chill-bundles/DependencyInjection/ChillTaskExtension.php

<?php

namespace Chill\TaskBundle\DependencyInjection;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\Config\FileLocator;
use Symfony\Component\HttpKernel\DependencyInjection\Extension;
use Symfony\Component\DependencyInjection\Loader;
use Chill\TaskBundle\Security\Authorization\TaskVoter;
use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;

/**
 * This is the class that loads and manages your bundle configuration.
 *
 * @link http://symfony.com/doc/current/cookbook/bundles/extension.html
 */
class ChillTaskExtension extends Extension implements PrependExtensionInterface
{
    /**
     * {@inheritdoc}
     */
    public function load(array $configs, ContainerBuilder $container)
    {
        $configuration = new Configuration();
        $config = $this->processConfiguration($configuration, $configs);

        $loader = new Loader\YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
        $loader->load('services/controller.yml');
        $loader->load('services/security.yml');
        $loader->load('services/repositories.yml');
    }

    public function prepend(ContainerBuilder $container)
    {
        $this->prependAuthorization($container);
    }
    
    public function prependAuthorization(ContainerBuilder $container)
    {
        $container->prependExtensionConfig('security', array(
           'role_hierarchy' => array(
               TaskVoter::UPDATE => [TaskVoter::SHOW],
               TaskVoter::CREATE => [TaskVoter::SHOW]
           )
        ));
    }

}