function register_blessing_post_type() {
    register_post_type('blessings', array(
        'labels' => array(
            'name' => 'คำถวายพระพร',
            'singular_name' => 'คำถวายพระพร',
        ),
        'public' => true,
        'has_archive' => true,
        'supports' => array('title', 'editor'),
        'show_in_rest' => true
    ));
}
add_action('init', 'register_blessing_post_type');