X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/0b6d9ce877a08cb762b5d9354847187c6b43e216..9acc6d32883435ab9734cd4970b292583075a75d:/app/models/way.rb

diff --git a/app/models/way.rb b/app/models/way.rb
index 2b6f562be..52d280209 100644
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -89,7 +89,7 @@ class Way < ActiveRecord::Base
     return doc
   end
 
-  def to_xml_node(visible_nodes = nil, user_display_name_cache = nil)
+  def to_xml_node(visible_nodes = nil, changeset_cache = {}, user_display_name_cache = {})
     el1 = XML::Node.new 'way'
     el1['id'] = self.id.to_s
     el1['visible'] = self.visible.to_s
@@ -97,19 +97,25 @@ class Way < ActiveRecord::Base
     el1['version'] = self.version.to_s
     el1['changeset'] = self.changeset_id.to_s
 
-    user_display_name_cache = {} if user_display_name_cache.nil?
+    if changeset_cache.key?(self.changeset_id)
+      # use the cache if available
+    else
+      changeset_cache[self.changeset_id] = self.changeset.user_id
+    end
+
+    user_id = changeset_cache[self.changeset_id]
 
-    if user_display_name_cache and user_display_name_cache.key?(self.changeset.user_id)
+    if user_display_name_cache.key?(user_id)
       # use the cache if available
     elsif self.changeset.user.data_public?
-      user_display_name_cache[self.changeset.user_id] = self.changeset.user.display_name
+      user_display_name_cache[user_id] = self.changeset.user.display_name
     else
-      user_display_name_cache[self.changeset.user_id] = nil
+      user_display_name_cache[user_id] = nil
     end
 
-    if not user_display_name_cache[self.changeset.user_id].nil?
-      el1['user'] = user_display_name_cache[self.changeset.user_id]
-      el1['uid'] = self.changeset.user_id.to_s
+    if not user_display_name_cache[user_id].nil?
+      el1['user'] = user_display_name_cache[user_id]
+      el1['uid'] = user_id.to_s
     end
 
     # make sure nodes are output in sequence_id order