public function signupAction()
 {
     $this->_helper->viewRenderer->setNoRender(true);
     if ($this->getRequest()->isPost()) {
         $signupForm = new Application_Form_Signup();
         if ($signupForm->isValid($this->getRequest()->getParams())) {
             //save new user
             $user = new Application_Model_Models_User($signupForm->getValues());
             $user->registerObserver(new Tools_Mail_Watchdog(array('trigger' => Tools_Mail_SystemMailWatchdog::TRIGGER_SIGNUP)));
             $user->setRoleId(Tools_Security_Acl::ROLE_MEMBER);
             if (isset($this->_helper->session->refererUrl)) {
                 $user->setReferer($this->_helper->session->refererUrl);
             }
             $signupResult = Application_Model_Mappers_UserMapper::getInstance()->save($user);
             if (!$user->getId()) {
                 $user->setId($signupResult);
             }
             //send mails by notifying mail observer about successful sign-up,
             $user->notifyObservers();
             //redirect to signup landing page
             $signupLandingPage = Tools_Page_Tools::getLandingPage(Application_Model_Models_Page::OPT_SIGNUPLAND);
             if ($signupLandingPage instanceof Application_Model_Models_Page) {
                 $this->_redirect($this->_helper->website->getUrl() . $signupLandingPage->getUrl());
                 exit;
             } else {
                 $this->_redirect($this->_helper->website->getUrl());
             }
         } else {
             $this->_helper->flashMessenger->addMessage(Tools_Content_Tools::proccessFormMessagesIntoHtml($signupForm->getMessages(), get_class($signupForm)));
             $signupPageUrl = $this->_helper->session->signupPageUrl;
             unset($this->_helper->session->signupPageUrl);
             $this->_redirect($this->_helper->website->getUrl() . ($signupPageUrl ? $signupPageUrl : ''));
         }
     }
 }