public function getUbicacionTexto()
 {
     $ubicacion = Ubicacion::findOne($this->ubicacion_id);
     if (!isset($ubicacion)) {
         return "";
     }
     return $ubicacion->nombre;
 }
 /**
  * Finds the Ubicacion model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $id
  * @return Ubicacion the loaded model
  * @throws NotFoundHttpException if the model cannot be found
  */
 protected function findModel($id)
 {
     if (($model = Ubicacion::findOne($id)) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }