3 * Navigation Menu functions
6 * @subpackage Nav_Menus
11 * Returns a navigation menu object.
15 * @param string $menu Menu ID, slug, or name - or the menu object.
16 * @return object|false False if $menu param isn't supplied or term does not exist, menu object if successful.
18 function wp_get_nav_menu_object( $menu ) {
21 if ( is_object( $menu ) ) {
25 if ( $menu && ! $menu_obj ) {
26 $menu_obj = get_term( $menu, 'nav_menu' );
29 $menu_obj = get_term_by( 'slug', $menu, 'nav_menu' );
33 $menu_obj = get_term_by( 'name', $menu, 'nav_menu' );
37 if ( ! $menu_obj || is_wp_error( $menu_obj ) ) {
42 * Filters the nav_menu term retrieved for wp_get_nav_menu_object().
46 * @param object|false $menu_obj Term from nav_menu taxonomy, or false if nothing had been found.
47 * @param string $menu The menu ID, slug, or name passed to wp_get_nav_menu_object().
49 return apply_filters( 'wp_get_nav_menu_object', $menu_obj, $menu );
53 * Check if the given ID is a navigation menu.
55 * Returns true if it is; false otherwise.
59 * @param int|string $menu The menu to check (ID, slug, or name).
60 * @return bool Whether the menu exists.
62 function is_nav_menu( $menu ) {
66 $menu_obj = wp_get_nav_menu_object( $menu );
70 ! is_wp_error( $menu_obj ) &&
71 ! empty( $menu_obj->taxonomy ) &&
72 'nav_menu' == $menu_obj->taxonomy
80 * Registers navigation menu locations for a theme.
84 * @global array $_wp_registered_nav_menus
86 * @param array $locations Associative array of menu location identifiers (like a slug) and descriptive text.
88 function register_nav_menus( $locations = array() ) {
89 global $_wp_registered_nav_menus;
91 add_theme_support( 'menus' );
93 $_wp_registered_nav_menus = array_merge( (array) $_wp_registered_nav_menus, $locations );
97 * Unregisters a navigation menu location for a theme.
99 * @global array $_wp_registered_nav_menus
101 * @param string $location The menu location identifier.
102 * @return bool True on success, false on failure.
104 function unregister_nav_menu( $location ) {
105 global $_wp_registered_nav_menus;
107 if ( is_array( $_wp_registered_nav_menus ) && isset( $_wp_registered_nav_menus[$location] ) ) {
108 unset( $_wp_registered_nav_menus[$location] );
109 if ( empty( $_wp_registered_nav_menus ) ) {
110 _remove_theme_support( 'menus' );
118 * Registers a navigation menu location for a theme.
122 * @param string $location Menu location identifier, like a slug.
123 * @param string $description Menu location descriptive text.
125 function register_nav_menu( $location, $description ) {
126 register_nav_menus( array( $location => $description ) );
129 * Retrieves all registered navigation menu locations in a theme.
133 * @global array $_wp_registered_nav_menus
135 * @return array Registered navigation menu locations. If none are registered, an empty array.
137 function get_registered_nav_menus() {
138 global $_wp_registered_nav_menus;
139 if ( isset( $_wp_registered_nav_menus ) )
140 return $_wp_registered_nav_menus;
145 * Retrieves all registered navigation menu locations and the menus assigned to them.
149 * @return array Registered navigation menu locations and the menus assigned them.
150 * If none are registered, an empty array.
153 function get_nav_menu_locations() {
154 $locations = get_theme_mod( 'nav_menu_locations' );
155 return ( is_array( $locations ) ) ? $locations : array();
159 * Determines whether a registered nav menu location has a menu assigned to it.
163 * @param string $location Menu location identifier.
164 * @return bool Whether location has a menu.
166 function has_nav_menu( $location ) {
167 $has_nav_menu = false;
169 $registered_nav_menus = get_registered_nav_menus();
170 if ( isset( $registered_nav_menus[ $location ] ) ) {
171 $locations = get_nav_menu_locations();
172 $has_nav_menu = ! empty( $locations[ $location ] );
176 * Filters whether a nav menu is assigned to the specified location.
180 * @param bool $has_nav_menu Whether there is a menu assigned to a location.
181 * @param string $location Menu location.
183 return apply_filters( 'has_nav_menu', $has_nav_menu, $location );
187 * Determines whether the given ID is a nav menu item.
191 * @param int $menu_item_id The ID of the potential nav menu item.
192 * @return bool Whether the given ID is that of a nav menu item.
194 function is_nav_menu_item( $menu_item_id = 0 ) {
195 return ( ! is_wp_error( $menu_item_id ) && ( 'nav_menu_item' == get_post_type( $menu_item_id ) ) );
199 * Creates a navigation menu.
201 * Note that `$menu_name` is expected to be pre-slashed.
205 * @param string $menu_name Menu name.
206 * @return int|WP_Error Menu ID on success, WP_Error object on failure.
208 function wp_create_nav_menu( $menu_name ) {
209 // expected_slashed ($menu_name)
210 return wp_update_nav_menu_object( 0, array( 'menu-name' => $menu_name ) );
214 * Delete a Navigation Menu.
218 * @param string $menu Menu ID, slug, or name.
219 * @return bool|WP_Error True on success, false or WP_Error object on failure.
221 function wp_delete_nav_menu( $menu ) {
222 $menu = wp_get_nav_menu_object( $menu );
226 $menu_objects = get_objects_in_term( $menu->term_id, 'nav_menu' );
227 if ( ! empty( $menu_objects ) ) {
228 foreach ( $menu_objects as $item ) {
229 wp_delete_post( $item );
233 $result = wp_delete_term( $menu->term_id, 'nav_menu' );
235 // Remove this menu from any locations.
236 $locations = get_nav_menu_locations();
237 foreach ( $locations as $location => $menu_id ) {
238 if ( $menu_id == $menu->term_id )
239 $locations[ $location ] = 0;
241 set_theme_mod( 'nav_menu_locations', $locations );
243 if ( $result && !is_wp_error($result) )
246 * Fires after a navigation menu has been successfully deleted.
250 * @param int $term_id ID of the deleted menu.
252 do_action( 'wp_delete_nav_menu', $menu->term_id );
258 * Save the properties of a menu or create a new menu with those properties.
260 * Note that `$menu_data` is expected to be pre-slashed.
264 * @param int $menu_id The ID of the menu or "0" to create a new menu.
265 * @param array $menu_data The array of menu data.
266 * @return int|WP_Error Menu ID on success, WP_Error object on failure.
268 function wp_update_nav_menu_object( $menu_id = 0, $menu_data = array() ) {
269 // expected_slashed ($menu_data)
270 $menu_id = (int) $menu_id;
272 $_menu = wp_get_nav_menu_object( $menu_id );
275 'description' => ( isset( $menu_data['description'] ) ? $menu_data['description'] : '' ),
276 'name' => ( isset( $menu_data['menu-name'] ) ? $menu_data['menu-name'] : '' ),
277 'parent' => ( isset( $menu_data['parent'] ) ? (int) $menu_data['parent'] : 0 ),
281 // double-check that we're not going to have one menu take the name of another
282 $_possible_existing = get_term_by( 'name', $menu_data['menu-name'], 'nav_menu' );
284 $_possible_existing &&
285 ! is_wp_error( $_possible_existing ) &&
286 isset( $_possible_existing->term_id ) &&
287 $_possible_existing->term_id != $menu_id
289 return new WP_Error( 'menu_exists',
290 /* translators: %s: menu name */
291 sprintf( __( 'The menu name %s conflicts with another menu name. Please try another.' ),
292 '<strong>' . esc_html( $menu_data['menu-name'] ) . '</strong>'
297 // menu doesn't already exist, so create a new menu
298 if ( ! $_menu || is_wp_error( $_menu ) ) {
299 $menu_exists = get_term_by( 'name', $menu_data['menu-name'], 'nav_menu' );
301 if ( $menu_exists ) {
302 return new WP_Error( 'menu_exists',
303 /* translators: %s: menu name */
304 sprintf( __( 'The menu name %s conflicts with another menu name. Please try another.' ),
305 '<strong>' . esc_html( $menu_data['menu-name'] ) . '</strong>'
310 $_menu = wp_insert_term( $menu_data['menu-name'], 'nav_menu', $args );
312 if ( is_wp_error( $_menu ) )
316 * Fires after a navigation menu is successfully created.
