argument exists then the slug will be checked to see if it is not * a valid term. If that check succeeds (it is not a valid term), then it is * added and the term id is given. If it fails, then a check is made to whether * the taxonomy is hierarchical and the parent argument is not empty. If the * second check succeeds, the term will be inserted and the term id will be * given. * * @package WordPress * @subpackage Taxonomy * @since 2.3.0 * @uses $wpdb * * @uses apply_filters() Calls 'pre_insert_term' hook with term and taxonomy as parameters. * @uses do_action() Calls 'create_term' hook with the term id and taxonomy id as parameters. * @uses do_action() Calls 'create_$taxonomy' hook with term id and taxonomy id as parameters. * @uses apply_filters() Calls 'term_id_filter' hook with term id and taxonomy id as parameters. * @uses do_action() Calls 'created_term' hook with the term id and taxonomy id as parameters. * @uses do_action() Calls 'created_$taxonomy' hook with term id and taxonomy id as parameters. * * @param string $term The term to add or update. * @param string $taxonomy The taxonomy to which to add the term * @param array|string $args Change the values of the inserted term * @return array|WP_Error The Term ID and Term Taxonomy ID */ function wp_insert_term( $term, $taxonomy, $args = array() ) { global $wpdb; if ( ! taxonomy_exists($taxonomy) ) return new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); $term = apply_filters( 'pre_insert_term', $term, $taxonomy ); if ( is_wp_error( $term ) ) return $term; if ( is_int($term) && 0 == $term ) return new WP_Error('invalid_term_id', __('Invalid term ID')); if ( '' == trim($term) ) return new WP_Error('empty_term_name', __('A name is required for this term')); $defaults = array( 'alias_of' => '', 'description' => '', 'parent' => 0, 'slug' => ''); $args = wp_parse_args($args, $defaults); $args['name'] = $term; $args['taxonomy'] = $taxonomy; $args = sanitize_term($args, $taxonomy, 'db'); extract($args, EXTR_SKIP); // expected_slashed ($name) $name = stripslashes($name); $description = stripslashes($description); if ( empty($slug) ) $slug = sanitize_title($name); $term_group = 0; if ( $alias_of ) { $alias = $wpdb->get_row( $wpdb->prepare( "SELECT term_id, term_group FROM $wpdb->terms WHERE slug = %s", $alias_of) ); if ( $alias->term_group ) { // The alias we want is already in a group, so let's use that one. $term_group = $alias->term_group; } else { // The alias isn't in a group, so let's create a new one and firstly add the alias term to it. $term_group = $wpdb->get_var("SELECT MAX(term_group) FROM $wpdb->terms") + 1; do_action( 'edit_terms', $alias->term_id ); $wpdb->update($wpdb->terms, compact('term_group'), array('term_id' => $alias->term_id) ); do_action( 'edited_terms', $alias->term_id ); } } if ( $term_id = term_exists($slug) ) { $existing_term = $wpdb->get_row( $wpdb->prepare( "SELECT name FROM $wpdb->terms WHERE term_id = %d", $term_id), ARRAY_A ); // We've got an existing term in the same taxonomy, which matches the name of the new term: if ( is_taxonomy_hierarchical($taxonomy) && $existing_term['name'] == $name && $exists = term_exists( (int) $term_id, $taxonomy ) ) { // Hierarchical, and it matches an existing term, Do not allow same "name" in the same level. $siblings = get_terms($taxonomy, array('fields' => 'names', 'get' => 'all', 'parent' => (int)$parent) ); if ( in_array($name, $siblings) ) { return new WP_Error('term_exists', __('A term with the name provided already exists with this parent.'), $exists['term_id']); } else { $slug = wp_unique_term_slug($slug, (object) $args); if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error); $term_id = (int) $wpdb->insert_id; } } elseif ( $existing_term['name'] != $name ) { // We've got an existing term, with a different name, Create the new term. $slug = wp_unique_term_slug($slug, (object) $args); if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error); $term_id = (int) $wpdb->insert_id; } elseif ( $exists = term_exists( (int) $term_id, $taxonomy ) ) { // Same name, same slug. return new WP_Error('term_exists', __('A term with the name provided already exists.'), $exists['term_id']); } } else { // This term does not exist at all in the database, Create it. $slug = wp_unique_term_slug($slug, (object) $args); if ( false === $wpdb->insert( $wpdb->terms, compact( 'name', 'slug', 'term_group' ) ) ) return new WP_Error('db_insert_error', __('Could not insert term into the database'), $wpdb->last_error); $term_id = (int) $wpdb->insert_id; } // Seems unreachable, However, Is used in the case that a term name is provided, which sanitizes to an empty string. if ( empty($slug) ) { $slug = sanitize_title($slug, $term_id); do_action( 'edit_terms', $term_id ); $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); do_action( 'edited_terms', $term_id ); } $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, $term_id ) ); if ( !empty($tt_id) ) return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id); $wpdb->insert( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent') + array( 'count' => 0 ) ); $tt_id = (int) $wpdb->insert_id; do_action("create_term", $term_id, $tt_id, $taxonomy); do_action("create_$taxonomy", $term_id, $tt_id); $term_id = apply_filters('term_id_filter', $term_id, $tt_id); clean_term_cache($term_id, $taxonomy); do_action("created_term", $term_id, $tt_id, $taxonomy); do_action("created_$taxonomy", $term_id, $tt_id); return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id); } /** * Create Term and Taxonomy Relationships. * * Relates an object (post, link etc) to a term and taxonomy type. Creates the * term and taxonomy relationship if it doesn't already exist. Creates a term if * it doesn't exist (using the slug). * * A relationship means that the term is grouped in or belongs to the taxonomy. * A term has no meaning until it is given context by defining which taxonomy it * exists under. * * @package WordPress * @subpackage Taxonomy * @since 2.3.0 * @uses $wpdb * * @param int $object_id The object to relate to. * @param array|int|string $terms The slug or id of the term, 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 bool $append If false will delete difference of terms. * @return array|WP_Error Affected Term IDs */ function wp_set_object_terms($object_id, $terms, $taxonomy, $append = false) { global $wpdb; $object_id = (int) $object_id; if ( ! taxonomy_exists($taxonomy) ) return new WP_Error('invalid_taxonomy', __('Invalid taxonomy')); if ( !is_array($terms) ) $terms = array($terms); if ( ! $append ) $old_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids', 'orderby' => 'none')); else $old_tt_ids = array(); $tt_ids = array(); $term_ids = array(); $new_tt_ids = array(); foreach ( (array) $terms as $term) { if ( !strlen(trim($term)) ) continue; if ( !$term_info = term_exists($term, $taxonomy) ) { // Skip if a non-existent term ID is passed. if ( is_int($term) ) continue; $term_info = wp_insert_term($term, $taxonomy); } if ( is_wp_error($term_info) ) return $term_info; $term_ids[] = $term_info['term_id']; $tt_id = $term_info['term_taxonomy_id']; $tt_ids[] = $tt_id; if ( $wpdb->get_var( $wpdb->prepare( "SELECT term_taxonomy_id FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id = %d", $object_id, $tt_id ) ) ) continue; do_action( 'add_term_relationship', $object_id, $tt_id ); $wpdb->insert( $wpdb->term_relationships, array( 'object_id' => $object_id, 'term_taxonomy_id' => $tt_id ) ); do_action( 'added_term_relationship', $object_id, $tt_id ); $new_tt_ids[] = $tt_id; } if ( $new_tt_ids ) wp_update_term_count( $new_tt_ids, $taxonomy ); if ( ! $append ) { $delete_terms = array_diff($old_tt_ids, $tt_ids); if ( $delete_terms ) { $in_delete_terms = "'" . implode("', '", $delete_terms) . "'"; do_action( 'delete_term_relationships', $object_id, $delete_terms ); $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_delete_terms)", $object_id) ); do_action( 'deleted_term_relationships', $object_id, $delete_terms ); wp_update_term_count($delete_terms, $taxonomy); } } $t = get_taxonomy($taxonomy); if ( ! $append && isset($t->sort) && $t->sort ) { $values = array(); $term_order = 0; $final_tt_ids = wp_get_object_terms($object_id, $taxonomy, array('fields' => 'tt_ids')); foreach ( $tt_ids as $tt_id ) if ( in_array($tt_id, $final_tt_ids) ) $values[] = $wpdb->prepare( "(%d, %d, %d)", $object_id, $tt_id, ++$term_order); if ( $values ) $wpdb->query("INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . join(',', $values) . " ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)"); } do_action('set_object_terms', $object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids); return $tt_ids; } /** * Will make slug unique, if it isn't already. * * 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. * * The way this works is that if the taxonomy that the term belongs to is * hierarchical and has a parent, it will append that parent to the $slug. * * 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. * * @package WordPress * @subpackage Taxonomy * @since 2.3.0 * @uses $wpdb * * @param string $slug The string that will be tried for a unique slug * @param object $term The term object that the $slug will belong too * @return string Will return a true unique slug. */ function wp_unique_term_slug($slug, $term) { global $wpdb; if ( ! term_exists( $slug ) ) return $slug; // If the taxonomy supports hierarchy and the term has a parent, make the slug unique // by incorporating parent slugs. if ( is_taxonomy_hierarchical($term->taxonomy) && !empty($term->parent) ) { $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 $slug; if ( empty($parent_term->parent) ) break; $the_parent = $parent_term->parent; } } // If we didn't get a unique slug, try appending a number to make it unique. if ( !empty($args['term_id']) ) $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s AND term_id != %d", $slug, $args['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; } /** * Update term based on arguments provided. * * The $args will indiscriminately override all values with the same field name. * Care must be taken to not override important information need to update or * update will fail (or perhaps create a new term, neither would be acceptable). * * Defaults will set 'alias_of', 'description', 'parent', and 'slug' if not * defined in $args already. * * 'alias_of' will create a term group, if it doesn't already exist, and update * it for the $term. * * If the 'slug' argument in $args is missing, then the 'name' in $args will be * used. It should also be noted that if you set 'slug' and it isn't unique then * 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 * away from the term keys. * * @package WordPress * @subpackage Taxonomy * @since 2.3.0 * * @uses $wpdb * @uses do_action() Will call both 'edit_term' and 'edit_$taxonomy' twice. * @uses apply_filters() Will call the 'term_id_filter' filter and pass the term * id and taxonomy id. * * @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 * @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')); $term_id = (int) $term_id; // First, get all of the original args $term = get_term ($term_id, $taxonomy, ARRAY_A); if ( is_wp_error( $term ) ) return $term; // Escape data pulled from DB. $term = add_magic_quotes($term); // Merge old and new args with new args overwriting old ones. $args = array_merge($term, $args); $defaults = array( 'alias_of' => '', 'description' => '', 'parent' => 0, 'slug' => ''); $args = wp_parse_args($args, $defaults); $args = sanitize_term($args, $taxonomy, 'db'); extract($args, EXTR_SKIP); // expected_slashed ($name) $name = stripslashes($name); $description = stripslashes($description); if ( '' == trim($name) ) return new WP_Error('empty_term_name', __('A name is required for this term')); $empty_slug = false; if ( empty($slug) ) { $empty_slug = true; $slug = sanitize_title($name); } if ( $alias_of ) { $alias = $wpdb->get_row( $wpdb->prepare( "SELECT term_id, term_group FROM $wpdb->terms WHERE slug = %s", $alias_of) ); if ( $alias->term_group ) { // The alias we want is already in a group, so let's use that one. $term_group = $alias->term_group; } else { // The alias isn't in a group, so let's create a new one and firstly add the alias term to it. $term_group = $wpdb->get_var("SELECT MAX(term_group) FROM $wpdb->terms") + 1; do_action( 'edit_terms', $alias->term_id ); $wpdb->update( $wpdb->terms, compact('term_group'), array( 'term_id' => $alias->term_id ) ); do_action( 'edited_terms', $alias->term_id ); } } // Check $parent to see if it will cause a hierarchy loop $parent = apply_filters( 'wp_update_term_parent', $parent, $term_id, $taxonomy, compact( array_keys( $args ) ), $args ); // Check for duplicate slug $id = $wpdb->get_var( $wpdb->prepare( "SELECT term_id FROM $wpdb->terms WHERE slug = %s", $slug ) ); if ( $id && ($id != $term_id) ) { // If an