[Resolved] save_post and custom field

[Author]

Posts

[andreaV-4]

Hi,
I would like to update the title of my post (with some data taken from custom fields) after insertion and with each update. Using save_post the whole thing works with updates but on the first insert the custom fields always come up empty even though they are valorized (if I then do an update without any changes it works). How can I do this?

Regards

[Luo Yang]

Hello,

Please follow WP document to setup your custom PHP codes:
https://developer.wordpress.org/reference/hooks/save_post/

And I suggest you use a higher value for the "Priority" parameter, so it can be triggered after all other fields are saved into database, for example:
add_action( 'save_post', 'MY-CUSTOM-FUNCTION', 999 );

More help:
https://developer.wordpress.org/plugins/hooks/actions/#priority

[andreaV-4]

Hi Luo Yang,
thank you. Even setting as priority 999 the custom fields are not displayed.
To get the custom field I run this command

$date = types_render_field( 'date' , array( 'post_id' => $post_id ));

In the update it works but in the first save it does not.

Regards

[Luo Yang]

I have tried it in a fresh WP installation + the latest version of Toolset plugins, it works fine after you publish the post and refresh the browser, see below test site:
1) Login URL:
hidden link

2) Custom codes:
hidden link
Line 70~81:

add_action('save_post', 'my_function', 999, 3);

function my_function($post_ID, $post, $update){
  remove_action('save_post', 'my_function', 999);
  $date = types_render_field( 'date' , array( 'post_id' => $post_ID ));
  $my_post = array(
      'ID'           => $post_ID,
      'post_title'   => 'Post title - ' . $date,
  );
  wp_update_post( $my_post );
  add_action( 'save_post', 'my_function', 999, 3 );
}

3) Create a post, setup the date field value, publish and refresh your browser, I can see it works fine.

[andreaV-4]

My issue is resolved now. Thank you!