+ def history
+ response.headers["Content-Type"] = 'application/xml'
+ segment = Segment.find(params[:id])
+
+ unless segment
+ render :nothing => true, :staus => 404
+ return
+ end
+
+ doc = XML::Document.new
+ doc.encoding = 'UTF-8'
+ root = XML::Node.new 'osm'
+ root['version'] = '0.4'
+ root['generator'] = 'OpenStreetMap server'
+ doc.root = root
+
+ segment.old_segments.each do |old_segment|
+ el1 = XML::Node.new 'segment'
+ el1['id'] = old_segment.id.to_s
+ el1['from'] = old_segment.node_a.to_s
+ el1['to'] = old_segment.node_b.to_s
+ Segment.split_tags(el1, old_segment.tags)
+ el1['visible'] = old_segment.visible.to_s
+ el1['timestamp'] = old_segment.timestamp.xmlschema
+ root << el1
+ end
+
+ render :text => doc.to_s
+ end
+