How to get an user name on twig template ? {{ content.contentInfo.contentType.creatorId|user_name }}

AcmeExtension.php

<?php

namespace Acme\DemoBundle\Twig;

use Symfony\Component\DependencyInjection\ContainerInterface;

class AcmeExtension extends \Twig_Extension
{
    private $container;

    public function __construct( ContainerInterface $container )
    {
        $this->container = $container;
    }
    public function getFilters()
    {
        return array(
            'user_name' => new \Twig_Filter_Method($this, 'userNameFilter'),
        );
    }

    public function userNameFilter($userId = 10)
    {
        $userService = $this->container->get('ezpublish.api.repository')->getUserService();
        $user = $userService->loadUser( $userId );
        
        return $user->content->contentInfo->name;
    }

    public function getName()
    {
        return 'Acme';
    }
}

?>

services.yml

services:
    Acme.twig_extension:
        class: %acme.twig_extension.class%
        arguments: [@service_container]
        tags:
            - { name: twig.extension }

@dspe : Did you know that your gist can have multiple files ? 😉

oh yeah ;)