I have a Custom Post Type with the slug of "sightings".

I do not need a post title, so I have removed the functionality - but now the posts are being saved as (no-title).

I read about the save_post functionality that can change the post title to something upon save? I hope thats correct.

Can someone help me write some code to achieve this? I have googled it, yes and also tried a couple of Stack Exchange snippets, but they dont seem to do anything.



1 Answer 1


A very easy way to accomplish this would be to add something like this into your themes functions.php file:

function update_post(int $id, \WP_Post $post, bool $update) 
  // Case the post object to an array
  $data = (array) $post;
  // Set the title to the ID of the post
  $data['post_title'] = $id;
  // We need to remove the action to prevent an infinite loop
  remove_action('save_post', 'update_post');
  // Finally re-add the action hook
  add_action('save_post', 'update_post', 10, 3);
add_action('save_post', 'update_post', 10, 3);

Notice that you can narrow down which post types to handle by using add_action('save_post_{$post->post_type}', 'update_post', 10, 3);. So if you custom post type is called video then you would add the hook like this:

add_action('save_post_video', 'update_post', 10, 3);

Read more in the documentation:

  • Thanks, ill give this a go!! :) Feb 10, 2023 at 15:02
  • I cant seem to get this working, the page just times out when clicking Publish or Update. My Custom Post Type is called "sightings". Can you help? I have tried add_action('save_post_sightings', 'update_post', 10, 3); Feb 15, 2023 at 14:51

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