public function deleteAction()
 {
     $this->_helper->viewRenderer->setNoRender();
     $this->_helper->getHelper('layout')->disableLayout();
     $topicGroupId = $this->_getParam("id");
     $message = "";
     if ($topicGroupId) {
         //Check belong this user
         $topicGroupTbl = new VC_DbTable_Store_TopicGroup();
         $getTopic = $topicGroupTbl->fetchRow("id = " . $topicGroupId . " AND user_id = " . $this->userId);
         if ($getTopic) {
             $topicGroupTbl->delete("id = " . $topicGroupId);
             //Delete all topic of this
             $topicTbl = new VC_DbTable_Store_Topic();
             $topicTbl->deleteTopicByTopicGroup($topicGroupId);
             $this->_helper->flashMessenger->addMessage(array('manage' => "Bạn đã xóa thành công."));
         } else {
             $this->_helper->flashMessenger->addMessage(array('manage' => "Thông tin nhóm chủ đề không hợp lệ."));
         }
     } else {
         $this->_helper->flashMessenger->addMessage(array('manage' => "Thông tin nhóm chủ đề không hợp lệ."));
     }
     $this->_redirect("topic-group/index");
 }