docs/components/controller.md in graphql_rails-0.3.3 vs docs/components/controller.md in graphql_rails-0.4.0

@@ -78,11 +78,11 @@
 
 By default return type is determined by controller name. When you want to return some custom object, you can specify that with `returns` method:
 
 ```ruby
 class UsersController < GraphqlRails::Controller
-  action(:last_order).permit(:id).returns(Order)
+  action(:last_order).permit(:id).returns('Order!') # Order is your model class name
 
   def last_order
     user = User.find(params[:id]).orders.last
   end
 end
@@ -116,9 +116,51 @@
 
   private
 
   def require_auth_token # will run before `UsersController#create` action
     raise 'Not authenticated' unless User.where(token: params[:token]).exist?
+  end
+end
+```
+
+## *after_action*
+
+You can add `after_action` to run some filters after calling your controller action. Here is an example:
+
+```ruby
+class UsersController < GraphqlRails::Controller
+  after_action :clear_cache
+
+  def create
+    User.create(params)
+  end
+
+  private
+
+  def clear_cache # will run after `UsersController#create` action
+    logger.log('Create action is completed')
+  end
+end
+```
+
+## *around_action*
+
+You can add `around_action` to run some filters before and after calling your controller action. Here is an example:
+
+```ruby
+class UsersController < GraphqlRails::Controller
+  around_action :use_custom_locale
+
+  def create
+    User.create(params)
+  end
+
+  private
+
+  def with_custom_locale
+    I18n.with_locale('it') do
+      yield # yield is mandatory
+    end
   end
 end
 ```
 
 ### *only* and *except* option