WordPressを読む 69 /blog/wp-includes/nav-menu.php
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$menu ) return false; $menu_obj = get_term( $menu, 'nav_menu' ); if ( ! $menu_obj ) $menu_obj = get_term_by( 'slug', $menu, 'nav_menu' ); if ( ! $menu_obj ) $menu_obj = get_term_by( 'name', $menu, 'nav_menu' ); if ( ! $menu_obj ) $menu_obj = false; return $menu_obj; } /** * Check if the given ID is a navigation menu. * * Returns true if it is; false otherwise. * * @since 3.0.0 * * @param int|string $menu The menu to check (ID, slug, or name). * @return bool Whether the menu exists. */ function is_nav_menu( $menu ) { if ( ! $menu ) return false; $menu_obj = wp_get_nav_menu_object( $menu ); if ( $menu_obj && ! is_wp_error( $menu_obj ) && ! empty( $menu_obj->taxonomy ) && 'nav_menu' == $menu_obj->taxonomy ) return true; return false; } /** * Register navigation menus for a theme. * * @since 3.0.0 * * @param array $locations Associative array of menu location identifiers (like a slug) and descriptive text. */ function register_nav_menus( $locations = array() ) { global $_wp_registered_nav_menus; add_theme_support( 'menus' ); $_wp_registered_nav_menus = array_merge( (array) $_wp_registered_nav_menus, $locations ); } /** * Unregisters a navigation menu for a theme. * * @param array $location the menu location identifier * * @return bool True on success, false on failure. */ function unregister_nav_menu( $location ) { global $_wp_registered_nav_menus; if ( is_array( $_wp_registered_nav_menus ) && isset( $_wp_registered_nav_menus[$location] ) ) { unset( $_wp_registered_nav_menus[$location] ); if ( empty( $_wp_registered_nav_menus ) ) { _remove_theme_support( 'menus' ); } return true; } return false; } /** * Register a navigation menu for a theme. * * @since 3.0.0 * * @param string $location Menu location identifier, like a slug. * @param string $description Menu location descriptive text. */ function register_nav_menu( $location, $description ) { register_nav_menus( array( $location => $description ) ); } /** * Returns an array of all registered navigation menus in a theme * * @since 3.0.0 * @return array */ function get_registered_nav_menus() { global $_wp_registered_nav_menus; if ( isset( $_wp_registered_nav_menus ) ) return $_wp_registered_nav_menus; return array(); } /** * Returns an array with the registered navigation menu locations and the menu assigned to it * * @since 3.0.0 * @return array */ function get_nav_menu_locations() { $locations = get_theme_mod( 'nav_menu_locations' ); return ( is_array( $locations ) ) ? $locations : array(); } /** * Whether a registered nav menu location has a menu assigned to it. * * @since 3.0.0 * @param string $location Menu location identifier. * @return bool Whether location has a menu. */ function has_nav_menu( $location ) { global $_wp_registered_nav_menus; if ( ! isset( $_wp_registered_nav_menus[ $location ] ) ) { return false; } $locations = get_nav_menu_locations(); return ( ! empty( $locations[ $location ] ) ); } /** * Determine whether the given ID is a nav menu item. * * @since 3.0.0 * * @param int $menu_item_id The ID of the potential nav menu item. * @return bool Whether the given ID is that of a nav menu item. */ function is_nav_menu_item( $menu_item_id = 0 ) { return ( ! is_wp_error( $menu_item_id ) && ( 'nav_menu_item' == get_post_type( $menu_item_id ) ) ); } /** * Create a Navigation Menu. * * @since 3.0.0 * * @param string $menu_name Menu name. * @return int|WP_Error Menu ID on success, WP_Error object on failure. */ function wp_create_nav_menu( $menu_name ) { return wp_update_nav_menu_object( 0, array( 'menu-name' => $menu_name ) ); } /** * Delete a Navigation Menu. * * @since 3.0.0 * * @param string $menu Menu ID, slug, or name. * @return bool|WP_Error True on success, false or WP_Error object on failure. */ function wp_delete_nav_menu( $menu ) { $menu = wp_get_nav_menu_object( $menu ); if ( ! $menu ) return false; $menu_objects = get_objects_in_term( $menu->term_id, 'nav_menu' ); if ( ! empty( $menu_objects ) ) { foreach ( $menu_objects as $item ) { wp_delete_post( $item ); } } $result = wp_delete_term( $menu->term_id, 'nav_menu' ); // Remove this menu from any locations. $locations = get_nav_menu_locations(); foreach ( $locations as $location => $menu_id ) { if ( $menu_id == $menu->term_id ) $locations[ $location ] = 0; } set_theme_mod( 'nav_menu_locations', $locations ); if ( $result && !is_wp_error($result) ) /** * Fires after a navigation menu has been successfully deleted. * * @since 3.0.0 * * @param int $term_id ID of the deleted menu. */ do_action( 'wp_delete_nav_menu', $menu->term_id ); return $result; } /** * Save the properties of a menu or create a new menu with those properties. * * @since 3.0.0 * * @param int $menu_id The ID of the menu or "0" to create a new menu. * @param array $menu_data The array of menu data. * @return int|WP_Error Menu ID on success, WP_Error object on failure. */ function wp_update_nav_menu_object( $menu_id = 0, $menu_data = array() ) { $menu_id = (int) $menu_id; $_menu = wp_get_nav_menu_object( $menu_id ); $args = array( 'description' => ( isset( $menu_data['description'] ) ? $menu_data['description'] : '' ), 'name' => ( isset( $menu_data['menu-name'] ) ? $menu_data['menu-name'] : '' ), 'parent' => ( isset( $menu_data['parent'] ) ? (int) $menu_data['parent'] : 0 ), 'slug' => null, ); // double-check that we're not going to have one menu take the name of another $_possible_existing = get_term_by( 'name', $menu_data['menu-name'], 'nav_menu' ); if ( $_possible_existing && ! is_wp_error( $_possible_existing ) && isset( $_possible_existing->term_id ) && $_possible_existing->term_id != $menu_id ) return new WP_Error( 'menu_exists', sprintf( __('The menu name <strong>%s</strong> conflicts with another menu name. Please try another.'), esc_html( $menu_data['menu-name'] ) ) ); // menu doesn't already exist, so create a new menu if ( ! $_menu || is_wp_error( $_menu ) ) { $menu_exists = get_term_by( 'name', $menu_data['menu-name'], 'nav_menu' ); if ( $menu_exists ) return new WP_Error( 'menu_exists', sprintf( __('The menu name <strong>%s</strong> conflicts with another menu name. Please try another.'), esc_html( $menu_data['menu-name'] ) ) ); $_menu = wp_insert_term( $menu_data['menu-name'], 'nav_menu', $args ); if ( is_wp_error( $_menu ) ) return $_menu; /** * Fires after a navigation menu is successfully created. * * @since 3.0.0 * * @param int $term_id ID of the new menu. * @param array $menu_data An array of menu data. */ do_action( 'wp_create_nav_menu', $_menu['term_id'], $menu_data ); return (int) $_menu['term_id']; } if ( ! $_menu || ! isset( $_menu->term_id ) ) return 0; $menu_id = (int) $_menu->term_id; $update_response = wp_update_term( $menu_id, 'nav_menu', $args ); if ( is_wp_error( $update_response ) ) return $update_response; /** * Fires after a navigation menu has been successfully updated. * * @since 3.0.0 * * @param int $menu_id ID of the updated menu. * @param array $menu_data An array of menu data. */ do_action( 'wp_update_nav_menu', $menu_id, $menu_data ); return $menu_id; } /** * Save the properties of a menu item or create a new one. * * @since 3.0.0 * * @param int $menu_id The ID of the menu. Required. If "0", makes the menu item a draft orphan. * @param int $menu_item_db_id The ID of the menu item. If "0", creates a new menu item. * @param array $menu_item_data The menu item's data. * @return int|WP_Error The menu item's database ID or WP_Error object on failure. */ function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0, $menu_item_data = array() ) { $menu_id = (int) $menu_id; $menu_item_db_id = (int) $menu_item_db_id; // make sure that we don't convert non-nav_menu_item objects into nav_menu_item objects if ( ! empty( $menu_item_db_id ) && ! is_nav_menu_item( $menu_item_db_id ) ) return new WP_Error( 'update_nav_menu_item_failed', __( 'The given object ID is not that of a menu item.' ) ); $menu = wp_get_nav_menu_object( $menu_id ); if ( ! $menu && 0 !