URLs with variable number of parameters

There are many cases when you need to get variable number of parameters via URL. For example one may want URLs such as http://example.com/products/cars/sport to lead to ProductController::actionCategory where it's expected to get an array containing cars and sport.

Get Ready

First of all, we need to enable pretty URLs. In the application config file add the following:

$config = [
    // ...
    'components' => [
        // ...
        'urlManager' => [
            'showScriptName' => false,
            'enablePrettyUrl' => true,
            'rules' => require 'urls.php',

Note that we're including separate file instead of listing rules directly. It is helpful when application grows large.

Now in config/urls.php add the following content:

return [
        'pattern' => 'products/<categories:.*>',
        'route' => 'product/category',
        'encodeParams' => false,

Create ProductController:

namespace app\controllers;

use yii\web\Controller;

class ProductController extends Controller
    public function actionCategory($categories)
        $params = explode('/', $categories);

That's it. Now you can try http://example.com/products/cars/sport. What you'll get is

Array ( [0] => cars [1] => sport)