public function viewAction()
 {
     $ticketIdentity = $this->_request->get('ticket');
     $ticket = $this->getDi()->helpdeskTicketTable->load($ticketIdentity);
     if (!$this->strategy->canViewTicket($ticket)) {
         throw new Am_Exception_AccessDenied(___('Access Denied'));
     }
     $grid = new Am_Helpdesk_Grid($this->getRequest(), $this->getView());
     $grid->getDataSource()->getDataSourceQuery()->addWhere('m.user_id=?d', $ticket->user_id);
     $grid->actionsClear();
     $t = new Am_View();
     $t->assign('ticket', $ticket);
     $t->assign('user', $ticket->getUser());
     $t->assign('strategy', $this->strategy);
     $t->assign('historyGrid', $grid->render());
     $content = $t->render($this->strategy->getTemplatePath() . '/ticket.phtml');
     if ($this->isAjax()) {
         header('Content-type: text/html; charset=UTF-8');
         echo $content;
     } else {
         $this->view->assign('content', $content);
         $this->view->display($this->strategy->getTemplatePath() . '/index.phtml');
     }
 }