Question

我正在验证用户登录，并且如果用户提交了不进行身份验证的详细信息，则希望在表单中附加错误消息。

在FieldSet中，我可以看到函数setMessages()，但这只会与元素键匹配并设置。

如何将错误消息附加到表单而不是表单元素？

以下代码位于LoginForm类中。

public function isValid()
{
    $isValid = parent::isValid();
    if ($isValid)
    {
        if ($this->getMapper())
        {
            $formData = $this->getData();
            $isValid = $this->getMapper()->ValidateUandP($formData['userName'], $formData['password']);
        }
        else
        {
          // The following is invalid code but demonstrates my intentions
          $this->addErrorMessage("Incorrect username and password combination");
        }
    }

    return $isValid;
}

Answer 1

第一个示例是从数据库进行验证，只是将错误消息发送回表单：

//Add this on the action where the form is processed
if (!$result->isValid()) {
            $this->renderLoginForm($form, 'Invalid Credentials');
            return;
        }

下一个是向表单本身添加简单验证：

//If no password is entered then the form will display a warning (there is probably a way of changing what the warning says too, should be easy to find on google :)
$this->addElement('password', 'password', array(
            'label'    => 'Password: ',
            'required' => true,
        ));

我希望这是有用的。

Answer 2

在ZF1中：为了将错误消息附加到表单 - 您可以为此创建一个装饰元素：

取自：

http://mwop.net/blog/165-Login-and-Authentication-with-Zend-Framework.html

class LoginForm extends Zend_Form
{
    public function init()
    {
        // Other Elements ...

        // We want to display a 'failed authentication' message if necessary;
        // we'll do that with the form 'description', so we need to add that
        // decorator.
        $this->setDecorators(array(
            'FormElements',
            array('HtmlTag', array('tag' => 'dl', 'class' => 'zend_form')),
            array('Description', array('placement' => 'prepend')),
            'Form'
        ));
    }
}

然后作为控制器中的一个例子：

// Get our authentication adapter and check credentials
$adapter = $this->getAuthAdapter($form->getValues());
$auth    = Zend_Auth::getInstance();
$result  = $auth->authenticate($adapter);
if (!$result->isValid()) {
    // Invalid credentials
    $form->setDescription('Invalid credentials provided');
    $this->view->form = $form;
    return $this->render('index'); // re-render the login form
}

不确定这是否仍适用于ZF2

如何向表单添加错误消息？

2 个答案: