public function actionLike($type, $id)
 {
     if (Yii::app()->user->isGuest) {
         Yii::app()->user->loginRequired();
     } else {
         if ($type == 'question') {
             $info = Question::model()->findByPk($id);
             $like = new LikeQue();
             $like->questionId = $id;
         } else {
             if ($type == 'answer') {
                 $info = Answer::model()->findByPk($id);
                 $like = new LikeAns();
                 $like->answerId = $id;
             }
         }
         $info->likeCount++;
         $info->save();
         $like->userId = Yii::app()->user->id;
         $like->time = date("Y-m-d H:i:s");
         $like->save();
     }
 }