public function actionCreate($id)
 {
     $forum = Forum::model()->findByPk($id);
     if (null == $forum) {
         throw new CHttpException(404, 'Forum not found.');
     }
     if ($forum->is_locked && (Yii::app()->user->isGuest || !Yii::app()->user->isForumAdmin())) {
         throw new CHttpException(403, 'Forum is locked.');
     }
     $model = new PostForm();
     $model->setScenario('create');
     // This makes subject required
     if (isset($_POST['PostForm'])) {
         if (!isset($_POST['YII_CSRF_TOKEN']) || $_POST['YII_CSRF_TOKEN'] != Yii::app()->getRequest()->getCsrfToken()) {
             throw new CHttpException(400, 'Invalid request. Please do not repeat this request again.');
         }
         $model->attributes = $_POST['PostForm'];
         if ($model->validate()) {
             $thread = new Thread();
             $thread->forum_id = $forum->id;
             $thread->subject = $model->subject;
             $thread->author_id = Yii::app()->user->id;
             $thread->lastPost_user_id = Yii::app()->user->id;
             $thread->lastPost_time = time();
             $thread->save(false);
             $post = new Post();
             $post->author_id = Yii::app()->user->id;
             $post->thread_id = $thread->id;
             $post->content = $model->content;
             $post->save(false);
             $this->redirect($thread->url);
         }
     }
     $this->render('newThread', array('forum' => $forum, 'model' => $model));
 }