => '',
- 'class' => 'postform', 'depth' => 0,
- 'tab_index' => 0, 'taxonomy' => 'category',
- 'hide_if_empty' => false, 'option_none_value' => -1,
- 'value_field' => 'term_id',
+ 'show_option_all' => '',
+ 'show_option_none' => '',
+ 'orderby' => 'id',
+ 'order' => 'ASC',
+ 'show_count' => 0,
+ 'hide_empty' => 1,
+ 'child_of' => 0,
+ 'exclude' => '',
+ 'echo' => 1,
+ 'selected' => 0,
+ 'hierarchical' => 0,
+ 'name' => 'cat',
+ 'id' => '',
+ 'class' => 'postform',
+ 'depth' => 0,
+ 'tab_index' => 0,
+ 'taxonomy' => 'category',
+ 'hide_if_empty' => false,
+ 'option_none_value' => -1,
+ 'value_field' => 'term_id',
+ 'required' => false,
);
$defaults['selected'] = ( is_category() ) ? get_query_var( 'cat' ) : 0;
// Back compat.
if ( isset( $args['type'] ) && 'link' == $args['type'] ) {
- _deprecated_argument( __FUNCTION__, '3.0', '' );
+ /* translators: 1: "type => link", 2: "taxonomy => link_category" alternative */
+ _deprecated_argument( __FUNCTION__, '3.0.0',
+ sprintf( __( '%1$s is deprecated. Use %2$s instead.' ),
+ '<code>type => link</code>',
+ '<code>taxonomy => link_category</code>'
+ )
+ );
$args['taxonomy'] = 'link_category';
}
$name = esc_attr( $r['name'] );
$class = esc_attr( $r['class'] );
$id = $r['id'] ? esc_attr( $r['id'] ) : $name;
+ $required = $r['required'] ? 'required' : '';
if ( ! $r['hide_if_empty'] || ! empty( $categories ) ) {
- $output = "<select name='$name' id='$id' class='$class' $tab_index_attribute>\n";
+ $output = "<select $required name='$name' id='$id' class='$class' $tab_index_attribute>\n";
} else {
$output = '';
}
if ( empty( $categories ) && ! $r['hide_if_empty'] && ! empty( $r['show_option_none'] ) ) {
/**
- * Filter a taxonomy drop-down display element.
+ * Filters a taxonomy drop-down display element.
*
* A variety of taxonomy drop-down display elements can be modified
* just prior to display via this filter. Filterable arguments include
$output .= "</select>\n";
}
/**
- * Filter the taxonomy drop-down output.
+ * Filters the taxonomy drop-down output.
*
* @since 2.1.0
*
/**
* Display or retrieve the HTML list of categories.
*
- * The list of arguments is below:
- * 'show_option_all' (string) - Text to display for showing all categories.
- * 'orderby' (string) default is 'ID' - What column to use for ordering the
- * categories.
- * 'order' (string) default is 'ASC' - What direction to order categories.
- * 'show_count' (bool|int) default is 0 - Whether to show how many posts are
- * in the category.
- * 'hide_empty' (bool|int) default is 1 - Whether to hide categories that
- * don't have any posts attached to them.
- * 'use_desc_for_title' (bool|int) default is 1 - Whether to use the
- * category description as the title attribute.
- * 'feed' - See {@link get_categories()}.
- * 'feed_type' - See {@link get_categories()}.
- * 'feed_image' - See {@link get_categories()}.
- * 'child_of' (int) default is 0 - See {@link get_categories()}.
- * 'exclude' (string) - See {@link get_categories()}.
- * 'exclude_tree' (string) - See {@link get_categories()}.
- * 'echo' (bool|int) default is 1 - Whether to display or retrieve content.
- * 'current_category' (int) - See {@link get_categories()}.
- * 'hierarchical' (bool) - See {@link get_categories()}.
- * 'title_li' (string) - See {@link get_categories()}.
- * 'depth' (int) - The max depth.
- *
* @since 2.1.0
+ * @since 4.4.0 Introduced the `hide_title_if_empty` and `separator` arguments. The `current_category` argument was modified to
+ * optionally accept an array of values.
*
- * @param string|array $args Optional. Override default arguments.
+ * @param string|array $args {
+ * Array of optional arguments.
+ *
+ * @type int $child_of Term ID to retrieve child terms of. See get_terms(). Default 0.
+ * @type int|array $current_category ID of category, or array of IDs of categories, that should get the
+ * 'current-cat' class. Default 0.
+ * @type int $depth Category depth. Used for tab indentation. Default 0.
+ * @type bool|int $echo True to echo markup, false to return it. Default 1.
+ * @type array|string $exclude Array or comma/space-separated string of term IDs to exclude.
+ * If `$hierarchical` is true, descendants of `$exclude` terms will also
+ * be excluded; see `$exclude_tree`. See get_terms().
+ * Default empty string.
+ * @type array|string $exclude_tree Array or comma/space-separated string of term IDs to exclude, along
+ * with their descendants. See get_terms(). Default empty string.
+ * @type string $feed Text to use for the feed link. Default 'Feed for all posts filed
+ * under [cat name]'.
+ * @type string $feed_image URL of an image to use for the feed link. Default empty string.
+ * @type string $feed_type Feed type. Used to build feed link. See get_term_feed_link().
+ * Default empty string (default feed).
+ * @type bool|int $hide_empty Whether to hide categories that don't have any posts attached to them.
+ * Default 1.
+ * @type bool $hide_title_if_empty Whether to hide the `$title_li` element if there are no terms in
+ * the list. Default false (title will always be shown).
+ * @type bool $hierarchical Whether to include terms that have non-empty descendants.
+ * See get_terms(). Default true.
+ * @type string $order Which direction to order categories. Accepts 'ASC' or 'DESC'.
+ * Default 'ASC'.
+ * @type string $orderby The column to use for ordering categories. Default 'ID'.
+ * @type string $separator Separator between links. Default '<br />'.
+ * @type bool|int $show_count Whether to show how many posts are in the category. Default 0.
+ * @type string $show_option_all Text to display for showing all categories. Default empty string.
+ * @type string $show_option_none Text to display for the 'no categories' option.
+ * Default 'No categories'.
+ * @type string $style The style used to display the categories list. If 'list', categories
+ * will be output as an unordered list. If left empty or another value,
+ * categories will be output separated by `<br>` tags. Default 'list'.
+ * @type string $taxonomy Taxonomy name. Default 'category'.
+ * @type string $title_li Text to use for the list title `<li>` element. Pass an empty string
+ * to disable. Default 'Categories'.
+ * @type bool|int $use_desc_for_title Whether to use the category description as the title attribute.
+ * Default 1.
+ * }
* @return false|string HTML content only if 'echo' argument is 0.
*/
function wp_list_categories( $args = '' ) {
$defaults = array(
- 'show_option_all' => '', 'show_option_none' => __('No categories'),
- 'orderby' => 'name', 'order' => 'ASC',
- 'style' => 'list',
- 'show_count' => 0, 'hide_empty' => 1,
- 'use_desc_for_title' => 1, 'child_of' => 0,
- 'feed' => '', 'feed_type' => '',
- 'feed_image' => '', 'exclude' => '',
- 'exclude_tree' => '', 'current_category' => 0,
- 'hierarchical' => true, 'title_li' => __( 'Categories' ),
- 'echo' => 1, 'depth' => 0,
- 'taxonomy' => 'category'
+ 'child_of' => 0,
+ 'current_category' => 0,
+ 'depth' => 0,
+ 'echo' => 1,
+ 'exclude' => '',
+ 'exclude_tree' => '',
+ 'feed' => '',
+ 'feed_image' => '',
+ 'feed_type' => '',
+ 'hide_empty' => 1,
+ 'hide_title_if_empty' => false,
+ 'hierarchical' => true,
+ 'order' => 'ASC',
+ 'orderby' => 'name',
+ 'separator' => '<br />',
+ 'show_count' => 0,
+ 'show_option_all' => '',
+ 'show_option_none' => __( 'No categories' ),
+ 'style' => 'list',
+ 'taxonomy' => 'category',
+ 'title_li' => __( 'Categories' ),
+ 'use_desc_for_title' => 1,
);
$r = wp_parse_args( $args, $defaults );
if ( !isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] )
$r['pad_counts'] = true;
+ // Descendants of exclusions should be excluded too.
