If the post content, title and excerpt are empty WordPress will prevent the insertion of the post. You can trick WordPress by first filtering the input array so empty values are set to something else, and then later resetting these values back to empty strings. This will bypass the standard check. add_filter(‘pre_post_title’, ‘wpse28021_mask_empty’); add_filter(‘pre_post_content’, ‘wpse28021_mask_empty’); … Read more
This menu is added in WP_Admin_Bar::add_menus() with an action: add_action( ‘admin_bar_menu’, ‘wp_admin_bar_wp_menu’, 10 ); To remove it take the same action – just one step later. The following code works as a mu plugin or as a regular plugin: <?php # -*- coding: utf-8 -*- /** * Plugin Name: Remove WP Menu From Tool Bar … Read more
It’s not possible to call a private method through an action or filter. When calling add_action or add_filter, WordPress adds the callback to a list of callbacks for that specific action or filter. Then, when do_action or apply_filters is called, WordPress uses call_user_func_array to call the linked functions and methods. As call_user_func_array is not called … Read more
Read the codex, that’s where i finally found the answer : https://codex.wordpress.org/Plugin_API/Action_Reference/publish_post in the end : Custom Post Types To trigger this action for a custom post type, use publish_{$custom_post_type}. e.g. if your post type is ‘book’ use: add_action( ‘publish_book’, ‘post_published_notification’, 10, 2 );
You can exclude menus by testing the post id : add_filter( ‘the_title’, ‘add_cpt_prefix’ ); function add_cpt_prefix( $title ) { global $id, $post; if ( $id && $post && $post->post_type == ‘press’ ) { $title=”<span>Press:</span> ” . $title; } return $title; }
The “save_post” action is only called when we actually changed something in the post page form. If we just press the update button, without changing anything, the “save_post” action is not called. This is important if we are editing a custom post type where we had custom meta boxes. If we rely on the “save_post” … Read more
Try the following in your child theme functions file. add_action( ‘init’, ‘remove_mc_projects’ ); function remove_mc_projects() { remove_action(‘init’, ‘mc_projects’); }
It depends on what exact action you are using, and what the purpose of that action is. For the update actions, for example, there should always be hooks that are triggered before doing the change (so that you may change or prevent it), and hooks that are triggered after the change has been completed (so … Read more
Depends on whether or not you need to check against WordPress’ user authentication. If you need to know whether they’re a logged in user, hook onto ‘init’. Otherwise, the sooner the better. If it’s something that should fire on every page load, and only checks for existence of the cookie and doesn’t need to tap … Read more
register_post_type() has a registration option called ‘register_meta_box_cb’. Set that to a valid callback and it will call that function only when it is compiling the meta boxes for that post type’s edit screen. Something like this: register_post_type( ‘foo’, array( ‘public’ => true, ‘label’ => ‘foo’, ‘register_meta_box_cb’ => ‘bar’, )); function bar(){ add_meta_box(‘blah’, ‘blah’, /* etc … Read more