public function editAction()
    {
        $model = $this->loadModel();
        if ($model->isObjectNew()) {
            $this->_forward('noroute');
            return;
        }

        if ($this->getRequest()->isPost()) {
            $postData = $this->getRequest()->getPost();
            try {
                foreach ($this->preprocessPostData($postData) as $key => $value) {
                    $model->setDataUsingMethod($key, $value);
                }
                $model->save();
                $this->_redirectUrl($this->getHelper()->getGridUrl());
                $this->_getSession()->addSuccess('Saved Successfully');
                return;
            } catch (Exception $e) {
                if ($e instanceof Zend_Db_Statement_Exception && $e->getChainedException() instanceof PDOException) {
                    $e = $e->getChainedException();
                }
                Mage::logException($e);
                $this->_getSession()->addError($e->getMessage());
            }
        }

        $this->loadLayout();
        $this->renderLayout();
    }