320 * @param int $term_id ID of the new menu.
321 * @param array $menu_data An array of menu data.
323 do_action( 'wp_create_nav_menu', $_menu['term_id'], $menu_data );
325 return (int) $_menu['term_id'];
328 if ( ! $_menu || ! isset( $_menu->term_id ) )
331 $menu_id = (int) $_menu->term_id;
333 $update_response = wp_update_term( $menu_id, 'nav_menu', $args );
335 if ( is_wp_error( $update_response ) )
336 return $update_response;
338 $menu_id = (int) $update_response['term_id'];
341 * Fires after a navigation menu has been successfully updated.
345 * @param int $menu_id ID of the updated menu.
346 * @param array $menu_data An array of menu data.
348 do_action( 'wp_update_nav_menu', $menu_id, $menu_data );
353 * Save the properties of a menu item or create a new one.
355 * The menu-item-title, menu-item-description, and menu-item-attr-title are expected
356 * to be pre-slashed since they are passed directly into `wp_insert_post()`.
360 * @param int $menu_id The ID of the menu. Required. If "0", makes the menu item a draft orphan.
361 * @param int $menu_item_db_id The ID of the menu item. If "0", creates a new menu item.
362 * @param array $menu_item_data The menu item's data.
363 * @return int|WP_Error The menu item's database ID or WP_Error object on failure.
365 function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0, $menu_item_data = array() ) {
366 $menu_id = (int) $menu_id;
367 $menu_item_db_id = (int) $menu_item_db_id;
369 // make sure that we don't convert non-nav_menu_item objects into nav_menu_item objects
370 if ( ! empty( $menu_item_db_id ) && ! is_nav_menu_item( $menu_item_db_id ) )
371 return new WP_Error( 'update_nav_menu_item_failed', __( 'The given object ID is not that of a menu item.' ) );
373 $menu = wp_get_nav_menu_object( $menu_id );
375 if ( ! $menu && 0 !== $menu_id ) {
376 return new WP_Error( 'invalid_menu_id', __( 'Invalid menu ID.' ) );
379 if ( is_wp_error( $menu ) ) {
384 'menu-item-db-id' => $menu_item_db_id,
385 'menu-item-object-id' => 0,
386 'menu-item-object' => '',
387 'menu-item-parent-id' => 0,
388 'menu-item-position' => 0,
389 'menu-item-type' => 'custom',
390 'menu-item-title' => '',
391 'menu-item-url' => '',
392 'menu-item-description' => '',
393 'menu-item-attr-title' => '',
394 'menu-item-target' => '',
395 'menu-item-classes' => '',
396 'menu-item-xfn' => '',
397 'menu-item-status' => '',
400 $args = wp_parse_args( $menu_item_data, $defaults );
402 if ( 0 == $menu_id ) {
403 $args['menu-item-position'] = 1;
404 } elseif ( 0 == (int) $args['menu-item-position'] ) {
405 $menu_items = 0 == $menu_id ? array() : (array) wp_get_nav_menu_items( $menu_id, array( 'post_status' => 'publish,draft' ) );
406 $last_item = array_pop( $menu_items );
407 $args['menu-item-position'] = ( $last_item && isset( $last_item->menu_order ) ) ? 1 + $last_item->menu_order : count( $menu_items );
410 $original_parent = 0 < $menu_item_db_id ? get_post_field( 'post_parent', $menu_item_db_id ) : 0;
412 if ( 'custom' != $args['menu-item-type'] ) {
413 /* if non-custom menu item, then:
414 * use original object's URL
415 * blank default title to sync with original object's
418 $args['menu-item-url'] = '';
420 $original_title = '';
421 if ( 'taxonomy' == $args['menu-item-type'] ) {
422 $original_parent = get_term_field( 'parent', $args['menu-item-object-id'], $args['menu-item-object'], 'raw' );
423 $original_title = get_term_field( 'name', $args['menu-item-object-id'], $args['menu-item-object'], 'raw' );
424 } elseif ( 'post_type' == $args['menu-item-type'] ) {
426 $original_object = get_post( $args['menu-item-object-id'] );
427 $original_parent = (int) $original_object->post_parent;
428 $original_title = $original_object->post_title;
429 } elseif ( 'post_type_archive' == $args['menu-item-type'] ) {
430 $original_object = get_post_type_object( $args['menu-item-object'] );
431 if ( $original_object ) {
432 $original_title = $original_object->labels->archives;
436 if ( $args['menu-item-title'] == $original_title )
437 $args['menu-item-title'] = '';
439 // hack to get wp to create a post object when too many properties are empty
440 if ( '' == $args['menu-item-title'] && '' == $args['menu-item-description'] )
441 $args['menu-item-description'] = ' ';
444 // Populate the menu item object
446 'menu_order' => $args['menu-item-position'],
448 'post_content' => $args['menu-item-description'],
449 'post_excerpt' => $args['menu-item-attr-title'],
450 'post_parent' => $original_parent,
451 'post_title' => $args['menu-item-title'],
452 'post_type' => 'nav_menu_item',
455 $update = 0 != $menu_item_db_id;
457 // New menu item. Default is draft status
460 $post['post_status'] = 'publish' == $args['menu-item-status'] ? 'publish' : 'draft';
461 $menu_item_db_id = wp_insert_post( $post );
462 if ( ! $menu_item_db_id || is_wp_error( $menu_item_db_id ) )
463 return $menu_item_db_id;
466 * Fires immediately after a new navigation menu item has been added.
