如何在使用用户与管理员双中间件时让Blade模板对两者均可见？

First, let's confirm you've got your authentication guards set up correctly in config/auth.php (this is foundational for the rest to work):

'guards' => [
    'web' => [
        'driver' => 'session',
        'provider' => 'users',
    ],
    'admin' => [
        'driver' => 'session',
        'provider' => 'admins',
    ],
],

'providers' => [
    'users' => [
        'driver' => 'eloquent',
        'model' => App\Models\User::class,
    ],
    'admins' => [
        'driver' => 'eloquent',
        'model' => App\Models\Admin::class,
    ],
],

Option 1: Custom Middleware (Recommended for Reusability) #

If you need this access logic across multiple controllers, creating a dedicated middleware is the cleanest, most maintainable approach:

1. Generate the middleware
   Run this Artisan command in your terminal:

   php artisan make:middleware AllowUserOrAdmin
   

2. Update the middleware logic
   Open app/Http/Middleware/AllowUserOrAdmin.php and replace the handle method with this:

   public function handle($request, Closure $next)
   {
       // Check if either a regular user or admin is authenticated
       if (auth('web')->check() || auth('admin')->check()) {
           return $next($request);
       }
   
       // Redirect unauthenticated users to your preferred login page
       return redirect()->route('login');
   }
   

3. Register the middleware
   Add this entry to the $routeMiddleware array in app/Http/Kernel.php:

   'allow.user.or.admin' => \App\Http\Middleware\AllowUserOrAdmin::class,
   

4. Use the middleware in your controller
   Replace your existing middleware call in the controller constructor:

   public function __construct()
   {
       $this->middleware('allow.user.or.admin');
   }
   

Option 2: Closure Middleware (Quick One-Off Solution) #

If you only need this access rule for a single controller, you can use an inline closure instead of creating a separate middleware file:

public function __construct()
{
    $this->middleware(function ($request, $next) {
        // Allow access if either guard has an authenticated user
        if (auth('web')->check() || auth('admin')->check()) {
            return $next($request);
        }

        return redirect()->route('login');
    });
}

Bonus: Differentiate Content in Blade (If Needed) #

If you want to show specific content to regular users vs admins while keeping the template accessible to both, add this to your Blade file:

@if(auth('web')->check())
    <div class="user-greeting">Welcome, regular user!</div>
@elseif(auth('admin')->check())
    <div class="admin-greeting">Welcome, admin! Here's your dashboard shortcut</div>
@endif

Key Notes #

• Make sure your login routes for both guards are properly set up (e.g., admin/login with a named route like admin.login if you want to redirect unauthenticated admins to their own login page).
• Use auth('guard-name')->user() if you need to access the authenticated user's details in your controller or Blade template.

内容的提问来源于stack exchange，提问作者Mosharof Hossain