Profile: Arrien

function md_checkout_title( $post_id ) {
  if( 'material-check-out' == get_post_type($post_id) ) {
    remove_action( 'save_post', 'md_checkout_title' );
    $date = date( 'Y-m-d H:i:s', time() );
    $author_id = get_post_field( 'post_author', $post_id );
    $first_name = get_the_author_meta( 'first_name', $author_id );
    $updated_data = array(
      'ID' => $post_id,
      'post_title' => $first_name . $date
    );
    wp_update_post( $updated_data );
    add_action( 'save_post', 'md_checkout_title' );
  } else {
    return;
  }
}
add_action( 'save_post', 'md_checkout_title' );