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