RouteServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Routing\Router;
use Illuminate\Foundation\Support\Providers\RouteServiceProvider as ServiceProvider;

class RouteServiceProvider extends ServiceProvider
{

	protected $namespace = 'App\Http\Controllers';

	public function boot(Router $router)
	{
		parent::boot($router);
	}

	public function map(Router $router)
	{
		// Each route subdomain of the application has its own routes file, and its own sub-Namespace,
		// as well as its own list of middleware.
		// To allow for setting different domains for testing, the domains come from `.env` via a config file.
		$router->group(['namespace' => $this->namespace], function ($router) {
			$this->register_domain($router, 'Activate',   config('domains.activate'),   ['cors', 'api']);
			$this->register_domain($router, 'Client',     config('domains.client'),     ['web', 'auth']);
			$this->register_domain($router, 'Login',      config('domains.login'),      ['cors', 'api']);
			$this->register_domain($router, 'Newsletter', config('domains.newsletter'), ['web']);
		});
	}

	protected function register_domain(Router $router, $namespace, $domain, $middleware)
	{
		$lcNamespace = snake_case($namespace);
		$router->group([
			'namespace' => $namespace,
			'domain' => $domain,
			'as' => "{$lcNamespace}::",
			'middleware' => $middleware,
		], function () use ($lcNamespace) {
			require app_path("Http/routes/{$lcNamespace}.php");
		});
	}
}