Auth:：user（）返回null

Question

我使用Laravel 5.2，中间件有问题。routes.php里有密码

    use Illuminate\Contracts\Auth\Access\Gate;


    Route::group(['middleware' => 'web'], function () {

        Route::auth();

        Route::get('/', 'HomeController@index');
    });


    Route::group(['prefix'=>'admin',  'middleware' => 'admin'], function(){
        Route::get('/', function(){
            return view('admin.index');
        });
        Route::get('/user', function(){
            return view('admin.user');
        });
    });

Kernel.php：

    protected $routeMiddleware = [
    ...
     'admin' => \App\Http\Middleware\AdminPanel::class,
    ];

AdminPanel.php

    namespace App\Http\Middleware;


    use Closure;
    use Illuminate\Support\Facades\Auth;
    use App\Role;

    class AdminPanel
    {
        public function handle($request, Closure $next)
        {
            $user = Auth::user();
            dd($user);

            if($user){
                $role = Role::whereName('admin')->first();
                if($user->hasRole($role)){
                    return $next($request);
                }
            }
            return redirect('/');
        }

所以，

$user = Auth::user()

Answer 1

在控制器的构造函数中定义中间件，它将在这里完成任务

public function __construct()
{
    $this->middleware('auth:api');
}

Answer 2

任何使用Auth（）的路由都必须封装在web中间件中。很接近，只需移动Route:：group（['prefix'=

Route::group(['middleware' => 'web'], function () {

    Route::auth();

    Route::get('/', 'HomeController@index');

    // Moving here will ensure that sessions, csrf, etc. is included in all these routes
    Route::group(['prefix'=>'admin',  'middleware' => 'admin'], function(){
        Route::get('/', function(){
            return view('admin.index');
        });

        Route::get('/user', function(){
            return view('admin.user');
        });
    });
});

Answer 3

我遇到了一种情况，即Auth:：user（）总是返回null，这是因为我试图在控制器的构造函数中获取用户。

我意识到您无法访问控制器构造函数中经过身份验证的用户，因为中间件尚未运行。

作为一种选择，您可以直接在控制器的构造函数中定义基于闭包的中间件。

namespace App\Http\Controllers;

use App\User;
use Illuminate\Support\Facades\Auth;
use App\Http\Controllers\Controller;

class ProjectController extends Controller
{
    protected $user;

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware(function ($request, $next) {

            $this->user = Auth::user();

            return $next($request);
        });
    }
}