自定义参数文件错误

由于Sensio Insight的限制，我试图将参数从app/config/parameters.yml移动到应用程序捆绑包，但仍在获取

您请求了一个不存在的参数"truckee_volunteer.sandbox"

这是因为app/config/config.yml包含（以及来自捆绑包的parameters.yml的其他引用）

imports:
    - { resource: parameters.yml }
    - { resource: @TruckeeVolunteerBundle/Resources/config/parameters.yml }
    ...
    twig:
        ...
        globals:
            sandbox: "%truckee_volunteer.sandbox%"

此尝试基于此SO答案

扩展类

class TruckeeVolunteerExtension extends Extension
{
    /**
     * {@inheritDoc}
     */
    public function load(array $configs, ContainerBuilder $container)
    {
        /* for Sensio Insight
        $configuration = new Configuration();
        $config = $this->processConfiguration($configuration, $configs);
        */
        $loader = new Loader'XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
        $loader->load('services.xml');
        $loader = new Loader'YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
        $loader->load('parameters.yml');
    }
    public function getAlias()
    {
        return 'truckee_volunteer';
    }

配置类

class Configuration implements ConfigurationInterface
{
    /**
     * {@inheritDoc}
     */
    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder();
        $rootNode = $treeBuilder->root('truckee_volunteer');
        $rootNode
            ->children()
                ->scalarNode('admin_user')
                    ->defaultValue('admin')
                    ->isRequired()
                    ->cannotBeEmpty()
                ->end()
                ->scalarNode('admin_password')
                    ->isRequired()
                    ->cannotBeEmpty()
                ->end()
                ->arrayNode('admin_email')
                    ->children()
                        ->scalarNode('address')->isRequired()->cannotBeEmpty()
                    ->end()
                ->end()
                ->scalarNode('admin_first_name')
                    ->isRequired()
                    ->cannotBeEmpty()
                ->end()
                ->scalarNode('admin_last_name')
                    ->isRequired()
                    ->cannotBeEmpty()
                ->end()
                ->booleanNode('sandbox')
                    ->defaultFalse()
                    ->isRequired()
                    ->cannotBeEmpty()
                ->end()
            ->end()
        ;
        // Here you should define the parameters that are allowed to
        // configure your bundle. See the documentation linked above for
        // more information on that topic.
        return $treeBuilder;
    }
}

Bundle的参数.yml

truckee_volunteer:
    admin_user: admin
    admin_password: 123Abcd
    admin_email: 
        address: admin@example.com
    admin_first_name: Benny
    admin_last_name: Borko
    sandbox: false