== $menu_id ) { return new WP_Error( 'invalid_menu_id', __( 'Invalid menu ID.' ) ); } if ( is_wp_error( $menu ) ) { return $menu; } $defaults = array( 'menu-item-db-id' => $menu_item_db_id, 'menu-item-object-id' => 0, 'menu-item-object' => '', 'menu-item-parent-id' => 0, 'menu-item-position' => 0, 'menu-item-type' => 'custom', 'menu-item-title' => '', 'menu-item-url' => '', 'menu-item-description' => '', 'menu-item-attr-title' => '', 'menu-item-target' => '', 'menu-item-classes' => '', 'menu-item-xfn' => '', 'menu-item-status' => '', ); $args = wp_parse_args( $menu_item_data, $defaults ); if ( 0 == $menu_id ) { $args['menu-item-position'] = 1; } elseif ( 0 == (int) $args['menu-item-position'] ) { $menu_items = 0 == $menu_id ? array() : (array) wp_get_nav_menu_items( $menu_id, array( 'post_status' => 'publish,draft' ) ); $last_item = array_pop( $menu_items ); $args['menu-item-position'] = ( $last_item && isset( $last_item->menu_order ) ) ? 1 + $last_item->menu_order : count( $menu_items ); } $original_parent = 0 < $menu_item_db_id ? get_post_field( 'post_parent', $menu_item_db_id ) : 0; if ( 'custom' != $args['menu-item-type'] ) { /* if non-custom menu item, then: * use original object's URL * blank default title to sync with original object's */ $args['menu-item-url'] = ''; $original_title = ''; if ( 'taxonomy' == $args['menu-item-type'] ) { $original_parent = get_term_field( 'parent', $args['menu-item-object-id'], $args['menu-item-object'], 'raw' ); $original_title = get_term_field( 'name', $args['menu-item-object-id'], $args['menu-item-object'], 'raw' ); } elseif ( 'post_type' == $args['menu-item-type'] ) { $original_object = get_post( $args['menu-item-object-id'] ); $original_parent = (int) $original_object->post_parent; $original_title = $original_object->post_title; } if ( $args['menu-item-title'] == $original_title ) $args['menu-item-title'] = ''; // hack to get wp to create a post object when too many properties are empty if ( '' == $args['menu-item-title'] && '' == $args['menu-item-description'] ) $args['menu-item-description'] = ' '; } // Populate the menu item object $post = array( 'menu_order' => $args['menu-item-position'], 'ping_status' => 0, 'post_content' => $args['menu-item-description'], 'post_excerpt' => $args['menu-item-attr-title'], 'post_parent' => $original_parent, 'post_title' => $args['menu-item-title'], 'post_type' => 'nav_menu_item', ); $update = 0 != $menu_item_db_id; // New menu item. Default is draft status if ( ! $update ) { $post['ID'] = 0; $post['post_status'] = 'publish' == $args['menu-item-status'] ? 'publish' : 'draft'; $menu_item_db_id = wp_insert_post( $post ); if ( ! $menu_item_db_id || is_wp_error( $menu_item_db_id ) ) return $menu_item_db_id; } // Associate the menu item with the menu term // Only set the menu term if it isn't set to avoid unnecessary wp_get_object_terms() if ( $menu_id && ( ! $update || ! is_object_in_term( $menu_item_db_id, 'nav_menu', (int) $menu->term_id ) ) ) { wp_set_object_terms( $menu_item_db_id, array( $menu->term_id ), 'nav_menu' ); } if ( 'custom' == $args['menu-item-type'] ) { $args['menu-item-object-id'] = $menu_item_db_id; $args['menu-item-object'] = 'custom'; } $menu_item_db_id = (int) $menu_item_db_id; update_post_meta( $menu_item_db_id, '_menu_item_type', sanitize_key($args['menu-item-type']) ); update_post_meta( $menu_item_db_id, '_menu_item_menu_item_parent', strval( (int) $args['menu-item-parent-id'] ) ); update_post_meta( $menu_item_db_id, '_menu_item_object_id', strval( (int) $args['menu-item-object-id'] ) ); update_post_meta( $menu_item_db_id, '_menu_item_object', sanitize_key($args['menu-item-object']) ); update_post_meta( $menu_item_db_id, '_menu_item_target', sanitize_key($args['menu-item-target']) ); $args['menu-item-classes'] = array_map( 