Laravel 5.2验证错误未出现 [英] Laravel 5.2 validation errors not appearing

问题描述

我正在尝试获取验证错误以显示在Laravel中.

I am trying to get validation errors to show up in Laravel.

我有一个类似的UserController设置:

I have a UserController set up like so:

<?php

namespace App\Http\Controllers;

use App\User;
use App\Http\Controllers\Controller;
//Use Request;
Use Flash;
Use Illuminate\Http\Request;

class UserController extends Controller
{
    /**
     * Show the profile for the given user.
     *
     * @param  int  $id
     * @return Response
     */
    public function showProfile($id)
    {
        return view('user.profile', ['user' => User::findOrFail($id)]);
    }

    public function store(Request $request) {
        $this->validate($request, [
            'email' => 'required|unique:users|email|max:255',
        ]);

        if($this) {

        $input = Request::all();

        User::create($input);

        return redirect('/');

        }
        else {

            return redirect('/')->withErrors($validator);
        }
    }
}

在我看来(layout.blade.php)，我包括:

In my view (layout.blade.php), I have included:

@if (count($errors) > 0)
@foreach ($errors->all() as $error)
   {{!! $errors !!}}
@endforeach
@endif

要说明这条路线，我有:

To account for the route, I have:

Route::group(['middleware' => ['web']], function () {
    Route::get('/', function (){
        return view('home');
    });
});

不幸的是，当我输入不应验证的坏"数据时，我没有看到任何错误(但是它没有存储在db中，所以就是这样).

Unfortunately, when I enter "bad" data that shouldn't be verified, I am not seeing any error (but it is not being stored in the db, so there's that).

另一个注意事项是，在呈现刀片模板时，我看到了一个额外的}"括号，但我不确定为什么会出现它.

One other note, when the blade template is rendered, I am seeing an extra "}" bracket, which I'm not sure why that is there.

推荐答案

有几处错误，或者可以在此处进行改进. UserController上的store方法有很多奇怪的问题. $this将始终为true，因为php中的对象为true.另外，您将$validator传递到withErrors，这是没有意义的，因为没有变量validator.

There are a couple things wrong or that can be improved here. The store method on the UserController has a lot of weird issues. $this will always be true because objects are true in php. Also, you pass in $validator into withErrors which doesn't make sense because there's no variable validator.

public function store(Request $request) {
    $this->validate($request, [
        'email' => 'required|unique:users|email|max:255',
    ]);

    User::create(Request::all());
    return redirect('/');
}

如果出现验证错误，validate方法将抛出Illuminate\Foundation\Validation\ValidationException.该异常应在App\Exceptions\Handler的$dontReport实例变量中列出，如下所示:

The validate method will throw an Illuminate\Foundation\Validation\ValidationException if there is a validation error. This exception should be listed in the $dontReport instance variable in App\Exceptions\Handler as seen below:

protected $dontReport = [
    AuthorizationException::class,
    HttpException::class,
    ModelNotFoundException::class,
    ValidationException::class,
];

如果您更改了这些值，删除或修改了ValidatesRequest特征，则可能已破坏了此功能.

If you have changed these values, removed, or modified the ValidatesRequest trait you may have broken this functionality.

您的错误报告代码也不正确:

Your error reporting code is not correct either:

@foreach ($errors->all() as $error)
   {!! $errors->first() !!}
@endforeach

这里有3个变化.首先，我删除了外部错误大小检查，但这并没有给您带来任何好处.接下来，我修复了您额外的}错误，取消转义数据的语法为{!! $errors->first() !!}.最后，我调用了->first()，它返回了与该特定字段相关的第一个错误.

There are 3 changes here. First I removed the outer errors size check, this doesn't really get you anything. Next, I fixed your extra } error, the syntax for un-escaping data is {!! $errors->first() !!}. Lastly, I called ->first() this returns the first error associated with that particular field.

我认为必须注意，验证异常将创建对上一页的重定向响应.确定上一页的逻辑可以在Illuminate\Routing\UrlGenerator::previous()中找到.

I think it's important to note that the validation exception will create a redirect response to the previous page. The logic for determining the previous page can be found in Illuminate\Routing\UrlGenerator::previous().

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