What is this, and where do I put this custom code?
add_filter('asp_query_args', 'asp_add_current_parent_dependency', 10, 1);function asp_add_current_parent_dependency($args) {if ( !empty($args['_page_id']) ) {$args['post_parent'][] = $args['_page_id'];$args['post_parent'] = array_unique($args['post_parent']);}return $args;}
..same code, but to apply only for specific search instances:
add_filter('asp_query_args', 'asp_add_current_parent_dependency', 10, 2);function asp_add_current_parent_dependency( $args, $id ) {/*** Search instance IDs you want this code to apply on.*/$search_ids = array(1, 2);// -- !! Do not change anything below this line !! --// --------------------------------------------------if ( !empty($args['_page_id']) && in_array($id, $search_ids) ) {$args['post_parent'][] = $args['_page_id'];$args['post_parent'] = array_unique($args['post_parent']);}return $args;}