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docs/source/development/routing.md

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+# Routing
+
+Our goal is to ease the installation of the different bundles. Users should not have to dive into complicated config files to install bundles.
+
+## A routing loader is available for all bundles
+
+A Chill bundle may rely on the Routing Loader defined in ChillMain.
+
+The loader will load `yml` or `xml` files. You simply have to add them into `chill_main` config
+
+```yaml
+   chill_main:
+   # ... other stuff here
+      routing:
+         resources:
+            - @ChillMyBundle/Resources/config/routing.yml
+```
+
+### Load routes automatically
+
+But this forces users to modify config files. To avoid this, you may prepend config implementing the `PrependExtensionInterface` in the `YourBundleExtension` class. This is an example from **chill main** bundle :
+
+```php
+   namespace Chill\MainBundle\DependencyInjection;
+
+   use Symfony\Component\DependencyInjection\ContainerBuilder;
+   use Symfony\Component\HttpKernel\DependencyInjection\Extension;
+   use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;
+
+   class ChillMainExtension extends Extension implements PrependExtensionInterface
+   {
+
+       public function load(array $configs, ContainerBuilder $container)
+       {
+           // ...
+       }
+
+       public function prepend(ContainerBuilder $container)
+       {
+
+           //add current route to chill main
+           //this is where the resource is added automatically in the config
+           $container->prependExtensionConfig('chill_main', array(
+              'routing' => array(
+                 'resources' => array(
+                    '@ChillMainBundle/Resources/config/routing.yml'
+                 )
+
+              )
+           ));
+       }
+   }
+```