lib/scrivito/basic_widget.rb in scrivito_sdk-1.3.0.rc2 vs lib/scrivito/basic_widget.rb in scrivito_sdk-1.3.0.rc3

@@ -6,9 +6,10 @@
 # is stored in its attributes.
 # @see http://scrivito.com/page-with-widgets Creating a page type with widgets
 # @api public
 class BasicWidget
   extend AttributeContent::ClassMethods
+  extend ::ActiveSupport::DescendantsTracker
   include AttributeContent
 
   def self.type_computer
     @_type_computer ||= TypeComputer.new(Scrivito::BasicWidget, ::Widget)
   end