public function authenticateAction()
 {
     $form = Editor_Forms_Login::getInstance();
     $request = $this->getRequest();
     if (!$this->getRequest()->isPost()) {
         $this->_helper->redirector('index');
     }
     if (!$form->isValid($this->getRequest()->getPost())) {
         return $this->_forward('index');
     }
     $tenant = $form->getValue('tenant');
     $username = $form->getValue('username');
     $password = $form->getValue('password');
     $login = new Editor_Models_Login();
     $login->setData($tenant, $username, $password);
     if ($login->isValid()) {
         $session = new Zend_Session_Namespace('Zend_Auth');
         // Set the time of user logged in
         $session->setExpirationSeconds(30 * 24 * 3600);
         // If "remember" was marked
         if ((int) $form->getValue('rememberme')) {
             Zend_Session::rememberMe();
         }
         // Clears user specific options which are kept in the session if a new login is made.
         $userOptions = new Zend_Session_Namespace('userOptions');
         $userOptions->unsetAll();
         $this->getHelper('FlashMessenger')->addMessage(_('Succesfully logged in'));
         $this->_helper->redirector('index', 'index');
     } else {
         $this->getHelper('FlashMessenger')->setNamespace('error')->addMessage(array_pop($login->getMessages()));
         $this->_helper->redirector('index');
     }
 }