470 * @see wp_update_nav_menu_item()
472 * @param int $menu_id ID of the updated menu.
473 * @param int $menu_item_db_id ID of the new menu item.
474 * @param array $args An array of arguments used to update/add the menu item.
476 do_action( 'wp_add_nav_menu_item', $menu_id, $menu_item_db_id, $args );
479 // Associate the menu item with the menu term
480 // Only set the menu term if it isn't set to avoid unnecessary wp_get_object_terms()
481 if ( $menu_id && ( ! $update || ! is_object_in_term( $menu_item_db_id, 'nav_menu', (int) $menu->term_id ) ) ) {
482 wp_set_object_terms( $menu_item_db_id, array( $menu->term_id ), 'nav_menu' );
485 if ( 'custom' == $args['menu-item-type'] ) {
486 $args['menu-item-object-id'] = $menu_item_db_id;
487 $args['menu-item-object'] = 'custom';
490 $menu_item_db_id = (int) $menu_item_db_id;
492 update_post_meta( $menu_item_db_id, '_menu_item_type', sanitize_key($args['menu-item-type']) );
493 update_post_meta( $menu_item_db_id, '_menu_item_menu_item_parent', strval( (int) $args['menu-item-parent-id'] ) );
494 update_post_meta( $menu_item_db_id, '_menu_item_object_id', strval( (int) $args['menu-item-object-id'] ) );
495 update_post_meta( $menu_item_db_id, '_menu_item_object', sanitize_key($args['menu-item-object']) );
496 update_post_meta( $menu_item_db_id, '_menu_item_target', sanitize_key($args['menu-item-target']) );
498 $args['menu-item-classes'] = array_map( 'sanitize_html_class', explode( ' ', $args['menu-item-classes'] ) );
499 $args['menu-item-xfn'] = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['menu-item-xfn'] ) ) );
500 update_post_meta( $menu_item_db_id, '_menu_item_classes', $args['menu-item-classes'] );
501 update_post_meta( $menu_item_db_id, '_menu_item_xfn', $args['menu-item-xfn'] );
502 update_post_meta( $menu_item_db_id, '_menu_item_url', esc_url_raw($args['menu-item-url']) );
505 update_post_meta( $menu_item_db_id, '_menu_item_orphaned', (string) time() );
506 elseif ( get_post_meta( $menu_item_db_id, '_menu_item_orphaned' ) )
507 delete_post_meta( $menu_item_db_id, '_menu_item_orphaned' );
509 // Update existing menu item. Default is publish status
511 $post['ID'] = $menu_item_db_id;
512 $post['post_status'] = 'draft' == $args['menu-item-status'] ? 'draft' : 'publish';
513 wp_update_post( $post );
517 * Fires after a navigation menu item has been updated.
521 * @see wp_update_nav_menu_item()
523 * @param int $menu_id ID of the updated menu.
524 * @param int $menu_item_db_id ID of the updated menu item.
525 * @param array $args An array of arguments used to update a menu item.
527 do_action( 'wp_update_nav_menu_item', $menu_id, $menu_item_db_id, $args );
529 return $menu_item_db_id;
533 * Returns all navigation menu objects.
536 * @since 4.1.0 Default value of the 'orderby' argument was changed from 'none'
539 * @param array $args Optional. Array of arguments passed on to get_terms().
540 * Default empty array.
541 * @return array Menu objects.
543 function wp_get_nav_menus( $args = array() ) {
544 $defaults = array( 'hide_empty' => false, 'orderby' => 'name' );
545 $args = wp_parse_args( $args, $defaults );
548 * Filters the navigation menu objects being returned.
554 * @param array $menus An array of menu objects.
555 * @param array $args An array of arguments used to retrieve menu objects.
557 return apply_filters( 'wp_get_nav_menus', get_terms( 'nav_menu', $args), $args );
561 * Sort menu items by the desired key.
566 * @global string $_menu_item_sort_prop
568 * @param object $a The first object to compare
569 * @param object $b The second object to compare
570 * @return int -1, 0, or 1 if $a is considered to be respectively less than, equal to, or greater than $b.
572 function _sort_nav_menu_items( $a, $b ) {
573 global $_menu_item_sort_prop;
575 if ( empty( $_menu_item_sort_prop ) )
578 if ( ! isset( $a->$_menu_item_sort_prop ) || ! isset( $b->$_menu_item_sort_prop ) )
581 $_a = (int) $a->$_menu_item_sort_prop;
582 $_b = (int) $b->$_menu_item_sort_prop;
584 if ( $a->$_menu_item_sort_prop == $b->$_menu_item_sort_prop )
586 elseif ( $_a == $a->$_menu_item_sort_prop && $_b == $b->$_menu_item_sort_prop )
587 return $_a < $_b ? -1 : 1;
589 return strcmp( $a->$_menu_item_sort_prop, $b->$_menu_item_sort_prop );
593 * Return if a menu item is valid.
595 * @link https://core.trac.wordpress.org/ticket/13958
600 * @param object $item The menu item to check.
601 * @return bool False if invalid, otherwise true.
603 function _is_valid_nav_menu_item( $item ) {
604 return empty( $item->_invalid );
608 * Return all menu items of a navigation menu.
612 * @global string $_menu_item_sort_prop
613 * @staticvar array $fetched
615 * @param string $menu Menu name, ID, or slug.
616 * @param array $args Optional. Arguments to pass to get_posts().
617 * @return false|array $items Array of menu items, otherwise false.
619 function wp_get_nav_menu_items( $menu, $args = array() ) {
620 $menu = wp_get_nav_menu_object( $menu );
626 static $fetched = array();
628 $items = get_objects_in_term( $menu->term_id, 'nav_menu' );
629 if ( is_wp_error( $items ) ) {
633 $defaults = array( 'order' => 'ASC', 'orderby' => 'menu_order', 'post_type' => 'nav_menu_item',
634 'post_status' => 'publish', 'output' => ARRAY_A, 'output_key' => 'menu_order', 'nopaging' => true );
635 $args = wp_parse_args( $args, $defaults );
636 $args['include'] = $items;
638 if ( ! empty( $items ) ) {
639 $items = get_posts( $args );
644 // Get all posts and terms at once to prime the caches
645 if ( empty( $fetched[$menu->term_id] ) || wp_using_ext_object_cache() ) {
646 $fetched[$menu->term_id] = true;
649 foreach ( $items as $item ) {
650 $object_id = get_post_meta( $item->ID, '_menu_item_object_id', true );
651 $object = get_post_meta( $item->ID, '_menu_item_object', true );
652 $type = get_post_meta( $item->ID, '_menu_item_type', true );
654 if ( 'post_type' == $type )
655 $posts[$object][] = $object_id;
656 elseif ( 'taxonomy' == $type)
657 $terms[$object][] = $object_id;
660 if ( ! empty( $posts ) ) {
661 foreach ( array_keys($posts) as $post_type ) {
662 get_posts( array('post__in' => $posts[$post_type], 'post_type' => $post_type, 'nopaging' => true, 'update_post_term_cache' => false) );
667 if ( ! empty( $terms ) ) {
668 foreach ( array_keys($terms) as $taxonomy ) {
669 get_terms( $taxonomy, array(
670 'include' => $terms[ $taxonomy ],
671 'hierarchical' => false,
678 $items = array_map( 'wp_setup_nav_menu_item', $items );
680 if ( ! is_admin() ) { // Remove invalid items only in front end
681 $items = array_filter( $items, '_is_valid_nav_menu_item' );
684 if ( ARRAY_A == $args['output'] ) {
685 $GLOBALS['_menu_item_sort_prop'] = $args['output_key'];
686 usort($items, '_sort_nav_menu_items');
688 foreach ( $items as $k => $item ) {
689 $items[$k]->{$args['output_key']} = $i++;
694 * Filters the navigation menu items being returned.
