Laravel 5.2验证错误 [英] Laravel 5.2 validation errors

问题描述

我在Laravel 5.2中进行验证时遇到了一些麻烦 当我尝试在像这样的控制器中验证请求时

I have some trouble with validation in Laravel 5.2 When i try validate request in controller like this

$this->validate($request, [
                'title' => 'required',
                'content.*.rate' => 'required',
            ]);

Validator捕获错误，但不要将它们存储到会话中，因此当我尝试在模板中调用此代码时

Validator catch error, but don't store them to session, so when i'm try to call in template this code

 @if (isset($errors) && count($errors) > 0)
        <div class="alert alert-danger">
            <ul>
                @foreach ($errors->all() as $error)
                    <li>{{ $error }}</li>
                @endforeach
            </ul>
        </div>
    @endif

Laravel抛出错误

Laravel throw the error

Undefined variable: errors (View: /home/vagrant/Code/os.dev/resources/views/semantic/index.blade.php)

当我尝试使用此代码进行验证

When i'm try validate with this code

 $validator = Validator::make($request->all(), [
                'title' => 'required',
                'content.*.rate' => 'required'
            ]);

            if ($validator->fails()) {
                return redirect()
                    ->back()
                    ->withInput($request->all())
                    ->withErrors($validator, 'error');
            }

变量$ error在模板中也不可用，但是如果我尝试在控制器中显示错误

Variable $error also not available in template but if i try to display errors in controller

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

显示错误，但我无法从模板访问它们.

Errors displays but i can't access to them from template.

怎么了?

推荐答案

从Laravel 5.2.27开始更新

Laravel现在默认支持Web中间件，如您在此处看到的:来源

Laravel now supports the web middleware by default as you can see here: source

换句话说，您不再需要将路由包装在Web中间件组周围，因为它可以在RouteServiceProvider文件中为您完成.但是，如果您使用的是5.2.0和5.2.26之间的Laravel版本，请参考以下方法:

In other words, you no longer need to wrap your routes around the web middleware group because it does it for you in the RouteServiceProvider file. However, if you are using a version of Laravel between 5.2.0 and 5.2.26, then refer to the method below:

以下内容仅适用于Laravel 5.2.0至5.2.26

我没有看到您的routes.php或Kernel.php文件，这是我所怀疑的情况.

Without seeing your routes.php or Kernel.php file, here is what I suspect is happening.

中间件的工作方式已从5.2和5.1更改.在5.1中，您会在app/Http/Kernel.php文件中看到它:

The way middlewares work has changed from 5.2 and 5.1. In 5.1, you will see this in your app/Http/Kernel.php file:

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,
];

此数组是应用程序的全局HTTP中间件堆栈.换句话说，它们会按每个请求运行.在以下特定中间件上记笔记:Illuminate\View\Middleware\ShareErrorsFromSession.这就是在每个请求上添加$errors变量的原因.

This array is your application's global HTTP middleware stack. In other words, they run on every request. Take a note at this particular middleware: Illuminate\View\Middleware\ShareErrorsFromSession. This is what adds the $errors variable on every request.

但是，在5.2中，情况已更改，以允许在同一应用程序中同时使用Web UI和API.现在，您将在同一文件中看到它:

However, in 5.2, things have changed to allow for both a web UI and an API within the same application. Now, you will see this in that same file:

protected $middleware = [
    \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
];

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',
    ],
];

全局中间件堆栈现在仅检查维护.现在，您有一个名为"web"的中间件组，其中包括大量以前的全局中间件.请记住，这样做是为了在同一应用程序中同时允许Web UI和API.

The global middleware stack now only checks for maintenance. You now have a middleware group called "web" that includes a bulk of the previous global middleware. Remember that it is like this to allow for both a web UI and an API within the same application.

那么我们如何找回$errors变量?

So how do we get that $errors variable back?

在路由文件中，需要将路由添加到网络"中间件组中，以便您可以在每次请求时访问该$errors变量.像这样:

In your routes file, you need to add your routes within the "web" middleware group for you to have access to that $errors variable on every request. Like this:

Route::group(['middleware' => ['web']], function () {
    // Add your routes here
});

如果您不打算构建API，则另一个选择是像5.1中那样将网络"中间件移至全局中间件堆栈.

If you aren't going to build an API, another option is to move the "web" middlewares to the global middleware stack like in 5.1.

这篇关于Laravel 5.2验证错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！