public function deleteAction()
 {
     $id = $this->_request->getParam('id');
     $mTopics = new Forum_Models_Topics();
     $mTopics->delete('topic_id=' . $id);
     exit;
 }
 public function viewAction()
 {
     $id = $this->_request->getParam('id');
     $mTopics = new Forum_Models_Topics();
     $topic = $mTopics->fetchRow('topic_id=' . $id);
     $this->view->assign('topic', $topic);
 }