Middleware

Middleware provide a convenient mechanism for filtering HTTP requests entering your application. For example, Laravel includes a middleware that verifies the user of your application is authenticated. If the user is not authenticated, the middleware will redirect the user to the login screen.

Whenever there is request by a user then request has to go first on the middleware and when middleware authorized that request then it will go to the backend.

Defining Middleware

cd DirectoryName
php artisan make:middleware MiddlewareName

after creating middleware

<?php

namespace App\Http\Middleware;

use Closure;

class test
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        $ip = $request->ip();
        if($ip == '127.0.0.1'){
            throw new \Exception("your IP is correct");            
            //return redirect('/');
        }
        return $next($request);
    }
}

Assigning Middleware To Routes:

Route::get('about', function () {
    return view('about');
})->middleware('test');

Registering Middleware

If you want a middleware to run during every HTTP request to your application, you should first assign the middleware a key in your app/Http/Kernel.php file.

protected $routeMiddleware = [    
    'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
    'test' => \App\Http\Middleware\test::class,
];

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