The problem is a basic PHP issue, you told WordPress to call a function named get_data_from_form when the wp_ajax_get_data_from_form action happens] add_action(‘wp_ajax_get_data_from_form’, ‘get_data_from_form’ ); But no function with that name exists. Sure you have a class with a function inside it that exists, but that’s not the same. Think of it this way, if there … Read more
The usual way to add an action hook is more like this: // … some other code do_action( ‘my_action’, $post_id ); // …elsewhere add_action( ‘my_action’, ‘wpse405965_function’ ); /** * Function hooked to my_action * * @param int $post_id The post ID. */ function wpse405965_function( $post_id ) { if ( 2 !== $post_id ) { echo … Read more
Ideally access controls would be implemented via WordPress’s Roles and Capabilities system. But in highly-granular cases such as limiting access to a single post to a few users, the map_meta_cap filter can be used to shim in additional restrictions. In this case, when WordPress is testing an edit_post capability for a user/post combination, we can … Read more
Display custom product option in admin order details
Change image data durgin upload
Sharing variables in both actions wp_footer and wp_ajax
Elementor posts custom query based on tag [closed]
When post data is inserted into database it is passed through wp_insert_post_data filter in wp_insert_post() function (source). According to documentation you can check for set ID argument to distinguish posts being updated from posts being created.
It is executed only once. You see it multiple times because contents of those widgets are fetched via AJAX which loads WordPress in the ajax request again and hence it is echo’ed once again but it is executed only once per load. Makes sense?
If you’re talking about on post pages in admin, couldn’t you just grab id from url? $post_id = $_REQUEST[‘post’];