app/controllers/old_relation_controller.rb

   1 class OldRelationController < OldController
   2   private
   3
   4   def lookup_old_element
   5     @old_element = OldRelation.find([params[:id], params[:version]])
   6   end
   7
   8   def lookup_old_element_versions
   9     @elements = OldRelation.where(:relation_id => params[:id]).order(:version)
  10   end
  11 end