Laravel Ajax 响应和处理错误

Question

这是我的 html 文件的一部分。

<div class="form-group{{ $errors->has('address_name') ? ' has-error' : '' }}">
    <label for="address_name">{{ trans('address.address_name') }} <span class="required_field">*</span></label>
    <input name="address_name" type="text" class="form-control" id="address_name" placeholder="{{ trans('address.address_name_placeholder') }}" maxlength="30">
    @if($errors->has('address_name'))
        <span class="help-block">{{ $errors->first('address_name') }}</span>
    @endif
</div>

我需要在 Laravel 5.1 中处理 Ajax 请求的错误。这是我的处理代码

$validator = Validator::make($addressData, $this->rules());

    if ($validator->fails())
    {
        return response()->json([
            'success' => 'false',
            'errors'  => $validator->errors()->all(),
        ], 400);
    }
    else
    {
        //Save Address
        try
        {
            $this->insertAddress($addressData);
            return response()->json(['success' => true], 200);
        }
        catch(Exception $e)
        {
            return response()->json([
                'success' => 'false',
                'errors'  => $e->getMessage(),
            ], 400);
        }

    }

控制台消息

{"success":"false","errors":["The Address Name field is required.","The Recipient field is required.","The Address field is required."]}

我可以在控制台中看到错误，但是。在 Blade 中我无法达到 $errors。我该如何解决这个问题？

Answer 1

您可能正在尝试在不同的层次上工作。假设您没有在 ajax 脚本中处理错误响应，刀片无法知道错误响应，因为 html 页面是由控制器按原样提供的，并且在下次刷新之前不会更改。如果想让刀片知道响应，则需要异步捕获它，即ajax级别。
再次假设您使用标准 ajax 请求进行 POST，您可以执行以下操作：

    var form = $('#your-form-id');
        $.ajax({
            url: form.attr( 'action' ),
            type: 'POST',
            data: form.serialize(),
            success: function(data){
                // Successful POST
                // do whatever you want
            },
            error: function(data){
                // Something went wrong
                // HERE you can handle asynchronously the response 

                // Log in the console
                var errors = data.responseJSON;
                console.log(errors);

                // or, what you are trying to achieve
                // render the response via js, pushing the error in your 
                // blade page
                 errorsHtml = '<div class="alert alert-danger"><ul>';

                 $.each( errors.error, function( key, value ) {
                      errorsHtml += '<li>'+ value[0] + '</li>'; //showing only the first error.
                 });
                 errorsHtml += '</ul></div>';

                 $( '#form-errors' ).html( errorsHtml ); //appending to a <div id="form-errors"></div> inside form  
                });
            }
        });  

请注意，您需要在您的发布表单中添加一个 #form-errors div 才能使用。