如何在沒有任何重定向的情況下發回登錄錯誤？ Laravel 5.4

Question

在Laravel代碼： AuthenticatesUsers.php有一個函數可以將錯誤消息返回給用戶，例如，如果他們沒有輸入注冊的電子郵件地址：

protected function sendFailedLoginResponse(Request $request)
{
    $errors = [$this->username() => trans('auth.failed')];

    if ($request->expectsJson()) {
        return response()->json($errors, 422);
    }

    return redirect()->back()
        ->withInput($request->only($this->username(), 'remember'))
        ->withErrors($errors);
}

我的問題是我正在使用“模態”框，因此當此函數重定向到同一頁面時，模態消失，並且用戶僅在單擊以再次查看模態時才能看到錯誤。

如何不使用redirect（）或進行任何刷新就將數據發送回去？

這是我正在使用的AJAX調用：

<script type="text/javascript">
$(function(){

    $('#login').click(function(e) {
        e.preventDefault();
        $('#myModal').modal();
    });

    $(document).on('submit', '#formLogin', function(e) {  
        e.preventDefault();

        $.ajax({
            method: $(this).attr('method'),
            url: $(this).attr('action'),
            data: $(this).serialize(),
            dataType: "json"
        })
        .done(function(data) {
            console.log(data);


        })
        .fail(function(data) {
            console.log(data);

        });
    });

})

</script>

為了完成，這是完整的Modal，包括注冊和登錄表單：

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">

    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
                <h4 class="modal-title" id="myModalLabel">recharge.ae | Welcome!</h4>
            </div>
            <div class="modal-body">


            <div id="reg-div">
                <h4>New customer? Register below.</h4>
                <form class="form-horizontal" method="POST" action="{{ route('register') }}" id="formRegister">
                            {{ csrf_field() }}

                            <div class="form-group{{ $errors->has('name') ? ' has-error' : '' }}">
                                <label for="name" class="col-md-4 control-label">Name</label>

                                <div class="col-md-6">
                                    <input id="name" type="text" class="form-control" name="name" value="{{ old('name') }}" required autofocus>
                                    {{-- <small class="help-block"></small> --}}

                                    @if ($errors->has('name'))
                                        <span class="help-block">
                                            <strong>{{ $errors->first('name') }}</strong>
                                        </span>
                                    @endif
                                </div>
                            </div>

                            <div class="form-group{{ $errors->has('email') ? ' has-error' : '' }}">
                                <label for="email" class="col-md-4 control-label">E-Mail Address</label>

                                <div class="col-md-6">
                                    <input id="email-reg" type="email" class="form-control" name="email" value="{{ old('email') }}" required>
                                    {{-- <small class="help-block"></small> --}}

                                    @if ($errors->has('email'))
                                        <span class="help-block">
                                            <strong>{{ $errors->first('email') }}</strong>
                                        </span>
                                    @endif
                                </div>
                            </div>

                            <div class="form-group{{ $errors->has('password') ? ' has-error' : '' }}">
                                <label for="password" class="col-md-4 control-label">Password</label>

                                <div class="col-md-6">
                                    <input id="password" type="password" class="form-control" name="password" required>
                                    {{-- <small class="help-block"></small> --}}

                                    @if ($errors->has('password'))
                                        <span class="help-block">
                                            <strong>{{ $errors->first('password') }}</strong>
                                        </span>
                                    @endif
                                </div>
                            </div>

                            <div class="form-group">
                                <label for="password-confirm" class="col-md-4 control-label">Confirm Password</label>

                                <div class="col-md-6">
                                    <input id="password-confirm" type="password" class="form-control" name="password_confirmation" required>
                                </div>
                            </div>

                            <div class="form-group">
                                <div class="col-md-6 col-md-offset-4">
                                    <button type="submit" class="btn btn-primary">
                                        Register and Log Me In
                                    </button>
                                </div>
                            </div>
                        </form>
                    </div><!--#reg-div-->  


                    <div id="login-div">
                    <h4>Returning customer? Login below.</h4>
                        <form class="form-horizontal" method="POST" action="{{ route('login') }}" id="loginForm">
                            {{ csrf_field() }}

                            <div class="form-group{{ $errors->has('email') ? ' has-error' : '' }}">
                                <label for="email" class="col-md-4 control-label">E-Mail Address</label>

                                <div class="col-md-6">
                                    <input id="email" type="email" class="form-control" name="email" value="{{ old('email') }}" required autofocus>

                                    @if ($errors->has('email'))
                                        <span class="help-block">
                                            <strong>{{ $errors->first('email') }}</strong>
                                        </span>
                                    @endif
                                </div>
                            </div>

                            <div class="form-group{{ $errors->has('password') ? ' has-error' : '' }}">
                                <label for="password" class="col-md-4 control-label">Password</label>

                                <div class="col-md-6">
                                    <input id="password" type="password" class="form-control" name="password" required>

                                    @if ($errors->has('password'))
                                        <span class="help-block">
                                            <strong>{{ $errors->first('password') }}</strong>
                                        </span>
                                    @endif
                                </div>
                            </div>

                            <div class="form-group">
                                <div class="col-md-6 col-md-offset-4">
                                    <div class="checkbox">
                                        <label>
                                            <input type="checkbox" name="remember" {{ old('remember') ? 'checked' : '' }}> Remember Me
                                        </label>
                                    </div>
                                </div>
                            </div>

                            <div class="form-group">
                                <div class="col-md-8 col-md-offset-4">
                                    <button type="submit" class="btn btn-primary">
                                        Login
                                    </button>

                                    <a class="btn btn-link" href="{{ route('password.request') }}">
                                        Forgot Your Password?
                                    </a>
                                </div>
                            </div>
                        </form>  
                    </div><!-- #login-div -->          

            </div>
        </div>
    </div>

</div>

Answer 1

好吧，返回一個JSON響應而不是重定向頁面。 這是操作方法。 而不是這個

return redirect()->back()
        ->withInput($request->only($this->username(), 'remember'))
        ->withErrors($errors);

寫這個

return json_encode([ 'errorr' => $$errors ]);

通過上面的行，您可以在ajax的done函數中獲取數據。 在那里，您只需要像這樣解析JSON

data = JSON.parse(data);

然后您可以訪問此類data.errors類的錯誤， 但是在這里您需要記住一件事，您需要自己將這些錯誤附加到html中

PS：如果您有不明白的地方，請隨時詢問