public function editAction()
 {
     $form = new Admin_Form_StudentForm();
     $form->submit->setLabel("Save");
     $studentModel = new Admin_Model_Student();
     $id = $this->_getParam('id', 0);
     $data = $studentModel->getDetailById($id);
     $form->populate($data);
     $this->view->form = $form;
     try {
         if ($this->getRequest()->isPost()) {
             if ($form->Valid($this->getRequest()->getPost())) {
                 $formData = $this->getRequest()->getPost();
                 $id = $formData['student_id'];
                 unset($formData['student_id']);
                 unset($formData['submit']);
                 $studentModel->update($formData, $id);
                 $this->_helper->FlashMessenger->addMessage(array("edit" => "Successfully Student Edited"));
                 $this->_helper->redirector('index');
             }
         }
     } catch (Exception $e) {
         $this->_helper->FlashMessenger->addMessage(array("error" => $e->getMessage()));
     }
 }