I want to be able to edit the post_parent of a custom post type. Basically in my use case I want to mimic how WordPress uses attachments: have a custom post type that is sort of a subtype to post or any other post type. WordPress uses the post_parent field on the wp_posts table to link attachments to their parent posts so I want to be able to do the same. I've tried to use wp_update_posts but it seems to time out the connection when I try to call it during a post save. Is there a way of editing the post_parent directly?

  • Show us the code. – scribu Feb 10 '11 at 16:30

Hi @Manny Fleurmond:

You can add the following HTML to a post metabox you'll have an edit field that lets you edit the raw post_parent ID. Maybe with this knowledge you can build what you need?

<input type="text" id="parent_id" name="parent_id" 
       value="<?php echo $post->post_parent; ?>" />
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  • Thank you. That is pretty cool. Didn't realize you could do this. – Manny Fleurmond Feb 10 '11 at 16:54
  • @Manny Fleurmond - Sure, glad I could help. It took me a while to figure it out, especially the use of parent_id instead of post_parent. – MikeSchinkel Feb 10 '11 at 16:57
  • Nice solution, much less intrusive than the direct database intervention mentioned at wordpress.org/support/topic/…. Thank you! – EFC Jan 18 '13 at 18:56

If I well understood the question you can set support for page-attributes when you register a CPT like this:

add_action( 'init', 'register_products_post_type' );
function register_products_post_type() {
    $labels = array(
        'name' => 'Products'

    $args = array(
        'labels'        => $labels,
        'public'        => true,
        'rewrite'       => array(
            'with_front'    => false
        'has_archive'   => true,
        'hierarchical'  => true,
        'menu_position' => 5,
        'supports'      => array( ..., 'page-attributes', ... )

    register_post_type( 'products', $args );

A listbox will appear in the manage post page.

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