empty slug was passed or the parent changed, reset the slug to something unique. // Otherwise, bail. if ( $empty_slug || ( $parent != $term['parent']) ) $slug = wp_unique_term_slug($slug, (object) $args); else return new WP_Error('duplicate_term_slug', sprintf(__('The slug “%s” is already in use by another term'), $slug)); } do_action( 'edit_terms', $term_id ); $wpdb->update($wpdb->terms, compact( 'name', 'slug', 'term_group' ), compact( 'term_id' ) ); if ( empty($slug) ) { $slug = sanitize_title($name, $term_id); $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); } do_action( 'edited_terms', $term_id ); $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) ); 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 ) ); do_action( 'edited_term_taxonomy', $tt_id, $taxonomy ); do_action("edit_term", $term_id, $tt_id, $taxonomy); do_action("edit_$taxonomy", $term_id, $tt_id); $term_id = apply_filters('term_id_filter', $term_id, $tt_id); clean_term_cache($term_id, $taxonomy); do_action("edited_term", $term_id, $tt_id, $taxonomy); do_action("edited_$taxonomy", $term_id, $tt_id); return array('term_id' => $term_id, 'term_taxonomy_id' => $tt_id); } /** * Enable or disable term counting. * * @since 2.5.0 * * @param bool $defer Optional. Enable if true, disable if false. * @return bool Whether term counting is enabled or disabled. */ function wp_defer_term_counting($defer=null) { static $_defer = false; if ( is_bool($defer) ) { $_defer = $defer; // flush any deferred counts if ( !$defer ) wp_update_term_count( null, null, true ); } return $_defer; } /** * Updates the amount of terms in taxonomy. * * If there is a taxonomy callback applied, then it will be called for updating * the count. * * The default action is to count what the amount of terms have the relationship * of term ID. Once that is done, then update the database. * * @package WordPress * @subpackage Taxonomy * @since 2.3.0 * @uses $wpdb * * @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 ) { static $_deferred = array(); if ( $do_deferred ) { foreach ( (array) array_keys($_deferred) as $tax ) { wp_update_term_count_now( $_deferred[$tax], $tax ); unset( $_deferred[$tax] ); } } if ( empty($terms) ) return false; if ( !is_array($terms) ) $terms = array($terms); if ( wp_defer_term_counting() ) { if ( !isset($_deferred[$taxonomy]) ) $_deferred[$taxonomy] = array(); $_deferred[$taxonomy] = array_unique( array_merge($_deferred[$taxonomy], $terms) ); return true; } return wp_update_term_count_now( $terms, $taxonomy ); } /** * Perform term count update immediately. * * @since 2.5.0 * * @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. */ function wp_update_term_count_now( $terms, $taxonomy ) { global $wpdb; $terms = array_map('intval', $terms); $taxonomy = get_taxonomy($taxonomy); if ( !empty($taxonomy->update_count_callback) ) { call_user_func($taxonomy->update_count_callback, $terms, $taxonomy); } else { $object_types = (array) $taxonomy->object_type; foreach ( $object_types as &$object_type ) { if ( 0 === strpos( $object_type, 'attachment:' ) ) list( $object_type ) = explode( ':', $object_type ); } if ( $object_types == array_filter( $object_types, 'post_type_exists' ) ) { // Only post types are attached to this taxonomy _update_post_term_count( $terms, $taxonomy ); } else { // Default count updater _update_generic_term_count( $terms, $taxonomy ); } } clean_term_cache($terms, '', false); return true; } // // Cache // /** * 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 * take place. * * @package WordPress * @subpackage Taxonomy * @since 2.3.0 * * @see get_object_taxonomies() for more on $object_type * @uses do_action() Will call action hook named, 'clean_object_term_cache' after completion. * Passes, function params in same order. * * @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) ) $object_ids = array($object_ids); foreach ( $object_ids as $id ) foreach ( get_object_taxonomies($object_type) as $taxonomy ) wp_cache_delete($id, "{$taxonomy}_relationships"); do_action('clean_object_term_cache', $object_ids, $object_type); } /** * Will remove all of the term ids from the cache. * * @package WordPress * @subpackage Taxonomy * @since 2.3.0 * @uses $wpdb * * @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 $clean_taxonomy Whether to clean taxonomy wide caches (true), or just individual term object caches (false). Default is true. */ function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) { global $wpdb; static $cleaned = array(); if ( !is_array($ids) ) $ids = array($ids); $taxonomies = array(); // If no taxonomy, assume tt_ids. if ( empty($taxonomy) ) { $tt_ids = array_map('intval', $ids); $tt_ids = implode(', ', $tt_ids); $terms = $wpdb->get_results("SELECT term_id, taxonomy FROM $wpdb->term_taxonomy WHERE term_taxonomy_id IN ($tt_ids)"); $ids = array(); foreach ( (array) $terms as $term ) { $taxonomies[] = $term->taxonomy; $ids[] = $term->term_id; wp_cache_delete($term->term_id, $term->taxonomy); } $taxonomies = array_unique($taxonomies); } else { $taxonomies = array($taxonomy); foreach ( $taxonomies as $taxonomy ) { foreach ( $ids as $id ) { wp_cache_delete($id, $taxonomy); } } } foreach ( $taxonomies as $taxonomy ) { if ( isset($cleaned[$taxonomy]) ) continue; $cleaned[$taxonomy] = true; if ( $clean_taxonomy ) { wp_cache_delete('all_ids', $taxonomy); wp_cache_delete('get', $taxonomy); delete_option("{$taxonomy}_children"); // Regenerate {$taxonomy}_children _get_term_hierarchy($taxonomy); } do_action('clean_term_cache', $ids, $taxonomy); } wp_cache_set('last_changed', time(), 'terms'); } /** * Retrieves the taxonomy relationship to the term object id. * * @package WordPress * @subpackage Taxonomy * @since 2.3.0 * * @uses wp_cache_get() Retrieves taxonomy relationship from cache * * @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 $id. */ function &get_object_term_cache($id, $taxonomy) { $cache = wp_cache_get($id, "{$taxonomy}_relationships"); return $cache; } /** * Updates the cache for Term ID(s). * * Will only update the cache for terms not already cached. * * 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. * * @package WordPress * @subpackage Taxonomy * @since 2.3.0 * @uses wp_get_object_terms() Used to get terms from the database to update * * @param string|array $object_ids Single or list of term object ID(s) * @param array|string $object_type The taxonomy object type * @return null|bool Null value is given with empty $object_ids. False if */ function update_object_term_cache($object_ids, $object_type) { if ( empty($object_ids) ) return; if ( !is_array($object_ids) ) $object_ids = explode(',', $object_ids); $object_ids = array_map('intval', $object_ids); $taxonomies = get_object_taxonomies($object_type); $ids = array(); foreach ( (array) $object_ids as $id ) { foreach ( $taxonomies as $taxonomy ) { if ( false === wp_cache_get($id, "{$taxonomy}_relationships") ) { $ids[] = $id; break; } } } if ( empty( $ids ) ) return false; $terms = wp_get_object_terms($ids, $taxonomies, array('fields' => 'all_with_object_id')); $object_terms = array(); foreach ( (array) $terms as $term ) $object_terms[$term->object_id][$term->taxonomy][$term->term_id] = $term; foreach ( $ids as $id ) { foreach ( $taxonomies as $taxonomy ) { if ( ! isset($object_terms[$id][$taxonomy]) ) { if ( !isset($object_terms[$id]) ) $object_terms[$id] = array(); $object_terms[$id][$taxonomy] = array(); } } } foreach ( $object_terms as $id => $value ) { foreach ( $value as $taxonomy => $terms ) { wp_cache_add( $id, $terms, "{$taxonomy}_relationships" ); } } } /** * Updates Terms to Taxonomy in cache. * * @package WordPress * @subpackage Taxonomy * @since 2.3.0 * * @param array $terms List of Term objects to change * @param string $taxonomy Optional. Update Term to this taxonomy in cache */ function update_term_cache($terms, $taxonomy = '') { foreach ( (array) $terms as $term ) { $term_taxonomy = $taxonomy; if ( empty($term_taxonomy) ) $term_taxonomy = $term->taxonomy; wp_cache_add($term->term_id, $term, $term_taxonomy); } } // // Private // /** * Retrieves children of taxonomy as Term IDs. * * @package WordPress * @subpackage Taxonomy * @access private * @since 2.3.0 * * @uses update_option() Stores all of the children in "$taxonomy_children" * option. That is the name of the taxonomy, immediately followed by '_children'. * * @param string $taxonomy Taxonomy Name * @return array Empty if $taxonomy isn't hierarchical or returns children as Term IDs. */ function _get_term_hierarchy($taxonomy) { if ( !is_taxonomy_hierarchical($taxonomy) ) return array(); $children = get_option("{$taxonomy}_children"); if ( is_array($children) ) return $children; $children = array(); $terms = get_terms($taxonomy, array('get' => 'all', 'orderby' => 'id', 'fields' => 'id=>parent')); foreach ( $terms as $term_id => $parent ) { if ( $parent > 0 ) $children[$parent][] = $term_id; } update_option("{$taxonomy}_children", $children); return $children; } /** * 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. * * @package WordPress * @subpackage Taxonomy * @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 $term_id. */ function &_get_term_children($term_id, $terms, $taxonomy) { $empty_array = array(); if ( empty($terms) ) return $empty_array; $term_list = array(); $has_children = _get_term_hierarchy($taxonomy); if ( ( 0 != $term_id ) && ! isset($has_children[$term_id]) ) return $empty_array; foreach ( (array) $terms as $term ) { $use_id = false; if ( !is_object($term) ) { $term = get_term($term, $taxonomy); if ( is_wp_error( $term ) ) return $term; $use_id = true; } if ( $term->term_id == $term_id ) continue; if ( $term->parent == $term_id ) { if ( $use_id ) $term_list[] = $term->term_id; else $term_list[] = $term; if ( !isset($has_children[$term->term_id]) ) continue; if ( $children = _get_term_children($term->term_id, $terms, $taxonomy) ) $term_list = array_merge($term_list, $children); } } return $term_list; } /** * Add count of children to parent count. * * Recalculates term counts by including items from child terms. Assumes all * relevant children are already in the $terms argument. * * @package WordPress * @subpackage Taxonomy * @access private * @since 2.3.0 * @uses $wpdb * * @param array $terms List of Term IDs * @param string $taxonomy Term Context * @return null Will break from function if conditions are not met. */ function _pad_term_counts(&$terms, $taxonomy) { global $wpdb; // This function only works for hierarchical taxonomies like post categories. if ( !is_taxonomy_hierarchical( $taxonomy ) ) return; $term_hier = _get_term_hierarchy($taxonomy); if ( empty($term_hier) ) return; $term_items = 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 $tax_obj = get_taxonomy($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'"); foreach ( $results as $row ) { $id = $term_ids[$row->term_taxonomy_id]; $term_items[$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 foreach ( $term_ids as $term_id ) { $child = $term_id; while ( !empty( $terms_by_id[$child] ) && $parent = $terms_by_id[$child]->parent ) { 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; } } // Transfer the touched cells foreach ( (array) $term_items as $id => $items ) if ( isset($terms_by_id[$id]) ) $terms_by_id[$id]->count = count($items); } // // Default callbacks // /** * Will update term count based on object types of the current taxonomy. * * Private function for the default callback for post_tag and category * taxonomies. * * @package WordPress * @subpackage Taxonomy * @access private * @since 2.3.0 * @uses $wpdb * * @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; $object_types = (array) $taxonomy->object_type; foreach ( $object_types as &$object_type ) list( $object_type ) = explode( ':', $object_type ); $object_types = array_unique( $object_types ); if ( false !== ( $check_attachments = array_search( 'attachment', $object_types ) ) ) { unset( $object_types[ $check_attachments ] ); $check_attachments = true; } if ( $object_types ) $object_types = esc_sql( array_filter( $object_types, 'post_type_exists' ) ); foreach ( (array) $terms as $term ) { $count = 0; // 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 ) ); if ( $object_types ) $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 ) ); do_action( 'edit_term_taxonomy', $term, $taxonomy ); $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); do_action( 'edited_term_taxonomy', $term, $taxonomy ); } } /** * Will update term count based on number of objects. * * Default callback for the link_category taxonomy. * * @package WordPress * @subpackage Taxonomy * @since 3.3.0 * @uses $wpdb * * @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; foreach ( (array) $terms as $term ) { $count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $term ) ); do_action( 'edit_term_taxonomy', $term, $taxonomy ); $wpdb->update( $wpdb->term_taxonomy, compact( 'count' ), array( 