Symfony 2 config参数 - 必须定义参数

Question

我有一个名为Web\CoworkerBundle的Bundle.在DIC/Configuration.php中我有:

$rootNode = $treeBuilder->root('web_coworker');
$rootNode
    ->children()
        ->scalarNode('redirect_url')->defaultNull()->end()
    ->end();

在config.yml我有:

web_coworker:
    redirect_url: "http://www.example.com/"

现在在我的DefaultController.php中,我这样做

return array(
    'url' => $this->container->getParameter('redirect_url')
);

我收到了错误

必须定义参数"redirect_url".

我错过了什么吗？

Answer 1

您需要在捆绑中创建扩展名(Acme/DemoBundle/DependencyInjection)

class AcmeDemoBundleExtension extends Extension
{
    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');
        // MOST IMPORTANT LINE
        $container->setParameter('web_coworker.params', $config);
    }
}

现在关于控制器你可以删除你返回的东西,应该做的伎俩:)