Automatically select ancestor terms for all selected terms

  • Here is a function to automatically select the ancestor terms for the selected terms when a post is saved.

    Note that this will apply to all post types, and all taxonomies associated with the post type.

    add_action('save_post', 'jr_select_ancestor_terms', 12, 2); // automatically select ancestor terms
function jr_select_ancestor_terms($post_id, $post) {
	if( $post->post_type == 'revision' ) return; // Don't store data twice
	foreach ($_POST['tax_input'] as $taxname => $termids) {
		foreach ($termids as $termid) {
			$parenttags = get_ancestors($termid,$taxname);
			wp_set_object_terms( $post->ID, $parenttags, $taxname, true );
		}
	}
}

    I would appreciate feedback & improvements.

Viewing 1 replies (of 1 total)
  • Thread Starter skeg64

    (@skeg64)

    This revision provides better compatibility with plugins (doesn’t rely on POST data), and only updates custom taxonomies, not built-in ones.

    add_action('save_post', 'jr_select_parent_terms', 10, 2); // automatically select parent terms
function jr_select_parent_terms($post_id, $post) {
	if( $post->post_type == 'revision' ) return;
	$taxonomies = get_taxonomies(array('_builtin' => false));
	foreach ($taxonomies as $taxonomy ) {
		$terms = wp_get_object_terms($post->ID, $taxonomy);
			foreach ($terms as $term) {
				$parenttags = get_ancestors($term->term_id,$taxonomy);
				wp_set_object_terms( $post->ID, $parenttags, $taxonomy, true );
		}
	}
}
Viewing 1 replies (of 1 total)
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