'term_taxonomy_id' => $term ) ); do_action( 'edited_term_taxonomy', $term, $taxonomy ); } } /** * Generates a permalink for a taxonomy term archive. * * @since 2.5.0 * * @uses apply_filters() Calls 'term_link' with term link and term object, and taxonomy parameters. * @uses apply_filters() For the post_tag Taxonomy, Calls 'tag_link' with tag link and tag ID as parameters. * @uses apply_filters() For the category Taxonomy, Calls 'category_link' filter on category link and category ID. * * @param object|int|string $term * @param string $taxonomy (optional if $term is object) * @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 = '') { global $wp_rewrite; if ( !is_object($term) ) { if ( is_int($term) ) { $term = &get_term($term, $taxonomy); } else { $term = &get_term_by('slug', $term, $taxonomy); } } if ( !is_object($term) ) $term = new WP_Error('invalid_term', __('Empty Term')); if ( is_wp_error( $term ) ) return $term; $taxonomy = $term->taxonomy; $termlink = $wp_rewrite->get_extra_permastruct($taxonomy); $slug = $term->slug; $t = get_taxonomy($taxonomy); if ( empty($termlink) ) { if ( 'category' == $taxonomy ) $termlink = '?cat=' . $term->term_id; elseif ( $t->query_var ) $termlink = "?$t->query_var=$slug"; else $termlink = "?taxonomy=$taxonomy&term=$slug"; $termlink = home_url($termlink); } else { if ( $t->rewrite['hierarchical'] ) { $hierarchical_slugs = array(); $ancestors = get_ancestors($term->term_id, $taxonomy); foreach ( (array)$ancestors as $ancestor ) { $ancestor_term = get_term($ancestor, $taxonomy); $hierarchical_slugs[] = $ancestor_term->slug; } $hierarchical_slugs = array_reverse($hierarchical_slugs); $hierarchical_slugs[] = $slug; $termlink = str_replace("%$taxonomy%", implode('/', $hierarchical_slugs), $termlink); } else { $termlink = str_replace("%$taxonomy%", $slug, $termlink); } $termlink = home_url( user_trailingslashit($termlink, 'category') ); } // Back Compat filters. if ( 'post_tag' == $taxonomy ) $termlink = apply_filters( 'tag_link', $termlink, $term->term_id ); elseif ( 'category' == $taxonomy ) $termlink = apply_filters( 'category_link', $termlink, $term->term_id ); return apply_filters('term_link', $termlink, $term, $taxonomy); } /** * Display the taxonomies of a post with available options. * * This function can be used within the loop to display the taxonomies for a * post without specifying the Post ID. You can also use it outside the Loop to * display the taxonomies for a specific post. * * The available defaults are: * 'post' : default is 0. The post ID to get taxonomies of. * 'before' : default is empty string. Display before taxonomies list. * 'sep' : default is empty string. Separate every taxonomy with value in this. * 'after' : default is empty string. Display this after the taxonomies list. * 'template' : The template to use for displaying the taxonomy terms. * * @since 2.5.0 * @uses get_the_taxonomies() * * @param array $args Override the defaults. */ function the_taxonomies($args = array()) { $defaults = array( 'post' => 0, 'before' => '', 'sep' => ' ', 'after' => '', 'template' => '%s: %l.' ); $r = wp_parse_args( $args, $defaults ); extract( $r, EXTR_SKIP ); echo $before . join($sep, get_the_taxonomies($post, $r)) . $after; } /** * Retrieve all taxonomies associated with a post. * * This function can be used within the loop. It will also return an array of * the taxonomies with links to the taxonomy and name. * * @since 2.5.0 * * @param int $post Optional. Post ID or will use Global Post ID (in loop). * @param array $args Override the defaults. * @return array */ function get_the_taxonomies($post = 0, $args = array() ) { if ( is_int($post) ) $post =& get_post($post); elseif ( !is_object($post) ) $post =& $GLOBALS['post']; $args = wp_parse_args( $args, array( 'template' => '%s: %l.', ) ); extract( $args, EXTR_SKIP ); $taxonomies = array(); if ( !