698 * @param array $items An array of menu item post objects.
699 * @param object $menu The menu object.
700 * @param array $args An array of arguments used to retrieve menu item objects.
702 return apply_filters( 'wp_get_nav_menu_items', $items, $menu, $args );
706 * Decorates a menu item object with the shared navigation menu item properties.
709 * - ID: The term_id if the menu item represents a taxonomy term.
710 * - attr_title: The title attribute of the link element for this menu item.
711 * - classes: The array of class attribute values for the link element of this menu item.
712 * - db_id: The DB ID of this item as a nav_menu_item object, if it exists (0 if it doesn't exist).
713 * - description: The description of this menu item.
714 * - menu_item_parent: The DB ID of the nav_menu_item that is this item's menu parent, if any. 0 otherwise.
715 * - object: The type of object originally represented, such as "category," "post", or "attachment."
716 * - object_id: The DB ID of the original object this menu item represents, e.g. ID for posts and term_id for categories.
717 * - post_parent: The DB ID of the original object's parent object, if any (0 otherwise).
718 * - post_title: A "no title" label if menu item represents a post that lacks a title.
719 * - target: The target attribute of the link element for this menu item.
720 * - title: The title of this menu item.
721 * - type: The family of objects originally represented, such as "post_type" or "taxonomy."
722 * - type_label: The singular label used to describe this type of menu item.
723 * - url: The URL to which this menu item points.
724 * - xfn: The XFN relationship expressed in the link of this menu item.
725 * - _invalid: Whether the menu item represents an object that no longer exists.
729 * @param object $menu_item The menu item to modify.
730 * @return object $menu_item The menu item with standard menu item properties.
732 function wp_setup_nav_menu_item( $menu_item ) {
733 if ( isset( $menu_item->post_type ) ) {
734 if ( 'nav_menu_item' == $menu_item->post_type ) {
735 $menu_item->db_id = (int) $menu_item->ID;
736 $menu_item->menu_item_parent = ! isset( $menu_item->menu_item_parent ) ? get_post_meta( $menu_item->ID, '_menu_item_menu_item_parent', true ) : $menu_item->menu_item_parent;
737 $menu_item->object_id = ! isset( $menu_item->object_id ) ? get_post_meta( $menu_item->ID, '_menu_item_object_id', true ) : $menu_item->object_id;
738 $menu_item->object = ! isset( $menu_item->object ) ? get_post_meta( $menu_item->ID, '_menu_item_object', true ) : $menu_item->object;
739 $menu_item->type = ! isset( $menu_item->type ) ? get_post_meta( $menu_item->ID, '_menu_item_type', true ) : $menu_item->type;
741 if ( 'post_type' == $menu_item->type ) {
742 $object = get_post_type_object( $menu_item->object );
744 $menu_item->type_label = $object->labels->singular_name;
746 $menu_item->type_label = $menu_item->object;
747 $menu_item->_invalid = true;
750 $menu_item->url = get_permalink( $menu_item->object_id );
752 $original_object = get_post( $menu_item->object_id );
753 /** This filter is documented in wp-includes/post-template.php */
754 $original_title = apply_filters( 'the_title', $original_object->post_title, $original_object->ID );
756 if ( '' === $original_title ) {
757 /* translators: %d: ID of a post */
758 $original_title = sprintf( __( '#%d (no title)' ), $original_object->ID );
761 $menu_item->title = '' == $menu_item->post_title ? $original_title : $menu_item->post_title;
763 } elseif ( 'post_type_archive' == $menu_item->type ) {
764 $object = get_post_type_object( $menu_item->object );
766 $menu_item->title = '' == $menu_item->post_title ? $object->labels->archives : $menu_item->post_title;
767 $post_type_description = $object->description;
769 $menu_item->_invalid = true;
770 $post_type_description = '';
773 $menu_item->type_label = __( 'Post Type Archive' );
