simplify grabbing of a xml base doc

app/controllers/api_controller.rb

@@ -40,7 +40,7 @@ class ApiController < ApplicationController
     # get missing nodes if there are any
     nodes += Node.find(missing_nodes) if missing_nodes.length > 0
 
-    doc = get_xml_doc
+    doc = OSM::API.get_xml_doc
 
     # get ways
     # find which ways are needed

app/controllers/application.rb

@@ -38,16 +38,6 @@ class ApplicationController < ActionController::Base
     end 
   end 
 
-  def get_xml_doc
-    doc = XML::Document.new
-    doc.encoding = 'UTF-8' 
-    root = XML::Node.new 'osm'
-    root['version'] = API_VERSION
-    root['generator'] = 'OpenStreetMap server'
-    doc.root = root
-    return doc
-  end
-
   # extract authorisation credentials from headers, returns user = nil if none
   private 
   def get_auth_data 

app/controllers/old_node_controller.rb

@@ -9,7 +9,7 @@ class OldNodeController < ApplicationController
       return
     end
 
-    doc = get_xml_doc
+    doc = OSM::API.new.get_xml_doc
 
     node.old_nodes.each do |old_node|
       doc.root << old_node.to_xml_node

app/controllers/old_segment_controller.rb

@@ -9,7 +9,7 @@ class OldSegmentController < ApplicationController
       return
     end
 
-    doc = get_xml_doc
+    doc = OSM::API.new.get_xml_doc
 
     segment.old_segments.each do |old_segment|
       doc.root << old_segment.to_xml_node
@@ -17,9 +17,4 @@ class OldSegmentController < ApplicationController
 
     render :text => doc.to_s
   end
-
-
-
-
-
 end

app/controllers/segment_controller.rb

@@ -85,7 +85,7 @@ class SegmentController < ApplicationController
     ids = params['segments'].split(',').collect {|s| s.to_i }
     if ids.length > 0
       segmentlist = Segment.find(ids)
-      doc = get_xml_doc
+      doc = OSM::API.get_xml_doc
       segmentlist.each do |segment|
         doc.root << segment.to_xml_node
       end 

app/controllers/user_controller.rb

@@ -1,7 +1,7 @@
 class UserController < ApplicationController
   layout 'site'
 
-  before_filter :authorize, :only => :preferences
+  before_filter :authorize, :only => [:preferences, :api_details]
   before_filter :authorize_web, :only => [:rename, :account, :go_public]
   before_filter :require_user, :only => [:rename, :account, :go_public]
  
@@ -125,5 +125,9 @@ class UserController < ApplicationController
       render :status => 400, :nothing => true
     end
   end
+
+  def api_details
+    render :text => @user.to_xml.to_s
+  end
 end
 

app/controllers/way_controller.rb

@@ -90,7 +90,7 @@ class WayController < ApplicationController
     ids = params['ways'].split(',').collect {|w| w.to_i }
     if ids.length > 0
       waylist = Way.find(ids)
-      doc = get_xml_doc
+      doc = OSM::API.new.get_xml_doc
       waylist.each do |way|
         doc.root << way.to_xml_node
       end