Use of laravel middleware

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Release： 2023-04-02 14:48:02

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This article mainly introduces the use of laravel middleware, which has certain reference value. Now I share it with everyone. Friends in need can refer to it

Usage of laravel middleware:

Create middleware command

php artisan make:middleware CheckLogin

Copy after login

After executing the above command, a new middleware class CheckLogin.php will be created in the app/Http/Middleware directory.

After creation, you still need to register the middleware in app/Http/Kernel.php:

 protected $routeMiddleware = [
        &#39;auth&#39; => \Illuminate\Auth\Middleware\Authenticate::class,
        &#39;auth.basic&#39; => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
        &#39;bindings&#39; => \Illuminate\Routing\Middleware\SubstituteBindings::class,
        &#39;can&#39; => \Illuminate\Auth\Middleware\Authorize::class,
        &#39;guest&#39; => \App\Http\Middleware\RedirectIfAuthenticated::class,
        &#39;throttle&#39; => \Illuminate\Routing\Middleware\ThrottleRequests::class,
        //这就是新注册的中间件
        &#39;checklogin&#39; => \App\Http\Middleware\CheckLogin::class,    ];

Copy after login

You can write verification in the newly created middleware as follows:

<?php
namespace App\Http\Middleware;
use Closure;
use Illuminate\Support\Facades\Session;
class CheckLogin{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        $userid = Session::get(&#39;_userid&#39;);        
        $login_sts = Session::get(&#39;_login_sts&#39;);        
        if (empty($userid) || empty($login_sts)){            
        return response()->view(&#39;admin/login&#39;);
        }        
        return $next($request);
    }
}

Copy after login

The next step is how to use the middleware function

Route::group([&#39;namespace&#39;=>&#39;Admin&#39;,&#39;middleware&#39;=>&#39;checklogin&#39;],function (){    
Route::get(&#39;admins&#39;,&#39;IndexController@index&#39;);    
Route::get(&#39;logout&#39;,&#39;IndexController@logout&#39;);});

Copy after login

The routing group is used directly here. As long as the routing is placed in the group, it will go through this verification. ['namespace'=>'Admin'] is Namespace, ['middleware'=>'checklogin'] This is middleware verification. The registration name was checklogin when registering before, so just write checklogin directly after middleware.

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