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I want to make the slug for each of my custom post types to be the post ID number. How do I do this? None of my posts accept post title, content, or anything else - they require different data which was easier to display as a meta box). To illustrate:

I have a CPT ('eduation'). When I submit the post into the database, it has an ID of, say, 15. When I visit mysite.com/edu/15 ('edu' being the post slug that I have set), I see the details from this post in my site.

I know I could simply change the permalinks, but I want those to stay as they are; I just want to change the ones for these custom post types. Sorry if the question is confusing. It probably is really simple to answer, but I really don't know what the answer is.

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Here's a way how to change the slug:

add_action('wp_insert_post', 'change_slug');
function change_slug( $post_id ) {

       // Making sure this runs only when a 'eduation' post type is created
       $slug = 'eduation';
       if ( $slug != $_POST['post_type'] ) {
          return;
       }


       wp_update_post( array(
        'ID' => $post_id,
        'post_name' => $post_id // slug
       ));

}
|improve this answer|||||
  • Thanks for that. Would I be right to assume that $post_type works for checking if it is the right post type? – Nate Sep 7 '14 at 0:59
  • Never mind, it's 2am in the UK, and I'm starting to get a little tired. I didn't notice that you check for the post type in the if statement. Thanks for this. I'll give it a whirl and let you know what happens. – Nate Sep 7 '14 at 1:00
  • That works perfectly. Although all of my posts are now named "Auto Draft". Given the time, I shall look tomorrow for how to fix that. I didn't think of that at all, but I guess it would be easy to edit. I'm sure I've done that before, based on the meta data, so I shall check one of my past projects. – Nate Sep 7 '14 at 1:06
  • @Nate regarding the "Auto Draft" title: you already set up the "ID" and "slug" of the post, in the` wp_update_post` function from @Erevald but not the post itile. You should be able to set a new title the same way here with 'post_title' => $my_new_title_here,. – LWS-Mo Sep 1 '17 at 11:06

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