Laravel 5中间件"所有者"？

Question

我在创建"所有者"中间件时遇到了麻烦.

例如,我有一个Articles和User关联模型user_id的关键.

我想添加"所有者"中间件ArticlesController,因此该文章的唯一所有者可以编辑,更新和删除它.

我一直在寻找这个问题,但从未找到过可行的代码.他们中的一些人试图使其与Form Requests一起使用,但我对使用中间件感兴趣.

Answer 1

1. 创建中间件:

php artisan make:middleware OwnerMiddleware

namespace App\Http\Middleware;

use App\Article;
use Closure;
use Illuminate\Contracts\Auth\Guard;

class OwnerMiddleware
{
    /**
     * The Guard implementation.
     *
     * @var Guard
     */
    protected $auth;

    /**
     * Create a new filter instance.
     *
     * @param  Guard  $auth
     * @return void
     */
    public function __construct(Guard $auth)
    {
        $this->auth = $auth;
    }

    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        $articleId = $request->segments()[1];
        $article = Article::findOrFail($articleId);

        if ($article->user_id !== $this->auth->getUser()->id) {
            abort(403, 'Unauthorized action.');
        }

        return $next($request);
    }
}

2. 添加到app\Http\Kernel.php:

protected $routeMiddleware = [
    'owner' => 'App\Http\Middleware\OwnerMiddleware',
];

3. 在您的路线中使用中间件:

Route::group(['middleware' => ['owner']], function() {
    // your route
});

Answer 2

或者，您可以使用route和middleware参数，它具有一些优点：

• 即使请求结构发生变化，您的中间件仍然可以使用
• 中间件可用于不同资源
• 您可以在控制器内部使用它

这是中间件（app/Http/Middleware/AbortIfNotOwner.php）：

<?php

namespace App\Http\Middleware;

use Closure;

class AbortIfNotOwner
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @param  string    $resourceName
     * @return mixed
     */
    public function handle($request, Closure $next, $resourceName)
    {
        $resourceId = $request->route()->parameter($resourceName);

        $user_id = \DB::table($resourceName)->find($resourceId)->user_id;

        if ($request->user()->id != $user_id) {
            abort(403, 'Unauthorized action.');
        }

        return $next($request);
    }
}

内部app\Http\Kernel.php：

protected $routeMiddleware = [
     'owner' => 'App\Http\Middleware\AbortIfNotOwner',
];

在您的路由文件（app/Http/routes.php）中：

Route::group(['middleware' => ['owner:articles']], function() {
    // your route
});

并可以选择在控制器中调用它：

public function __construct()
{
    $this->middleware('owner:articles', ['only' => ['edit', 'update']]);
}