if ( true == $r['hierarchical'] ) {
- $r['exclude_tree'] = $r['exclude'];
+ $exclude_tree = array();
+
+ if ( $r['exclude_tree'] ) {
+ $exclude_tree = array_merge( $exclude_tree, wp_parse_id_list( $r['exclude_tree'] ) );
+ }
+
+ if ( $r['exclude'] ) {
+ $exclude_tree = array_merge( $exclude_tree, wp_parse_id_list( $r['exclude'] ) );
+ }
+
+ $r['exclude_tree'] = $exclude_tree;
$r['exclude'] = '';
}
$categories = get_categories( $r );
$output = '';
- if ( $r['title_li'] && 'list' == $r['style'] ) {
+ if ( $r['title_li'] && 'list' == $r['style'] && ( ! empty( $categories ) || ! $r['hide_title_if_empty'] ) ) {
$output = '<li class="' . esc_attr( $r['class'] ) . '">' . $r['title_li'] . '<ul>';
}
if ( empty( $categories ) ) {
}
}
- // Fallback for the 'All' link is the front page.
+ // Fallback for the 'All' link is the posts page.
if ( ! $posts_page ) {
- $posts_page = 'page' == get_option( 'show_on_front' ) && get_option( 'page_for_posts' ) ? get_permalink( get_option( 'page_for_posts' ) ) : home_url( '/' );
+ if ( 'page' == get_option( 'show_on_front' ) && get_option( 'page_for_posts' ) ) {
+ $posts_page = get_permalink( get_option( 'page_for_posts' ) );
+ } else {
+ $posts_page = home_url( '/' );
+ }
}
$posts_page = esc_url( $posts_page );
$output .= '</ul></li>';
/**
- * Filter the HTML output of a taxonomy list.
+ * Filters the HTML output of a taxonomy list.
*
* @since 2.1.0
*
* The 'post_type' argument is used only when 'link' is set to 'edit'. It determines the post_type
* passed to edit.php for the popular tags edit links.
*
- * The 'exclude' and 'include' arguments are used for the {@link get_tags()}
- * function. Only one should be used, because only one will be used and the
- * other ignored, if they are both set.
+ * The 'exclude' and 'include' arguments are used for the get_tags() function. Only one
+ * should be used, because only one will be used and the other ignored, if they are both set.
*
* @since 2.3.0
*
$return = wp_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args
/**
- * Filter the tag cloud output.
+ * Filters the tag cloud output.
*
* @since 2.3.0
*
/**
* Generates a tag cloud (heatmap) from provided data.
*
- * The text size is set by the 'smallest' and 'largest' arguments, which will
- * use the 'unit' argument value for the CSS text size unit. The 'format'
- * argument can be 'flat' (default), 'list', or 'array'. The flat value for the
- * 'format' argument will separate tags with spaces. The list value for the
- * 'format' argument will format the tags in a UL HTML list. The array value for
- * the 'format' argument will return in PHP array type format.
- *
- * The 'tag_cloud_sort' filter allows you to override the sorting.
- * Passed to the filter: $tags array and $args array, has to return the $tags array
- * after sorting it.
- *
- * The 'orderby' argument will accept 'name' or 'count' and defaults to 'name'.
- * The 'order' is the direction to sort, defaults to 'ASC' and can be 'DESC' or
- * 'RAND'.
- *
- * The 'number' argument is how many tags to return. By default, the limit will
- * be to return the entire tag cloud list.
- *
- * The 'topic_count_text' argument is a nooped plural from _n_noop() to generate the
- * text for the tooltip of the tag link.
- *
- * The 'topic_count_text_callback' argument is a function, which given the count
- * of the posts with that tag returns a text for the tooltip of the tag link.
- *
* @todo Complete functionality.
* @since 2.3.0
*
* @param array $tags List of tags.
- * @param string|array $args Optional, override default arguments.
+ * @param string|array $args {
+ * Optional. Array of string of arguments for generating a tag cloud.
+ *
+ * @type int $smallest Smallest font size used to display tags. Paired
+ * with the value of `$unit`, to determine CSS text
+ * size unit. Default 8 (pt).
+ * @type int $largest Largest font size used to display tags. Paired
+ * with the value of `$unit`, to determine CSS text
+ * size unit. Default 22 (pt).
+ * @type string $unit CSS text size unit to use with the `$smallest`
+ * and `$largest` values. Accepts any valid CSS text
+ * size unit. Default 'pt'.
+ * @type int $number The number of tags to return. Accepts any
+ * positive integer or zero to return all.
+ * Default 0.
+ * @type string $format Format to display the tag cloud in. Accepts 'flat'
+ * (tags separated with spaces), 'list' (tags displayed
+ * in an unordered list), or 'array' (returns an array).
