class OldNodeController < ApplicationController def history response.headers["Content-Type"] = 'application/xml' node = Node.find(params[:id]) unless node render :nothing => true, :staus => 404 return end doc = OSM::API.new.get_xml_doc node.old_nodes.each do |old_node| doc.root << old_node.to_xml_node end render :text => doc.to_s end end