'sanitize_html_class', explode( ' ', $args['menu-item-classes'] ) ); $args['menu-item-xfn'] = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['menu-item-xfn'] ) ) ); update_post_meta( $menu_item_db_id, '_menu_item_classes', $args['menu-item-classes'] ); update_post_meta( $menu_item_db_id, '_menu_item_xfn', $args['menu-item-xfn'] ); update_post_meta( $menu_item_db_id, '_menu_item_url', esc_url_raw($args['menu-item-url']) ); if ( 0 == $menu_id ) update_post_meta( $menu_item_db_id, '_menu_item_orphaned', (string) time() ); elseif ( get_post_meta( $menu_item_db_id, '_menu_item_orphaned' ) ) delete_post_meta( $menu_item_db_id, '_menu_item_orphaned' ); // Update existing menu item. Default is publish status if ( $update ) { $post['ID'] = $menu_item_db_id; $post['post_status'] = 'draft' == $args['menu-item-status'] ? 'draft' : 'publish'; wp_update_post( $post ); } /** * Fires after a navigation menu item has been updated. * * @since 3.0.0 * * @see wp_update_nav_menu_items() * * @param int $menu_id ID of the updated menu. * @param int $menu_item_db_id ID of the updated menu item. * @param array $args An array of arguments used to update a menu item. */ do_action( 'wp_update_nav_menu_item', $menu_id, $menu_item_db_id, $args ); return $menu_item_db_id; } /** * Returns all navigation menu objects. * * @since 3.0.0 * * @param array $args Array of arguments passed on to get_terms(). * @return array menu objects */ function wp_get_nav_menus( $args = array() ) { $defaults = array( 'hide_empty' => false, 'orderby' => 'none' ); $args = wp_parse_args( $args, $defaults ); /** * Filter the navigation menu objects being returned. * * @since 3.0.0 * * @see get_terms() * * @param array $menus An array of menu objects. * @param array $args An array of arguments used to retrieve menu objects. */ return apply_filters( 'wp_get_nav_menus', get_terms( 'nav_menu', $args), $args ); } /** * Sort menu items by the desired key. * * @since 3.0.0 * @access private * * @param object $a The first object to compare * @param object $b The second object to compare * @return int -1, 0, or 1 if $a is considered to be respectively less than, equal to, or greater than $b. */ function _sort_nav_menu_items( $a, $b ) { global $_menu_item_sort_prop; if ( empty( $_menu_item_sort_prop ) ) return 0; if ( ! isset( $a->$_menu_item_sort_prop ) || ! isset( $b->$_menu_item_sort_prop ) ) return 0; $_a = (int) $a->$_menu_item_sort_prop; $_b = (int) $b->$_menu_item_sort_prop; if ( $a->$_menu_item_sort_prop == $b->$_menu_item_sort_prop ) return 0; elseif ( $_a == $a->$_menu_item_sort_prop && $_b == $b->$_menu_item_sort_prop ) return $_a < $_b ? -1 : 1; else return strcmp( $a->$_menu_item_sort_prop, $b->$_menu_item_sort_prop ); } /** * Returns if a menu item is valid. Bug #13958 * * @since 3.2.0 * @access private * * @param object $menu_item The menu item to check * @return bool false if invalid, else true. */ function _is_valid_nav_menu_item( $item ) { if ( ! empty( $item->_invalid ) ) return false; return true; } /** * Returns all menu items of a navigation menu. * * @since 3.0.0 * * @param string $menu menu name, id, or slug * @param string $args * @return mixed $items array of menu items, else false. */ function wp_get_nav_menu_items( $menu, $args = array() ) { $menu = wp_get_nav_menu_object( $menu ); if ( ! $menu ) return false; static $fetched = array(); $items = get_objects_in_term( $menu->term_id, 'nav_menu' ); if ( empty( $items ) ) return $items; $defaults = array( 'order' => 'ASC', 'orderby' => 'menu_order', 'post_type' => 'nav_menu_item', 'post_status' => 'publish', 'output' => ARRAY_A, 'output_key' => 