chill-bundles/docs/source/development/user-interface/widgets/ChillPersonExtension.php

<?php

/**
 * Chill is a software for social workers
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Chill\PersonBundle\DependencyInjection;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;
use Symfony\Component\HttpKernel\DependencyInjection\Extension;

/**
 * This is the class that loads and manages your bundle configuration.
 *
 * To learn more see {@link http://symfony.com/doc/current/cookbook/bundles/extension.html}
 */
class ChillPersonExtension extends Extension implements PrependExtensionInterface
{
    public function load(array $configs, ContainerBuilder $container)
    {
        // ...
    }

    /**
     * Add a widget "add a person" on the homepage, automatically.
     *
     * @param \Chill\PersonBundle\DependencyInjection\containerBuilder $container
     */
    public function prepend(ContainerBuilder $container)
    {
        $container->prependExtensionConfig('chill_main', [
            'widgets' => [
                'homepage' => [
                    [
                        'widget_alias' => 'add_person',
                        'order' => 2,
                    ],
                ],
            ],
        ]);
    }
}