prevent update of any object without providing the correct/current

[rails.git] / app / controllers / way_controller.rb

diff --git a/app/controllers/way_controller.rb b/app/controllers/way_controller.rb
index 3b6491cf0b3ceda5ed90ee7e1da5e49579c6af21..d3a1b039f557b2afc129f050106b5282db23b897 100644 (file)
--- a/app/controllers/way_controller.rb
+++ b/app/controllers/way_controller.rb
@@ -15,6 +15,7 @@ class WayController < ApplicationController
         if !way.preconditions_ok?
           render :text => "", :status => :precondition_failed
         else
+          way.version = 0
           way.user_id = @user.id
           way.save_with_history!
 
@@ -48,22 +49,20 @@ class WayController < ApplicationController
     begin
       way = Way.find(params[:id])
       new_way = Way.from_xml(request.raw_post)
+      if new_way.version != way.version
+        render :text => "Version mismatch: Provided " + new_way.version.to_s + ", server had: " + way.version.to_s, :status => :bad_request
+        return
+      end  
+        
 
       if new_way and new_way.id == way.id
-        if !new_way.preconditions_ok?
-          render :text => "", :status => :precondition_failed
-        else
-          way.user_id = @user.id
-          way.tags = new_way.tags
-          way.nds = new_way.nds
-          way.visible = true
-          way.save_with_history!
-
-          render :nothing => true
-        end
+        way.update_from(new_way, @user)
+        render :text => way.version.to_s, :content_type => "text/plain"
       else
         render :nothing => true, :status => :bad_request
       end
+    rescue OSM::APIPreconditionFailedError
+      render :text => "", :status => :precondition_failed
     rescue ActiveRecord::RecordNotFound
       render :nothing => true, :status => :not_found
     end