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