/**
  * Creates a new model.
  * If creation is successful, the browser will be redirected to the 'view' page.
  */
 public function actionCreate()
 {
     $model = new Activity();
     // Uncomment the following line if AJAX validation is needed
     // $this->performAjaxValidation($model);
     if (isset($_POST['Activity'])) {
         $model->attributes = $_POST['Activity'];
         if ($model->save()) {
             $this->redirect(array('view', 'id' => $model->activity_id));
         }
     }
     if (isset($_POST['ActivityForm']) || isset($_GET['activity_id'])) {
         if (!Yii::app()->user->isGuest) {
             if (isset($_POST['ActivityForm']) && $_POST['ActivityForm']['activity_id'] == 0) {
                 $model->attributes = $_POST['ActivityForm'];
                 $model->author_id = Yii::app()->user->getId();
                 $model->save();
                 $activity_id = $model->activity_id;
             } elseif (isset($_GET['activity_id'])) {
                 $activity_id = $_GET['activity_id'];
             } else {
                 $activity_id = $_POST['ActivityForm']['activity_id'];
             }
             $link = new ActivityUser();
             $link->activity_id = $activity_id;
             $link->user_id = Yii::app()->user->getId();
             if (!$link->save()) {
                 CVarDumper::dump($link->getErrors(), 10, true);
                 exit;
             }
         }
         //			if ($model->save())
         $this->redirect(array('site/index'));
     }
     $this->render('create', array('model' => $model));
 }