如果提交的表单无效,具有 @Method( "post" ) 的控制者应如何处理请求?



我在symfony2中有一个控制器,如下所示,如果用户表单有效,它将重定向到其他链接,但如果出现错误,它将保留在同一页面中并显示错误。当客户端验证被禁用并且只有服务器端验证在检查错误时,这只是一个简单的通用场景。

/**
 * Creates a new User entity.
 *
 * @Route("/create", name="admin_user_create")
 * @Method("post")
 * @Template("UserBundle:User:new.html.twig")
 */
public function createAction()
{
    $entity  = new User();
    $request = $this->getRequest();
    $form    = $this->createForm(new UserType() , $entity);
    $form->bindRequest($request);
    if($form->isValid())
    {
        // DO SOMETHING ... 
        return $this->redirect($this->generateUrl('some_link' , array( 'user_id' => $entity->getId() )));
    }
    // If the form is NOT valid, it will render the template and shows the errors.   
    return array(
        'entity' => $entity ,
        'form'   => $form->createView()
    );
}

场景如下:

  1. 用户为表单输入了一些无效数据
  2. 用户提交表单
  3. 控制器检查表单是否有效
  4. 由于它无效,它将呈现模板,在这种情况下为

    @Template("UserBundle:User:new.html.twig")
    
  5. 浏览器中的路由将为/create
  6. 如果浏览器链接上的用户click而不是post将收到错误

我该怎么解决这个问题?我必须再次重定向吗?既然方法是post,是否可以重定向?

不要指定@Method("POST")并在方法中执行此操作:

if ($request->getMethod() == 'POST')
{
    $form->bindRequest($request);
    if($form->isValid())
    {
        // DO SOMETHING ... 
        return $this->redirect($this->generateUrl('some_link' , array( 'user_id' => $entity->getId() )));
    }
}

您可以接受GETPOST并执行某些链接:

/**
 * Creates a new User entity.
 *
 * @Route("/create", name="admin_user_create")
 * @Method("GET|POST")
 * @Template("UserBundle:User:new.html.twig")
 */
public function createAction()
{
    $entity  = new User();
    $request = $this->getRequest();
    $form    = $this->createForm(new UserType() , $entity);
    // Is this POST? Bind the form...
    if('POST' == $request->getMethod()) $form->bindRequest($request);
    // GET or from not valid? Return the view...
    if('GET' == $request->getMethod() || !$form->isValid()) :
        return array(
            'entity' => $entity ,
            'form'   => $form->createView()
        );
    endif;
    // Success, then persist the entity and redirect the user
    return $this->redirect($this->generateUrl('some_link',
        array('user_id' => $entity->getId()))
    );
}
/**
 * Creates a new User entity.
 *
 * @Route("/create", name="admin_user_create")
 * @Method("GET|POST")
 * @Template("Use`enter code here`rBundle:User:new.html.twig")
 */
public function createAction()
{
    $entity  = new User();
    $request = $this->getRequest();
    $form    = $this->createForm(new UserType() , $entity);
// Is this POST? Bind the form...
if('POST' == $request->getMethod()) $form->bindRequest($request);
// GET or from not valid? Return the view...
if('GET' == $request->getMethod() || !$form->isValid()) :
    return array(
        'entity' => $entity ,
        'form'   => $form->createView()
    );
endif;
// Success, then persist the entity and redirect the user
return $this->redirect($this->generateUrl('some_link',
    array('user_id' => $entity->getId()))
);

}

最新更新