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wp_set_object_terms ›

Seit2.3.0
Veraltetn/v
wp_set_object_terms ( $object_id, $terms, $taxonomy, $append = false )
Parameter: (4)
  • (int) $object_id The object to relate to.
    Erforderlich: Ja
  • (string|int|array) $terms A single term slug, single term id, or array of either term slugs or ids. Will replace all existing related terms in this taxonomy. Passing an empty value will remove all related terms.
    Erforderlich: Ja
  • (string) $taxonomy The context in which to relate the term to the object.
    Erforderlich: Ja
  • (bool) $append Optional. If false will delete difference of terms. Default false.
    Erforderlich: Nein
    Standard: false
Gibt zurück:
  • (array|WP_Error) Term taxonomy IDs of the affected terms.
Definiert in:
Codex:

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.



Quellcode

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;

		/**
		 * Fires immediately before an object-term relationship is added.
		 *
		 * @since 2.9.0
		 * @since 4.7.0 Added the `$taxonomy` parameter.
		 *
		 * @param int    $object_id Object ID.
		 * @param int    $tt_id     Term taxonomy ID.
		 * @param string $taxonomy  Taxonomy slug.
		 */
		do_action( 'add_term_relationship', $object_id, $tt_id, $taxonomy );
		$wpdb->insert( $wpdb->term_relationships, array( 'object_id' => $object_id, 'term_taxonomy_id' => $tt_id ) );

		/**
		 * Fires immediately after an object-term relationship is added.
		 *
		 * @since 2.9.0
		 * @since 4.7.0 Added the `$taxonomy` parameter.
		 *
		 * @param int    $object_id Object ID.
		 * @param int    $tt_id     Term taxonomy ID.
		 * @param string $taxonomy  Taxonomy slug.
		 */
		do_action( 'added_term_relationship', $object_id, $tt_id, $taxonomy );
		$new_tt_ids[] = $tt_id;
	}

	if ( $new_tt_ids )
		wp_update_term_count( $new_tt_ids, $taxonomy );

	if ( ! $append ) {
		$delete_tt_ids = array_diff( $old_tt_ids, $tt_ids );

		if ( $delete_tt_ids ) {
			$in_delete_tt_ids = "'" . implode( "', '", $delete_tt_ids ) . "'";
			$delete_term_ids = $wpdb->get_col( $wpdb->prepare( "SELECT tt.term_id FROM $wpdb->term_taxonomy AS tt WHERE tt.taxonomy = %s AND tt.term_taxonomy_id IN ($in_delete_tt_ids)", $taxonomy ) );
			$delete_term_ids = array_map( 'intval', $delete_term_ids );

			$remove = wp_remove_object_terms( $object_id, $delete_term_ids, $taxonomy );
			if ( is_wp_error( $remove ) ) {
				return $remove;
			}
		}
	}

	$t = get_taxonomy($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 )
			if ( false === $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)" ) )
				return new WP_Error( 'db_insert_error', __( 'Could not insert term relationship into the database.' ), $wpdb->last_error );
	}

	wp_cache_delete( $object_id, $taxonomy . '_relationships' );
	wp_cache_delete( 'last_changed', 'terms' );

	/**
	 * Fires after an object's terms have been set.
	 *
	 * @since 2.8.0
	 *
	 * @param int    $object_id  Object ID.
	 * @param array  $terms      An array of object terms.
	 * @param array  $tt_ids     An array of term taxonomy IDs.
	 * @param string $taxonomy   Taxonomy slug.
	 * @param bool   $append     Whether to append new terms to the old terms.
	 * @param array  $old_tt_ids Old array of term taxonomy IDs.
	 */
	do_action( 'set_object_terms', $object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids );
	return $tt_ids;
}