从控制器重定向后在 Laravel 中显示错误消息

Question

如何在 Laravel 中重定向的视图中显示验证消息？

这是我在控制器中的功能

public function registeruser()
{
    $firstname = Input::get('firstname');
    $lastname = Input::get('lastname');
    $data  =  Input::except(array('_token')) ;
    $rule  =  array(
                'firstname'       => 'required',
                'lastname'         => 'required',
                   ) ;
    $validator = Validator::make($data,$rule);
    if ($validator->fails())
    {
    $messages = $validator->messages();
    return Redirect::to('/')->with('message', 'Register Failed');
    }
    else
    {
    DB::insert('insert into user (firstname, lastname) values (?, ?)',
                                array($firstname, $lastname));
    return Redirect::to('/')->with('message', 'Register Success');
    }
    }

我知道下面给出的代码是一个不好的尝试，但我该如何解决它，什么是 我错过了

@if($errors->has())
    @foreach ($errors->all() as $error)
        <div>{{ $error }}</div>
    @endforeach
@endif

更新：以及如何在特定字段附近显示错误消息

Answer 1

你可以像下面这样使用html标签打印：

@if($errors->any())
    {!! implode('', $errors->all('<div>:message</div>')) !!}
@endif

Answer 2

如果你也在使用 Laravel 8 和 Bootstrap 5，你可以像这样使用警报整齐地显示错误：

@if($errors->any())
    <div class="alert alert-danger alert-dismissible">
        <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
        <strong>
            {!! implode('<br/>', $errors->all('<span>:message</span>')) !!}
        </strong>
    </div>
@endif

Answer 3

如果使用toastr，请使用以下以浮动消息显示错误

@if($errors->any()) 
     <script type="text/javascript">
         toastr.error({{ implode(' ', $errors->all()) }});
    </script> 
@endif

Answer 4

在输入字段下方我包含附加视图：

@include('input-errors', ['inputName' => 'inputName']) #For your case it would be 'email'

输入错误.blade.php

@foreach ($errors->get($inputName) as $message)
    <span class="input-error">{{ $message }}</span>
@endforeach

CSS - 为消息添加红色。

.input-error {
    color: #ff5555;
}

Answer 5

这也是完成任务的好方法。

@if($errors->any())
  {!! implode('', $errors->all('<div class="alert alert-danger">:message</div>')) !!}
@endif

我们可以根据需要格式化标签。

Answer 6

$validator = Validator::make($request->all(), [ 'email' => 'required|email', 'password' => 'required', ]);

if ($validator->fails()) { return $validator->errors(); }

Answer 7

Laravel 4

当验证失败时返回验证错误。

if($validator->fails()) {
    return Redirect::back()->withErrors($validator);
}

您可以使用

在您的视图中捕获错误

@if($errors->any())
    {{ implode('', $errors->all('<div>:message</div>')) }}
@endif

更新

要在每个字段下显示错误，您可以这样做。

<input type="text" name="firstname">
@if($errors->has('firstname'))
    <div class="error">{{ $errors->first('firstname') }}</div>
@endif

使用 css 获得更好的显示样式。

您可以参考文档here.

更新 2

一次显示所有错误

@if($errors->any())
    {!! implode('', $errors->all('<div>:message</div>')) !!}
@endif

在每个字段下显示错误。

@error('firstname')
    <div class="error">{{ $message }}</div>
@enderror

Answer 8

为了让它看起来不错，你可以使用很少的引导帮助

@if(count($errors) > 0 )
<div class="alert alert-danger alert-dismissible fade show" role="alert">
    <button type="button" class="close" data-dismiss="alert" aria-label="Close">
        <span aria-hidden="true">&times;</span>
    </button>
    <ul class="p-0 m-0" style="list-style: none;">
        @foreach($errors->all() as $error)
        <li>{{$error}}</li>
        @endforeach
    </ul>
</div>
@endif

Answer 9

Laravel 5.8.13

新增了 Laravel Blade 错误指令

// Before
@if ($errors->has('email'))
    <span>{{ $errors->first('email') }}</span>
@endif

// After:
@error('email')
    <span>{{ $message }}</span>
@enderror

Answer 10

{!! Form::text('firstname', null !!}

@if($errors->has('firstname')) 
    {{ $errors->first('firstname') }} 
@endif

Answer 11

如果你想从你所在的控制器加载视图：

if ($validator->fails()) {
    return self::index($request)->withErrors($validator->errors());
}

如果您想快速显示所有错误但有更多控制权：

 @if ($errors->any())
     @foreach ($errors->all() as $error)
         <div>{{$error}}</div>
     @endforeach
 @endif

Answer 12

如果上述方法对您不起作用，请将所有内容移至 kernel.php 请记住，除了上述解决方案之外，您还必须移动 kernel.php 中的所有这些行

让我先显示它在文件中的样子..

protected $middleware = [

    \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
];

/**
 * The application's route middleware groups.
 *
 * @var array
 */
protected $middlewareGroups = [
    'web' => [
        \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
        \Illuminate\View\Middleware\ShareErrorsFromSession::class,
        \App\Http\Middleware\VerifyCsrfToken::class,
    ],

    'api' => [
        'throttle:60,1',
    ],
];

现在你要做的是

protected $middleware = [
    \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
     \App\Http\Middleware\EncryptCookies::class,
        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
        \Illuminate\Session\Middleware\StartSession::class,
        \Illuminate\View\Middleware\ShareErrorsFromSession::class,
        \App\Http\Middleware\VerifyCsrfToken::class,
];

/**
 * The application's route middleware groups.
 *
 * @var array
 */
protected $middlewareGroups = [
    'web' => [

    ],

    'api' => [
        'throttle:60,1',
    ],
];

即;

Answer 13

@if ($errors->has('category'))
    <span class="error">{{ $errors->first('category') }}</span>
@endif