public function validateDoubleRoom($attribute, $params)
 {
     $validatequery = Trroomschedule::findOne(['date' => $this->date, 'RoomID' => $this->RoomID]);
     if ($validatequery) {
         $this->addError($attribute, 'This Room is already booked');
     }
 }
 /**
  * Finds the Trroomschedule model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $id
  * @return Trroomschedule the loaded model
  * @throws NotFoundHttpException if the model cannot be found
  */
 protected function findModel($id)
 {
     if (($model = Trroomschedule::findOne($id)) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }