public function isAllowed($privilege)
 {
     $id = $this->_session->getSessionId();
     if (!is_null($id)) {
         $user = $this->_userRepo->get($id);
         if (!is_null($user)) {
             if ($this->_acl->isAllowed($user->getRole(), $this->_resource, $privilege)) {
                 return true;
             } else {
                 $this->redirect('home/notprivileged?resource=' . $this->_resource . '&privilege=' . $privilege . '&role=' . $user->getRole());
             }
         }
     }
     $this->login();
 }