function addWaitEntry($user_id, $comments)
 {
     $new_given = new resWait();
     $new_given->res_id = $this->id;
     $new_given->user_id = $user_id;
     if (!$new_given->find()) {
         $insert = true;
     } else {
         $insert = false;
     }
     $new_given->comments = $comments;
     if ($insert == true) {
         $new_given->insert();
     }
 }