774 $post_content = wp_trim_words( $menu_item->post_content, 200 );
775 $post_type_description = '' == $post_content ? $post_type_description : $post_content;
776 $menu_item->url = get_post_type_archive_link( $menu_item->object );
777 } elseif ( 'taxonomy' == $menu_item->type ) {
778 $object = get_taxonomy( $menu_item->object );
780 $menu_item->type_label = $object->labels->singular_name;
782 $menu_item->type_label = $menu_item->object;
783 $menu_item->_invalid = true;
786 $term_url = get_term_link( (int) $menu_item->object_id, $menu_item->object );
787 $menu_item->url = !is_wp_error( $term_url ) ? $term_url : '';
789 $original_title = get_term_field( 'name', $menu_item->object_id, $menu_item->object, 'raw' );
790 if ( is_wp_error( $original_title ) )
791 $original_title = false;
792 $menu_item->title = '' == $menu_item->post_title ? $original_title : $menu_item->post_title;
795 $menu_item->type_label = __('Custom Link');
796 $menu_item->title = $menu_item->post_title;
797 $menu_item->url = ! isset( $menu_item->url ) ? get_post_meta( $menu_item->ID, '_menu_item_url', true ) : $menu_item->url;
800 $menu_item->target = ! isset( $menu_item->target ) ? get_post_meta( $menu_item->ID, '_menu_item_target', true ) : $menu_item->target;
803 * Filters a navigation menu item's title attribute.
807 * @param string $item_title The menu item title attribute.
809 $menu_item->attr_title = ! isset( $menu_item->attr_title ) ? apply_filters( 'nav_menu_attr_title', $menu_item->post_excerpt ) : $menu_item->attr_title;
811 if ( ! isset( $menu_item->description ) ) {
813 * Filters a navigation menu item's description.
817 * @param string $description The menu item description.
819 $menu_item->description = apply_filters( 'nav_menu_description', wp_trim_words( $menu_item->post_content, 200 ) );
822 $menu_item->classes = ! isset( $menu_item->classes ) ? (array) get_post_meta( $menu_item->ID, '_menu_item_classes', true ) : $menu_item->classes;
823 $menu_item->xfn = ! isset( $menu_item->xfn ) ? get_post_meta( $menu_item->ID, '_menu_item_xfn', true ) : $menu_item->xfn;
825 $menu_item->db_id = 0;
826 $menu_item->menu_item_parent = 0;
827 $menu_item->object_id = (int) $menu_item->ID;
828 $menu_item->type = 'post_type';
830 $object = get_post_type_object( $menu_item->post_type );
831 $menu_item->object = $object->name;
832 $menu_item->type_label = $object->labels->singular_name;
834 if ( '' === $menu_item->post_title ) {
835 /* translators: %d: ID of a post */
836 $menu_item->post_title = sprintf( __( '#%d (no title)' ), $menu_item->ID );
839 $menu_item->title = $menu_item->post_title;
840 $menu_item->url = get_permalink( $menu_item->ID );
841 $menu_item->target = '';
843 /** This filter is documented in wp-includes/nav-menu.php */
844 $menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' );
846 /** This filter is documented in wp-includes/nav-menu.php */
847 $menu_item->description = apply_filters( 'nav_menu_description', '' );
848 $menu_item->classes = array();
849 $menu_item->xfn = '';
851 } elseif ( isset( $menu_item->taxonomy ) ) {
852 $menu_item->ID = $menu_item->term_id;
853 $menu_item->db_id = 0;
854 $menu_item->menu_item_parent = 0;
855 $menu_item->object_id = (int) $menu_item->term_id;
856 $menu_item->post_parent = (int) $menu_item->parent;
857 $menu_item->type = 'taxonomy';
859 $object = get_taxonomy( $menu_item->taxonomy );
860 $menu_item->object = $object->name;
861 $menu_item->type_label = $object->labels->singular_name;
863 $menu_item->title = $menu_item->name;
864 $menu_item->url = get_term_link( $menu_item, $menu_item->taxonomy );
865 $menu_item->target = '';
866 $menu_item->attr_title = '';
867 $menu_item->description = get_term_field( 'description', $menu_item->term_id, $menu_item->taxonomy );
868 $menu_item->classes = array();
869 $menu_item->xfn = '';
874 * Filters a navigation menu item object.
