RW_Meta_Box::object_hooks PHP Метод

    protected function object_hooks()
    {
        // Add meta box
        add_action('add_meta_boxes', array($this, 'add_meta_boxes'));
        // Hide meta box if it's set 'default_hidden'
        add_filter('default_hidden_meta_boxes', array($this, 'hide'), 10, 2);
        // Save post meta
        foreach ($this->meta_box['post_types'] as $post_type) {
            if ('attachment' === $post_type) {
                // Attachment uses other hooks
                // @see wp_update_post(), wp_insert_attachment()
                add_action('edit_attachment', array($this, 'save_post'));
                add_action('add_attachment', array($this, 'save_post'));
            } else {
                add_action("save_post_{$post_type}", array($this, 'save_post'));
            }
        }
    }