public function actionIndex()
 {
     $model = new UserForm(['scenario' => 'login']);
     $token = Yii::$app->request->cookies['access'];
     if (Yii::$app->user->isGuest) {
         if ($token != null) {
             if (UserIdentity::validateToken($token)) {
                 Yii::$app->user->login(UserIdentity::findIdentityByAccessToken($token));
             } else {
                 UserIdentity::logout();
             }
         }
     }
     if ($model->load(Yii::$app->request->post()) && $model->validate() && UserIdentity::login($model->login)) {
         $model->getByLogin($model->login);
         if ($model->rememberMe) {
             UserIdentity::regenerateToken($model->id, $model->login, $model->password);
         }
         $schools = School::getByUserId($model->id);
         if (count($schools) == 0) {
             return $this->redirect(['personalarea/index']);
         } else {
             if (count($schools) == 1) {
                 return $this->redirect(['school/index', 'userId' => $model->id, 'schId' => $schools[0]->sid]);
             } else {
                 if (count($schools) > 1) {
                     return $this->redirect(['selectschool']);
                 }
             }
         }
         return $this->render('index', ['model' => $model]);
     } elseif (!$model->load(Yii::$app->request->post())) {
         if (Yii::$app->user->identity != null) {
             $model->login = Yii::$app->user->identity->login;
             $model->password = Yii::$app->user->identity->password;
         } else {
             if ($token != null) {
                 $token = Yii::$app->crypto->decryptToken($token);
                 $model->login = $token['login'];
                 $model->password = $token['password'];
             }
         }
     }
     $this->layout = 'main';
     return $this->render('index', ['model' => $model]);
 }