I've created a custom post type with a rewrite to use the grandparent relationship as the URL like so:
function cpt_child(){ $args = array( //code 'rewrite' => array( 'slug' => '%grandparent%/%parent%', 'with_front' => false), ); register_post_type( 'child', $args );}add_action( 'init', 'cpt_child' ); Then I update the permalink:
add_filter( 'post_type_link', 'filter_the_post_type_link', 1, 2 );function filter_the_post_type_link( $post_link, $post ) { switch( $post->post_type ) { case 'child': $post_link = get_bloginfo( 'url' ); $relationship_child = p2p_type('children_to_parents')->get_adjacent_items($post->ID); $parent = $relationship['parent']->post_name; $relationship_parent = p2p_type('parents_to_grandparents')->get_adjacent_items($parent['parent']->ID); $grandparent = $relationship_parent['parent']->post_name; $post_link .= "/{$grandparent}/"; $post_link .= "{$parent}/"; $post_link .= "{$post->post_name}"; break; } return $post_link;} This all works great, but unfortunately the rewrite rule matches regular pages as well which makes them 404.
I can prevent this by adding a custom slug, for example 'relationship':
But I'd really like to use and have it not break regular pages.
I might have to resort to using non native Wordpress rewrites using htaccess. Thanks in advance!