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