CPT child of Page selected using ACF

• Algo

• September 19, 2018 at 11:56 pm

Hi,

I’m trying to change the permalink of my CPT ‘book-name’ by making it the child of a default page ‘genre-name’. I’m using ‘Post Object’ from ACF to select the page that will become the parent of the CPT.

So in the CPT I will have a selector for the parent page – ‘genre-name’.

The problem is that ACF is returning a wp_post object. How can I work with this in order to make the change on the permalink and to make it the parent of my CPT?

I followed a tutorial that was using meta boxes, but I’m lost now….

Tried a lot of things, this is what I have now:

function rewrite_url_for_books() {
  add_rewrite_tag('%book%', '([^/]+)', 'book=');
  add_permastruct('book', '/%genre%/%book%', false);
  add_rewrite_rule('^([^/]+/([^/]+/?', 'index.php?book=$matches[2]', 'top');
}

add_action( 'init', 'rewrite_url_for_book' );

function permalink_for_book($permalink, $post, $leavename) {
  $post_id = $post->ID;
  if($post->post_type != 'book' || empty($permalink) || in_array($post->post_status, array('draft', 'pending', 'auto-draft')))
    return $permalink;

  $genre = get_field('genre_field');
  setup_postdata($genre);

  $parent = $post->post_parent;
  $parent_post = get_post($parent);

  $permalink = str_replace('%genre%', $parent_post->post_name, $permalink);

  return $permalink;
}

add_filter('post_type_link', 'permalink_for_book', 10, 3);

Thank you!