/**
  * Creates a new Date model.
  * If creation is successful, the browser will be redirected to the 'view' page.
  * @return mixed
  */
 public function actionCreate()
 {
     $model = new Date();
     if ($model->load(Yii::$app->request->post())) {
         if ($model->start_date < $model->end_date) {
             $realDate = $model->start_date;
             do {
                 $date = Date::find()->where(['=', 'date', $realDate])->one();
                 if (!$date) {
                     $date = new Date();
                     $date->date = $realDate;
                     $date->save();
                 }
                 $realDate = date('Y-m-d', strtotime($realDate . ' +1 day'));
             } while ($realDate <= $model->end_date);
         } else {
             $model->addError('end_date', 'End Date Must bigger than Start Date');
         }
     }
     return $this->redirect(['index']);
 }