Question

我正在使用Laravel开发Web应用程序。我现在想做的是尝试获取GET或渲染视图中的登录尝试次数。我可以在LoginController的发布请求（validateLogin方法）中获取登录尝试的次数，如下所示。

$this->limiter()->attempts($this->throttleKey($request))

问题是validateLogin方法采用一个参数Request $ request。我想做的是，我想获取登录尝试失败的次数或LoginController的showLoginForm方法中的尝试次数。我覆盖了showLoginForm方法。我尝试过了。

$this->limiter()->attempts($this->throttleKey(request()))

但是它总是返回零。那么，如何获得LoginController的GET或showLoginForm方法中的登录尝试次数？

Answer 1

登录失败时，增加数字，登录成功后，清除尝试。可以使用会话来完成。通过会话，您可以在刀片文件和控制器中使用它。

在您的app/Http/Controllers/Auth/LoginController.php文件中：

use Illuminate\Http\Request;

/**
 * Get the failed login response instance.
 *
 * @param  \Illuminate\Http\Request  $request
 * @return \Symfony\Component\HttpFoundation\Response
 *
 * @throws \Illuminate\Validation\ValidationException
 */
protected function sendFailedLoginResponse(Request $request)
{
    $attempts = session()->get('login.attempts', 0); // get attempts, default: 0
    session()->put('login.attempts', $attempts + 1); // increase attempts

    throw ValidationException::withMessages([
        $this->username() => [trans('auth.failed')],
    ]);
}

/**
 * The user has been authenticated.
 *
 * @param  \Illuminate\Http\Request  $request
 * @param  mixed  $user
 * @return mixed
 */
protected function authenticated(Request $request, $user)
{
    session()->forget('login.attempts'); // clear attempts
}

然后在您的视图或控制器中，您可以从会话中获取该号码：

{{ session()->get('login.attempts', 0) }}

Answer 2

When we have a look at the throttleKey method, we see that it creates a key out of the email address the user used tried to log in with and the IP address of the user. The IP address should already be in the $request object if you add it as a parameter to the showLoginForm method, but the email address wouldn't be there. You could add it using the old helper function.

public function showLoginForm(Request $request)
{

    $request->merge(['email' => old('email')]);

    Log::info($this->limiter()->attempts($this->throttleKey($request)));

    return view('auth.login');
}

Edit: Another way to do this would be to overwrite the sendFailedLoginResponse method and add the number attempts to the error bag. For example, in your LoginController:

protected function sendFailedLoginResponse(Request $request)
{
    throw ValidationException::withMessages([
        $this->username() => [trans('auth.failed')],
        'attempts' => $this->limiter()->attempts($this->throttleKey($request)),
    ]);
}

Then you could get the number of attempts in your template with <strong>{{ $errors->first('attempts') }}</strong>

在GET中或在Laravel中渲染视图时获取登录尝试次数

2 个答案: