You could for example save an error flag to a transient in save_post, if a required field is empty, and the display the admin notice based on the transient. This concept is demonstrated in in this old answer. Another option is to add a simple script to the editing view which would alert the user … Read more
The problematic line is the one for the transition_post_status action’s callback as the input parameter is post status (string) but not post ID (integer): https://developer.wordpress.org/reference/hooks/transition_post_status/
WordPress presents default category as a setting in Settings -> Writing (though this doesn’t seem to pre-check the checkbox): The new_to_auto-draft action will allow you to do things to a new post before the page loads, and does pre-check the checkbox (tested): add_action( ‘new_to_auto-draft’, static function ( $post ) { $default_category_id = 25; // The … Read more
The usual way to create a user goes with the register_new_user function. This function offers no filter for the user name. It just checks for uniqueness with username_exists. To actually create the user register_new_user then calls wp_create_user, which in turn calls wp_insert_user. The latter function contains the pre_user_login filter. Then it calls username_exists again, because … Read more
dashboard_glance_items is a filter hook, not an action hook. See here for an explanation of the difference. Your at_glance() function doesn’t include the existing values, so only the items you return will be present in the At A Glance widget items. Something more like this: function at_glance( $items ) { $number_users = count_users(); $text = … Read more
You can use did_action to test for this, e.g.: if ( did_action( ‘init’ ) < 1 ) { // init has not ran yet! Throw the exception } https://developer.wordpress.org/reference/functions/did_action/ did_action returns the number of times that action has been run. This can also be used to ensure it only happens once for filters that happen … Read more
Why does before_delete_post run when opening a post in the backend?
How to filter the URL of thumbnail size in the Media Grid and admin pages
If I understand correctly, you want to do this: add_action(‘upgrader_process_complete’, ‘my_clear_elementor_cache’); function my_clear_elementor_cache() { // Make sure that Elementor loaded and the hook fired if (did_action(‘elementor/loaded’)) { // Automatically purge and regenerate the Elementor CSS cache \Elementor\Plugin::instance()->files_manager->clear_cache(); } }
I ended up using the updated_option hook and checking if a widget or sidebar has been updated. When a widget is added, removed or saved, the update_option hook is fired. All widget option names start with “widget_“. By checking if the option name starts with “widget_” we can determine if a widget was added, removed … Read more