+ * Default 'flat'.
+ * @type string $separator HTML or text to separate the tags. Default "\n" (newline).
+ * @type string $orderby Value to order tags by. Accepts 'name' or 'count'.
+ * Default 'name'. The {@see 'tag_cloud_sort'} filter
+ * can also affect how tags are sorted.
+ * @type string $order How to order the tags. Accepts 'ASC' (ascending),
+ * 'DESC' (descending), or 'RAND' (random). Default 'ASC'.
+ * @type int|bool $filter Whether to enable filtering of the final output
+ * via {@see 'wp_generate_tag_cloud'}. Default 1|true.
+ * @type string $topic_count_text Nooped plural text from _n_noop() to supply to
+ * tag tooltips. Default null.
+ * @type callable $topic_count_text_callback Callback used to generate nooped plural text for
+ * tag tooltips based on the count. Default null.
+ * @type callable $topic_count_scale_callback Callback used to determine the tag count scaling
+ * value. Default default_topic_count_scale().
+ * }
* @return string|array Tag cloud as a string or an array, depending on 'format' argument.
*/
function wp_generate_tag_cloud( $tags, $args = '' ) {
}
/**
- * Filter how the items in a tag cloud are sorted.
+ * Filters how the items in a tag cloud are sorted.
*
* @since 2.8.0
*
}
/**
- * Filter the data used to generate the tag cloud.
+ * Filters the data used to generate the tag cloud.
*
* @since 4.3.0
*
// generate the output links array
foreach ( $tags_data as $key => $tag_data ) {
- $a[] = "<a href='" . esc_url( $tag_data['url'] ) . "' class='" . esc_attr( $tag_data['class'] ) . "' title='" . esc_attr( $tag_data['title'] ) . "' style='font-size: " . esc_attr( str_replace( ',', '.', $tag_data['font_size'] ) . $args['unit'] ) . ";'>" . esc_html( $tag_data['name'] ) . "</a>";
+ $class = $tag_data['class'] . ' tag-link-position-' . ( $key + 1 );
+ $a[] = "<a href='" . esc_url( $tag_data['url'] ) . "' class='" . esc_attr( $class ) . "' title='" . esc_attr( $tag_data['title'] ) . "' style='font-size: " . esc_attr( str_replace( ',', '.', $tag_data['font_size'] ) . $args['unit'] ) . ";'>" . esc_html( $tag_data['name'] ) . "</a>";
}
switch ( $args['format'] ) {
if ( $args['filter'] ) {
/**
- * Filter the generated output of a tag cloud.
+ * Filters the generated output of a tag cloud.
*
* The filter is only evaluated if a true value is passed
* to the $filter argument in wp_generate_tag_cloud().
}
/**
- * Callback for comparing objects based on name
+ * Serves as a callback for comparing objects based on name.
+ *
+ * Used with `uasort()`.
*
* @since 3.1.0
* @access private
- * @return int
+ *
+ * @param object $a The first object to compare.
+ * @param object $b The second object to compare.
+ * @return int Negative number if `$a->name` is less than `$b->name`, zero if they are equal,
+ * or greater than zero if `$a->name` is greater than `$b->name`.
*/
function _wp_object_name_sort_cb( $a, $b ) {
return strnatcasecmp( $a->name, $b->name );
}
/**
- * Callback for comparing objects based on count
+ * Serves as a callback for comparing objects based on count.
+ *
+ * Used with `uasort()`.
*
* @since 3.1.0
* @access private
- * @return bool
+ *
+ * @param object $a The first object to compare.
+ * @param object $b The second object to compare.
+ * @return bool Whether the count value for `$a` is greater than the count value for `$b`.
*/
function _wp_object_count_sort_cb( $a, $b ) {
return ( $a->count > $b->count );
return call_user_func_array( array( $walker, 'walk' ), $args );
}
-/**
- * Create HTML list of categories.
- *
- * @package WordPress
- * @since 2.1.0
- * @uses Walker
- */
-class Walker_Category extends Walker {
- /**
- * What the class handles.
- *
- * @see Walker::$tree_type
- * @since 2.1.0
- * @var string
- */
- public $tree_type = 'category';
-
- /**
- * Database fields to use.
- *
- * @see Walker::$db_fields
- * @since 2.1.0
- * @todo Decouple this
- * @var array
- */
- public $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
-
- /**
- * Starts the list before the elements are added.
