Use of laravel middleware

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

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

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);
    }
}

The next step is how to use the middleware function

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

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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