The use of Laravel middleware

This article mainly introduces the use of Laravel middleware, has a certain reference value, and now share to everyone, the need for friends can refer to

Use of Laravel middleware:

Create middleware commands

PHP Artisan Make:middleware Checklogin

Executing the above command will create a new middleware class checklogin.php under the App/http/middleware directory.

After creation, you also 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,        //This is the newly registered middleware        ' checklogin ' and \app\http\middleware\checklogin::class,    ];

You can write validation in the middleware you just created as follows:

<?phpnamespace 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 (' _userid ');                $login _sts = session::get (' _login_sts ');                if (Empty ($userid) | | empty ($login _sts)) {                    return response ()->view (' Admin/login ');        }                Return $next ($request);}    }

And then how to use the middleware function

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

The direct use of the routing group here, as long as the route is placed in the group will pass this verification, [' namespace ' + ' Admin '] is a namespace, [' middleware ' = ' checklogin '] This is the middleware validation, Before registering the registered name is Checklogin, so middleware directly after the Checklogin can be written.

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