IrsteaFileUploadExtension.php

<?php

namespace Irstea\FileUploadBundle\DependencyInjection;

use Symfony\Component\Config\FileLocator;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;
use Symfony\Component\DependencyInjection\Loader;
use Symfony\Component\HttpKernel\DependencyInjection\Extension;

class IrsteaFileUploadExtension 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.yml');
    }

    /**
     * {@inheritdoc}
     */
    public function prepend(ContainerBuilder $container)
    {
        $container->prependExtensionConfig(
            'assetic',
            [
                'assets' => [
                    'form_js' => [
                        'inputs'  => [
                            'https://raw.githubusercontent.com/blueimp/jQuery-File-Upload/9.9.2/js/jquery.fileupload.js',
                            '@IrsteaFileUploadBundle/Resources/js/widget/file_upload.js'
                        ],
                    ],
                ],
            ]
        );

        $container->prependExtensionConfig(
            'twig',
            [
                'form' => [
                    'resources' => [
                        'IrsteaFileUploadBundle:Form:file_upload.html.twig',
                    ],
                ],
            ]
        );
    }
}