- *
- * @see Walker::start_lvl()
- *
- * @since 2.1.0
- *
- * @param string $output Passed by reference. Used to append additional content.
- * @param int $depth Depth of category. Used for tab indentation.
- * @param array $args An array of arguments. Will only append content if style argument value is 'list'.
- * @see wp_list_categories()
- */
- public function start_lvl( &$output, $depth = 0, $args = array() ) {
- if ( 'list' != $args['style'] )
- return;
-
- $indent = str_repeat("\t", $depth);
- $output .= "$indent<ul class='children'>\n";
- }
-
- /**
- * Ends the list of after the elements are added.
- *
- * @see Walker::end_lvl()
- *
- * @since 2.1.0
- *
- * @param string $output Passed by reference. Used to append additional content.
- * @param int $depth Depth of category. Used for tab indentation.
- * @param array $args An array of arguments. Will only append content if style argument value is 'list'.
- * @wsee wp_list_categories()
- */
- public function end_lvl( &$output, $depth = 0, $args = array() ) {
- if ( 'list' != $args['style'] )
- return;
-
- $indent = str_repeat("\t", $depth);
- $output .= "$indent</ul>\n";
- }
-
- /**
- * Start the element output.
- *
- * @see Walker::start_el()
- *
- * @since 2.1.0
- *
- * @param string $output Passed by reference. Used to append additional content.
- * @param object $category Category data object.
- * @param int $depth Depth of category in reference to parents. Default 0.
- * @param array $args An array of arguments. @see wp_list_categories()
- * @param int $id ID of the current category.
- */
- public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
- /** This filter is documented in wp-includes/category-template.php */
- $cat_name = apply_filters(
- 'list_cats',
- esc_attr( $category->name ),
- $category
- );
-
- // Don't generate an element if the category name is empty.
- if ( ! $cat_name ) {
- return;
- }
-
- $link = '<a href="' . esc_url( get_term_link( $category ) ) . '" ';
- if ( $args['use_desc_for_title'] && ! empty( $category->description ) ) {
- /**
- * Filter the category description for display.
- *
- * @since 1.2.0
- *
- * @param string $description Category description.
- * @param object $category Category object.
- */
- $link .= 'title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"';
- }
-
- $link .= '>';
- $link .= $cat_name . '</a>';
-
- if ( ! empty( $args['feed_image'] ) || ! empty( $args['feed'] ) ) {
- $link .= ' ';
-
- if ( empty( $args['feed_image'] ) ) {
- $link .= '(';
- }
-
- $link .= '<a href="' . esc_url( get_term_feed_link( $category->term_id, $category->taxonomy, $args['feed_type'] ) ) . '"';
-
- if ( empty( $args['feed'] ) ) {
- $alt = ' alt="' . sprintf(__( 'Feed for all posts filed under %s' ), $cat_name ) . '"';
- } else {
- $alt = ' alt="' . $args['feed'] . '"';
- $name = $args['feed'];
- $link .= empty( $args['title'] ) ? '' : $args['title'];
- }
-
- $link .= '>';
-
- if ( empty( $args['feed_image'] ) ) {
- $link .= $name;
- } else {
- $link .= "<img src='" . $args['feed_image'] . "'$alt" . ' />';
- }
- $link .= '</a>';
-
- if ( empty( $args['feed_image'] ) ) {
- $link .= ')';
- }
- }
-
- if ( ! empty( $args['show_count'] ) ) {
- $link .= ' (' . number_format_i18n( $category->count ) . ')';
- }
- if ( 'list' == $args['style'] ) {
- $output .= "\t<li";
- $css_classes = array(
- 'cat-item',
- 'cat-item-' . $category->term_id,
- );
-
- if ( ! empty( $args['current_category'] ) ) {
- $_current_category = get_term( $args['current_category'], $category->taxonomy );
- if ( $category->term_id == $args['current_category'] ) {
- $css_classes[] = 'current-cat';
- } elseif ( $category->term_id == $_current_category->parent ) {
- $css_classes[] = 'current-cat-parent';
- }
- }
-
- /**
- * Filter the list of CSS classes to include with each category in the list.
- *
- * @since 4.2.0
- *
- * @see wp_list_categories()
- *
- * @param array $css_classes An array of CSS classes to be applied to each list item.
- * @param object $category Category data object.
- * @param int $depth Depth of page, used for padding.
