File Content: primary-term-helper.php <?php namespace Yoast\WP\SEO\Helpers; use stdClass; /** * A helper object for primary terms. */ class Primary_Term_Helper { /** * Generate the primary term taxonomies. * * @param int $post_id ID of the post. * * @return array The taxonomies. */ public function get_primary_term_taxonomies( $post_id ) { $post_type = \get_post_type( $post_id ); $all_taxonomies = \get_object_taxonomies( $post_type, 'objects' ); $all_taxonomies = \array_filter( $all_taxonomies, [ $this, 'filter_hierarchical_taxonomies' ] ); /** * Filters which taxonomies for which the user can choose the primary term. * * @api array $taxonomies An array of taxonomy objects that are primary_term enabled. * * @param string $post_type The post type for which to filter the taxonomies. * @param array $all_taxonomies All taxonomies for this post types, even ones that don't have primary term * enabled. */ $taxonomies = (array) \apply_filters( 'wpseo_primary_term_taxonomies', $all_taxonomies, $post_type, $all_taxonomies ); return $taxonomies; } /** * Returns whether or not a taxonomy is hierarchical. * * @param stdClass $taxonomy Taxonomy object. * * @return bool True for hierarchical taxonomy. */ protected function filter_hierarchical_taxonomies( $taxonomy ) { return (bool) $taxonomy->hierarchical; } } Submit