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docs/source/development/useful-snippets.md

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+# Useful snippets
+
+###### Dependency Injection
+
+## Configure route automatically
+
+Add the route for the current bundle automatically on the main app.
+
+```php
+    namespace Chill\MyBundle\DependencyInjection;
+
+    use Symfony\Component\DependencyInjection\ContainerBuilder;
+    use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;
+
+    class ChillMyExtension extends Extension implements PrependExtensionInterface
+    {
+        // ...
+
+        public function prepend(ContainerBuilder $container)
+        {
+            $this->prependRoutes($container);
+
+        }
+
+        public function prependRoutes(ContainerBuilder $container)
+        {
+            //add routes for custom bundle
+             $container->prependExtensionConfig('chill_main', array(
+               'routing' => array(
+                  'resources' => array(
+                     '@ChillMyBundle/Resources/config/routing.yml'
+                  )
+               )
+            ));
+        }
+```
+
+###### Security
+
+## Get the circles a user can reach
+
+```php
+   use Symfony\Component\Security\Core\Role\Role;
+
+   $authorizationHelper = $this->get('chill.main.security.authorization.helper');
+   $circles = $authorizationHelper
+       ->getReachableCircles(
+             $this->getUser(), # from a controller
+             new Role('CHILL_ROLE'),
+             $center
+       );
+```
+
+###### Controller
+
+## Secured controller for person
+
+   [controller](useful-snippets/controller-secured-for-person.php)