Controller.php

<?php

namespace App\Controllers\Site\Ads;

use Silex\Application;
use Symfony\Component\HttpFoundation\Request;
use Silex\Api\ControllerProviderInterface;

class AdsControllerProvider implements ControllerProviderInterface {


	public function connect(Application $app) {

		// creates a new controller based on the default route
		$controller = $app['controllers_factory'];

			# list adversements
			$controller->get('/{type}/{page}/', '\App\Controllers\Site\Ads\Ads::list')
			->convert('page', function($page){

				if ($page === '0') {
					$page = '1';
				}

				return $page;

			})
			->assert('page', '\d+'); // only digit

			$controller->get('/{type}/', function($type) use ($app) {
				return $app->redirect(SITE_URL.'anuncios/'.$type.'/1/', 302);
			});


			# load a post
			$controller->get('/{type}/v/{code}/', '\App\Controllers\Site\Ads\Ads::load')
			->convert('code', function($code, $app){

				if (empty($code)) {
					return $app->redirect(SITE_URL.'anuncios/'.$type.'/1/', 302);
				}

				return $code;

			})
			->assert('code', '([a-zA-Z0-9]){6,6}'); // only not digit


		return $controller;
	}


}