878 * @param object $menu_item The menu item object.
880 return apply_filters( 'wp_setup_nav_menu_item', $menu_item );
884 * Get the menu items associated with a particular object.
888 * @param int $object_id The ID of the original object.
889 * @param string $object_type The type of object, such as "taxonomy" or "post_type."
890 * @param string $taxonomy If $object_type is "taxonomy", $taxonomy is the name of the tax that $object_id belongs to
891 * @return array The array of menu item IDs; empty array if none;
893 function wp_get_associated_nav_menu_items( $object_id = 0, $object_type = 'post_type', $taxonomy = '' ) {
894 $object_id = (int) $object_id;
895 $menu_item_ids = array();
897 $query = new WP_Query;
898 $menu_items = $query->query(
900 'meta_key' => '_menu_item_object_id',
901 'meta_value' => $object_id,
902 'post_status' => 'any',
903 'post_type' => 'nav_menu_item',
904 'posts_per_page' => -1,
907 foreach ( (array) $menu_items as $menu_item ) {
908 if ( isset( $menu_item->ID ) && is_nav_menu_item( $menu_item->ID ) ) {
909 $menu_item_type = get_post_meta( $menu_item->ID, '_menu_item_type', true );
911 'post_type' == $object_type &&
912 'post_type' == $menu_item_type
914 $menu_item_ids[] = (int) $menu_item->ID;
916 'taxonomy' == $object_type &&
917 'taxonomy' == $menu_item_type &&
918 get_post_meta( $menu_item->ID, '_menu_item_object', true ) == $taxonomy
920 $menu_item_ids[] = (int) $menu_item->ID;
925 return array_unique( $menu_item_ids );
929 * Callback for handling a menu item when its original object is deleted.
934 * @param int $object_id The ID of the original object being trashed.
937 function _wp_delete_post_menu_item( $object_id = 0 ) {
938 $object_id = (int) $object_id;
940 $menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'post_type' );
942 foreach ( (array) $menu_item_ids as $menu_item_id ) {
943 wp_delete_post( $menu_item_id, true );
948 * Serves as a callback for handling a menu item when its original object is deleted.
953 * @param int $object_id Optional. The ID of the original object being trashed. Default 0.
954 * @param int $tt_id Term taxonomy ID. Unused.
955 * @param string $taxonomy Taxonomy slug.
957 function _wp_delete_tax_menu_item( $object_id = 0, $tt_id, $taxonomy ) {
958 $object_id = (int) $object_id;
960 $menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'taxonomy', $taxonomy );
962 foreach ( (array) $menu_item_ids as $menu_item_id ) {
963 wp_delete_post( $menu_item_id, true );
968 * Automatically add newly published page objects to menus with that as an option.
973 * @param string $new_status The new status of the post object.
974 * @param string $old_status The old status of the post object.
975 * @param object $post The post object being transitioned from one status to another.
977 function _wp_auto_add_pages_to_menu( $new_status, $old_status, $post ) {
978 if ( 'publish' != $new_status || 'publish' == $old_status || 'page' != $post->post_type )
980 if ( ! empty( $post->post_parent ) )
982 $auto_add = get_option( 'nav_menu_options' );
983 if ( empty( $auto_add ) || ! is_array( $auto_add ) || ! isset( $auto_add['auto_add'] ) )
985 $auto_add = $auto_add['auto_add'];
986 if ( empty( $auto_add ) || ! is_array( $auto_add ) )
990 'menu-item-object-id' => $post->ID,
991 'menu-item-object' => $post->post_type,
992 'menu-item-type' => 'post_type',
993 'menu-item-status' => 'publish',
996 foreach ( $auto_add as $menu_id ) {
997 $items = wp_get_nav_menu_items( $menu_id, array( 'post_status' => 'publish,draft' ) );
998 if ( ! is_array( $items ) )
1000 foreach ( $items as $item ) {
1001 if ( $post->ID == $item->object_id )
1004 wp_update_nav_menu_item( $menu_id, 0, $args );