app/concerns/sortable_events.rb

@@ -151,4 +151,26 @@ module SortableEvents

                       orders
              

                     ).collect!(&:last)
              

                   end
              

                +
              

                +  # The emulation of Module#prepend provided by lib/prepend.rb does
              

                +  # not work for methods defined after a call of prepend.
              

                +  if Module.method(:prepend).source_location
              

                +    module ClassMethods
              

                +      def can_order_created_events!
              

                +        raise if cannot_create_events?
              

                +        @can_order_created_events = true
              

                +      end
              

                +
              

                +      def can_order_created_events?
              

                +        !!@can_order_created_events
              

                +      end
              

                +    end
              

                +
              

                +    def initialize(*args)
              

                +      if self.class.instance_variable_get(:@can_order_created_events)
              

                +        self.class.__send__ :prepend, SortableEvents::AutomaticSorter
              

                +      end
              

                +      super
              

                +    end
              

                +  end
              

                 end