public function actionCreate()
 {
     $model = new RoleGroups();
     if (isset($_POST['RoleGroups'])) {
         $model->attributes = $_POST['RoleGroups'];
         $model->role = implode("||", $_POST['actions']);
         if ($model->save()) {
             if (Yii::app()->request->isAjaxRequest) {
                 $this->renderPartial('view', array('model' => $this->loadModel($model->id)), false, true);
                 Yii::app()->end();
             }
             $this->redirect(array('view', 'id' => $model->id));
         }
     }
     if (Yii::app()->request->isAjaxRequest) {
         $this->renderPartial('create', array('model' => $model), false, true);
         Yii::app()->end();
     }
     $this->render('create', array('model' => $model));
 }