how to force Laravel to use https in URL and assets

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1<?php
2namespace App\Providers;
3use Illuminate\Support\ServiceProvider;
4use Illuminate\Routing\UrlGenerator;
5class AppServiceProvider extends ServiceProvider
6{
7     /**
8      * Bootstrap any application services.
9      *
10      * @return void
11      */
12      public function boot(UrlGenerator $url)
13      {
14              if (env('APP_ENV') !== 'local') {
15                    $url->forceScheme('https');
16              }
17       }
18      /**
19       * Register any application services.
20       *
21       * @return void
22       */
23       public function register()
24       {
25              //
26       }
27}