'menu_order', 'nopaging' => true ); $args = wp_parse_args( $args, $defaults ); $args['include'] = $items; $items = get_posts( $args ); if ( is_wp_error( $items ) || ! is_array( $items ) ) return false; // Get all posts and terms at once to prime the caches if ( empty( $fetched[$menu->term_id] ) || wp_using_ext_object_cache() ) { $fetched[$menu->term_id] = true; $posts = array(); $terms = array(); foreach ( $items as $item ) { $object_id = get_post_meta( $item->ID, '_menu_item_object_id', true ); $object = get_post_meta( $item->ID, '_menu_item_object', true ); $type = get_post_meta( $item->ID, '_menu_item_type', true ); if ( 'post_type' == $type ) $posts[$object][] = $object_id; elseif ( 'taxonomy' == $type) $terms[$object][] = $object_id; } if ( ! empty( $posts ) ) { foreach ( array_keys($posts) as $post_type ) { get_posts( array('post__in' => $posts[$post_type], 'post_type' => $post_type, 'nopaging' => true, 'update_post_term_cache' => false) ); } } unset($posts); if ( ! empty( $terms ) ) { foreach ( array_keys($terms) as $taxonomy ) { get_terms($taxonomy, array('include' => $terms[$taxonomy]) ); } } unset($terms); } $items = array_map( 'wp_setup_nav_menu_item', $items ); if ( ! is_admin() ) // Remove invalid items only in frontend $items = array_filter( $items, '_is_valid_nav_menu_item' ); if ( ARRAY_A == $args['output'] ) { $GLOBALS['_menu_item_sort_prop'] = $args['output_key']; usort($items, '_sort_nav_menu_items'); $i = 1; foreach( $items as $k => $item ) { $items[$k]->$args['output_key'] = $i++; } } /** * Filter the navigation menu items being returned. * * @since 3.0.0 * * @param array $items An array of menu item post objects. * @param object $menu The menu object. * @param array $args An array of arguments used to retrieve menu item objects. */ return apply_filters( 'wp_get_nav_menu_items', $items, $menu, $args ); } /** * Decorates a menu item object with the shared navigation menu item properties. * * Properties: * - db_id: The DB ID of this item as a nav_menu_item object, if it exists (0 if it doesn't exist). * - object_id: The DB ID of the original object this menu item represents, e.g. ID for posts and term_id for categories. * - type: The family of objects originally represented, such as "post_type" or "taxonomy." * - object: The type of object originally represented, such as "category," "post", or "attachment." * - type_label: The singular label used to describe this type of menu item. * - post_parent: The DB ID of the original object's parent object, if any (0 otherwise). * - menu_item_parent: The DB ID of the nav_menu_item that is this item's menu parent, if any. 0 otherwise. * - url: The URL to which this menu item points. * - title: The title of this menu item. * - target: The target attribute of the link element for this menu item. * - attr_title: The title attribute of the link element for this menu item. * - classes: The array of class attribute values for the link element of this menu item. * - xfn: The XFN relationship expressed in the link of this menu item. * - description: The description of this menu item. * * @since 3.0.0 * * @param object $menu_item The menu item to modify. * @return object $menu_item The menu item with standard menu item properties. */ function wp_setup_nav_menu_item( $menu_item ) { if ( isset( $menu_item->post_type ) ) { if ( 'nav_menu_item' == $menu_item->post_type ) { $menu_item->db_id = (int) $menu_item->ID; $menu_item->menu_item_parent = empty( $menu_item->menu_item_parent ) ? get_post_meta( $menu_item->ID, '_menu_item_menu_item_parent', true ) : $menu_item->menu_item_parent; $menu_item->object_id = empty( $menu_item->object_id ) ? get_post_meta( $menu_item->ID, '_menu_item_object_id', true ) : $menu_item->object_id; $menu_item->object = empty( $menu_item->object ) ? get_post_meta( $menu_item->ID, '_menu_item_object', true ) : $menu_item->object; $menu_item->type = empty( $menu_item->type ) ? get_post_meta( $menu_item->ID, '_menu_item_type', true ) : $menu_item->type; if ( 'post_type' == $menu_item->type ) { $object = get_post_type_object( $menu_item->object ); if ( $object ) { $menu_item->type_label = $object->labels->singular_name; } else { $menu_item->type_label = $menu_item->object; $menu_item->_invalid = true; } $menu_item->url = get_permalink( $menu_item->object_id ); $original_object = get_post( $menu_item->object_id ); $original_title = $original_object->post_title; $menu_item->title = '' == $menu_item->post_title ? $original_title : $menu_item->post_title; } elseif ( 'taxonomy' == $menu_item->type ) { $object = get_taxonomy( $menu_item->object ); if ( $object ) { $menu_item->type_label = $object->labels->singular_name; } else { $menu_item->type_label = $menu_item->object; $menu_item->_invalid = true; } $term_url = get_term_link( (int) $menu_item->object_id, $menu_item->object ); $menu_item->url = !is_wp_error( $term_url ) ? $term_url : ''; $original_title = get_term_field( 'name', $menu_item->object_id, $menu_item->object, 'raw' ); if ( is_wp_error( $original_title ) ) $original_title = false; $menu_item->title = '' == $menu_item->post_title ? $original_title : $menu_item->post_title; } else { $menu_item->type_label = __('Custom'); $menu_item->title = $menu_item->post_title; $menu_item->url = empty( $menu_item->url ) ? get_post_meta( $menu_item->ID, '_menu_item_url', true ) : $menu_item->url; } $menu_item->target = empty( $menu_item->target ) ? get_post_meta( $menu_item->ID, '_menu_item_target', true ) : $menu_item->target; /** * Filter a navigation menu item's title attribute. * * @since 3.0.0 * * @param string $item_title The menu item title attribute. */ $menu_item->attr_title = empty( $menu_item->attr_title ) ? apply_filters( 'nav_menu_attr_title', $menu_item->post_excerpt ) : $menu_item->attr_title; if ( empty( $menu_item->description ) ) { /** * Filter a navigation menu item's description. * * @since 3.0.0 * * @param string $description The menu item description. */ $menu_item->description = apply_filters( 'nav_menu_description', wp_trim_words( $menu_item->post_content, 200 ) ); } $menu_item->classes = empty( $menu_item->classes ) ? (array) get_post_meta( $menu_item->ID, '_menu_item_classes', true ) : $menu_item->classes; $menu_item->xfn = empty( $menu_item->xfn ) ? get_post_meta( $menu_item->ID, '_menu_item_xfn', true ) : $menu_item->xfn; } else { $menu_item->db_id = 0; $menu_item->menu_item_parent = 0; $menu_item->object_id = (int) $menu_item->ID; $menu_item->type = 'post_type'; $object = get_post_type_object( $menu_item->post_type ); $menu_item->object = $object->name; $menu_item->type_label = $object->labels->singular_name; if ( '' === $menu_item->post_title ) $menu_item->post_title = sprintf( __( '#%d (no title)' ), $menu_item->ID ); $menu_item->title = $menu_item->post_title; $menu_item->url = get_permalink( $menu_item->ID ); $menu_item->target = ''; /** This filter is documented in wp-includes/nav-menu.php */ $menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' ); /** This filter is documented in wp-includes/nav-menu.php */ $menu_item->description = apply_filters( 'nav_menu_description', '' ); $menu_item->classes = array(); $menu_item->xfn = ''; } } elseif ( isset( $menu_item->taxonomy ) ) { $menu_item->ID = $menu_item->term_id; $menu_item->db_id = 0; $menu_item->menu_item_parent = 0; $menu_item->object_id = (int) $menu_item->term_id; $menu_item->post_parent = (int) $menu_item->parent; $menu_item->type = 'taxonomy'; $object = get_taxonomy( $menu_item->taxonomy ); $menu_item->object = $object->name; $menu_item->type_label = $object->labels->singular_name; $menu_item->title = $menu_item->name; $menu_item->url = get_term_link( $menu_item, $menu_item->taxonomy ); $menu_item->target = ''; $menu_item->attr_title = ''; $menu_item->description = get_term_field( 'description', $menu_item->term_id, $menu_item->taxonomy ); $menu_item->classes = array(); $menu_item->xfn = ''; } /** * Filter a navigation menu item object. * * @since 3.0.0 * * @param object $menu_item The menu item object. */ return apply_filters( 'wp_setup_nav_menu_item', $menu_item ); } /** * Get the menu items associated with a particular object. * * @since 3.0.0 * * @param int $object_id The ID of the original object. * @param string $object_type The type of object, such as "taxonomy" or "post_type." * @param string $taxonomy If $object_type is "taxonomy", $taxonomy is the name of the tax that $object_id belongs to * @return array The array of menu item IDs; empty array if none; */ function wp_get_associated_nav_menu_items( $object_id = 0, $object_type = 'post_type', $taxonomy = '' ) { $object_id = (int) $object_id; $menu_item_ids = array(); $query = new WP_Query; $menu_items = $query->query( array( 'meta_key' => '_menu_item_object_id', 'meta_value' => $object_id, 'post_status' => 'any', 'post_type' => 'nav_menu_item', 'posts_per_page' => -1, ) ); foreach( (array) $menu_items as $menu_item ) { if ( isset( $menu_item->ID ) && is_nav_menu_item( $menu_item->ID ) ) { $menu_item_type = get_post_meta( $menu_item->ID, '_menu_item_type', true ); if ( 'post_type' == $object_type && 'post_type' == $menu_item_type ) { $menu_item_ids[] = (int) $menu_item->ID; } else if ( 'taxonomy' == $object_type && 'taxonomy' == $menu_item_type && get_post_meta( $menu_item->ID, '_menu_item_object', true ) == $taxonomy ) { $menu_item_ids[] = (int) $menu_item->ID; } } } return array_unique( $menu_item_ids ); } /** * Callback for handling a menu item when its original object is deleted. * * @since 3.0.0 * @access private * * @param int $object_id The ID of the original object being trashed. * */ function _wp_delete_post_menu_item( $object_id = 0 ) { $object_id = (int) $object_id; $menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'post_type' ); foreach( (array) $menu_item_ids as $menu_item_id ) { wp_delete_post( $menu_item_id, true ); } } /** * Callback for handling a menu item when its original object is deleted. * * @since 3.0.0 * @access private * * @param int $object_id The ID of the original object being trashed. * */ function _wp_delete_tax_menu_item( $object_id = 0, $tt_id, $taxonomy ) { $object_id = (int) $object_id; $menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'taxonomy', $taxonomy ); foreach( (array) $menu_item_ids as $menu_item_id ) { wp_delete_post( $menu_item_id, true ); } } /** * Automatically add newly published page objects to menus with that as an option. * * @since 3.0.0 * @access private * * @param string $new_status The new status of the post object. * @param string $old_status The old status of the post object. * @param object $post The post object being transitioned from one status to another. * @return void */ function _wp_auto_add_pages_to_menu( $new_status, $old_status, $post ) { if ( 'publish' != $new_status || 'publish' == $old_status || 'page' != $post->post_type ) return; if ( ! empty( $post->post_parent ) ) return; $auto_add = get_option( 'nav_menu_options' ); if ( empty( $auto_add ) || ! is_array( $auto_add ) || ! isset( $auto_add['auto_add'] ) ) return; $auto_add = $auto_add['auto_add']; if ( empty( $auto_add ) || ! is_array( $auto_add ) ) return; $args = array( 'menu-item-object-id' => $post->ID, 'menu-item-object' => $post->post_type, 'menu-item-type' => 'post_type', 'menu-item-status' => 'publish', ); foreach ( $auto_add as $menu_id ) { $items = wp_get_nav_menu_items( $menu_id, array( 'post_status' => 'publish,draft' ) ); if ( ! is_array( $items ) ) continue; foreach ( $items as $item ) { if ( $post->ID == $item->object_id ) continue 2; } wp_update_nav_menu_item( $menu_id, 0, $args ); } } |