public function signAction()
 {
     $request = $this->getRequest();
     $form = new Application_Form_Guestbook();
     if ($request->isPost() && $form->isValid($request->getPost())) {
         $comment = new Application_Model_Guestbook($form->getValues());
         $mapper = new Application_Model_GuestbookMapper();
         $mapper->save($comment);
         return $this->_helper->redirector('index');
     }
     $this->view->form = $form;
 }
 public function signAction()
 {
     $request = $this->getRequest();
     $form = new Application_Form_Guestbook();
     $mapper = new Application_Model_GuestbookMapper();
     $blog_id = $this->getRequest()->getParam('id');
     if ($blog_id) {
         $formData = $mapper->find($blog_id);
         $form->populate($formData);
     }
     if ($this->getRequest()->isPost()) {
         if ($form->isValid($request->getPost())) {
             $comment = new Application_Model_Guestbook($form->getValues());
             $mapper->save($comment);
             $this->_helper->flashMessenger->addMessage('Saved');
             return $this->_helper->redirector('index');
         }
     }
     $this->view->form = $form;
 }