- * @param array $args An array of wp_list_categories() arguments.
- */
- $css_classes = implode( ' ', apply_filters( 'category_css_class', $css_classes, $category, $depth, $args ) );
-
- $output .= ' class="' . $css_classes . '"';
- $output .= ">$link\n";
- } else {
- $output .= "\t$link<br />\n";
- }
- }
-
- /**
- * Ends the element output, if needed.
- *
- * @see Walker::end_el()
- *
- * @since 2.1.0
- *
- * @param string $output Passed by reference. Used to append additional content.
- * @param object $page Not used.
- * @param int $depth Depth of category. Not used.
- * @param array $args An array of arguments. Only uses 'list' for whether should append to output. @see wp_list_categories()
- */
- public function end_el( &$output, $page, $depth = 0, $args = array() ) {
- if ( 'list' != $args['style'] )
- return;
-
- $output .= "</li>\n";
- }
-
-}
-
-/**
- * Create HTML dropdown list of Categories.
- *
- * @package WordPress
- * @since 2.1.0
- * @uses Walker
- */
-class Walker_CategoryDropdown extends Walker {
- /**
- * @see Walker::$tree_type
- * @since 2.1.0
- * @var string
- */
- public $tree_type = 'category';
-
- /**
- * @see Walker::$db_fields
- * @since 2.1.0
- * @todo Decouple this
- * @var array
- */
- public $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
-
- /**
- * Start the element output.
- *
- * @see Walker::start_el()
- * @since 2.1.0
- *
- * @param string $output Passed by reference. Used to append additional content.
- * @param object $category Category data object.
- * @param int $depth Depth of category. Used for padding.
- * @param array $args Uses 'selected', 'show_count', and 'value_field' keys, if they exist.
- * See {@see wp_dropdown_categories()}.
- */
- public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
- $pad = str_repeat(' ', $depth * 3);
-
- /** This filter is documented in wp-includes/category-template.php */
- $cat_name = apply_filters( 'list_cats', $category->name, $category );
-
- if ( isset( $args['value_field'] ) && isset( $category->{$args['value_field']} ) ) {
- $value_field = $args['value_field'];
- } else {
- $value_field = 'term_id';
- }
-
- $output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $category->{$value_field} ) . "\"";
-
- // Type-juggling causes false matches, so we force everything to a string.
- if ( (string) $category->{$value_field} === (string) $args['selected'] )
- $output .= ' selected="selected"';
- $output .= '>';
- $output .= $pad.$cat_name;
- if ( $args['show_count'] )
- $output .= ' ('. number_format_i18n( $category->count ) .')';
- $output .= "</option>\n";
- }
-}
-
//
// Tags
//
function get_the_tags( $id = 0 ) {
/**
- * Filter the array of tags for the given post.
+ * Filters the array of tags for the given post.
*
* @since 2.3.0
*
function get_the_tag_list( $before = '', $sep = '', $after = '', $id = 0 ) {
/**
- * Filter the tags list for a given post.
+ * Filters the tags list for a given post.
*
* @since 2.3.0
*
*
* @param int|object $post Post ID or object.
* @param string $taxonomy Taxonomy name.
- * @return array|false|WP_Error Array of term objects on success, false if there are no terms
+ * @return array|false|WP_Error Array of WP_Term objects on success, false if there are no terms
* or the post does not exist, WP_Error on failure.
*/
function get_the_terms( $post, $taxonomy ) {
$terms = get_object_term_cache( $post->ID, $taxonomy );
if ( false === $terms ) {
$terms = wp_get_object_terms( $post->ID, $taxonomy );
- wp_cache_add($post->ID, $terms, $taxonomy . '_relationships');
+ if ( ! is_wp_error( $terms ) ) {
+ $term_ids = wp_list_pluck( $terms, 'term_id' );
+ wp_cache_add( $post->ID, $term_ids, $taxonomy . '_relationships' );
+ }
}
/**
- * Filter the list of terms attached to the given post.
+ * Filters the list of terms attached to the given post.
*
* @since 3.1.0
*
}
/**
- * Filter the term links for a given taxonomy.
+ * Filters the term links for a given taxonomy.
*
* The dynamic portion of the filter name, `$taxonomy`, refers
* to the taxonomy slug.
return false;
/**
- * Filter the list of terms to display.
+ * Filters the list of terms to display.
*
* @since 2.9.0
*