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<?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;
}
}
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