$post ) return $taxonomies; foreach ( get_object_taxonomies($post) as $taxonomy ) { $t = (array) get_taxonomy($taxonomy); if ( empty($t['label']) ) $t['label'] = $taxonomy; if ( empty($t['args']) ) $t['args'] = array(); if ( empty($t['template']) ) $t['template'] = $template; $terms = get_object_term_cache($post->ID, $taxonomy); if ( empty($terms) ) $terms = wp_get_object_terms($post->ID, $taxonomy, $t['args']); $links = array(); foreach ( $terms as $term ) $links[] = "$term->name"; if ( $links ) $taxonomies[$taxonomy] = wp_sprintf($t['template'], $t['label'], $links, $terms); } return $taxonomies; } /** * Retrieve all taxonomies of a post with just the names. * * @since 2.5.0 * @uses get_object_taxonomies() * * @param int $post Optional. Post ID * @return array */ function get_post_taxonomies($post = 0) { $post =& get_post($post); return get_object_taxonomies($post); } /** * Determine if the given object is associated with any of the given terms. * * The given terms are checked against the object's terms' term_ids, names and slugs. * Terms given as integers will only be checked against the object's terms' term_ids. * If no terms are given, determines if object is associated with any terms in the given taxonomy. * * @since 2.7.0 * @uses get_object_term_cache() * @uses wp_get_object_terms() * * @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. */ 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 ( empty( $object_terms ) ) $object_terms = wp_get_object_terms( $object_id, $taxonomy ); if ( is_wp_error( $object_terms ) ) return $object_terms; if ( empty( $object_terms ) ) return false; if ( empty( $terms ) ) return ( !empty( $object_terms ) ); $terms = (array) $terms; if ( $ints = array_filter( $terms, 'is_int' ) ) $strs = array_diff( $terms, $ints ); else $strs =& $terms; foreach ( $object_terms as $object_term ) { if ( $ints && in_array( $object_term->term_id, $ints ) ) return true; // If int, check against term_id if ( $strs ) { if ( in_array( $object_term->term_id, $strs ) ) return true; if ( in_array( $object_term->name, $strs ) ) return true; if ( in_array( $object_term->slug, $strs ) ) return true; } } return false; } /** * Determine if the given object type is associated with the given taxonomy. * * @since 3.0.0 * @uses get_object_taxonomies() * * @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($taxonomies) ) return false; if ( in_array($taxonomy, $taxonomies) ) return true; return false; } /** * Get an array of ancestor IDs for a given object. * * @param int $object_id The ID of the object * @param string $object_type The type of object for which we'll be retrieving ancestors. * @return array of ancestors from lowest to highest in the hierarchy. */ function get_ancestors($object_id = 0, $object_type = '') { $object_id = (int) $object_id; $ancestors = array(); if ( empty( $object_id ) ) { return apply_filters('get_ancestors', $ancestors, $object_id, $object_type); } if ( is_taxonomy_hierarchical( $object_type ) ) { $term = get_term($object_id, $object_type); while ( ! is_wp_error($term) && ! empty( $term->parent ) && ! in_array( $term->parent, $ancestors ) ) { $ancestors[] = (int) $term->parent; $term = get_term($term->parent, $object_type); } } elseif ( null !== get_post_type_object( $object_type ) ) { $object = get_post($object_id); if ( ! is_wp_error( $object ) && isset( $object->ancestors ) && is_array( $object->ancestors ) ) $ancestors = $object->ancestors; else { while ( ! is_wp_error($object) && ! empty( $object->post_parent ) && ! in_array( $object->post_parent, $ancestors ) ) { $ancestors[] = (int) $object->post_parent; $object = get_post($object->post_parent); } } } return apply_filters('get_ancestors', $ancestors, $object_id, $object_type); } /** * 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 */ function wp_get_term_taxonomy_parent_id( $term_id, $taxonomy ) { $term = get_term( $term_id, $taxonomy ); if ( !$term || is_wp_error( $term ) ) return false; return (int) $term->parent; } /** * 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. * * @since 3.1.0 * @uses wp_find_hierarchy_loop() * * @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. */ function wp_check_term_hierarchy_for_loops( $parent, $term_id, $taxonomy ) { // Nothing fancy here - bail if ( !$parent ) return 0; // Can't be its own parent if ( $parent == $term_id ) return 0; // Now look for larger loops if ( !$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 if ( isset( $loop[$term_id] ) ) return 0; // There's a loop, but it doesn't contain $term_id. Break the loop. foreach ( array_keys( $loop ) as $loop_member ) wp_update_term( $loop_member, $taxonomy, array( 'parent' => 0 ) ); return $parent; }
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