lib/ancestry/instance_methods.rb
def touch_ancestors_callback
      if !ancestry_callbacks_disabled? && self.ancestry_base_class.touch_ancestors
        # Touch each of the old *and* new ancestors
        unscoped_current_and_previous_ancestors.each do |ancestor|
          ancestor.without_ancestry_callbacks do
            ancestor.touch
          end
        end
      end
    end
def touch_ancestors_callback
      if !ancestry_callbacks_disabled? && self.ancestry_base_class.touch_ancestors
        # Touch each of the old *and* new ancestors
        unscoped_current_and_previous_ancestors.each do |ancestor|
          ancestor.without_ancestry_callbacks do
            ancestor.touch
          end
        end
      end
    end
Touch each of this record's ancestors (after save)