Refactor generation of object metadata in API calls

[rails.git] / lib / object_metadata.rb

diff --git a/lib/object_metadata.rb b/lib/object_metadata.rb
new file mode 100644 (file)
index 0000000..d4d0bcf
--- /dev/null
+++ b/lib/object_metadata.rb
@@ -0,0 +1,30 @@
+module ObjectMetadata
+  def add_metadata_to_xml_node(el, osm, changeset_cache, user_display_name_cache)
+    el['changeset'] = osm.changeset_id.to_s
+    el['redacted'] = osm.redaction.id.to_s if osm.redacted?
+    el['timestamp'] = osm.timestamp.xmlschema
+    el['version'] = osm.version.to_s
+    el['visible'] = osm.visible.to_s
+
+    if changeset_cache.key?(osm.changeset_id)
+      # use the cache if available
+    else
+      changeset_cache[osm.changeset_id] = osm.changeset.user_id
+    end
+
+    user_id = changeset_cache[osm.changeset_id]
+
+    if user_display_name_cache.key?(user_id)
+      # use the cache if available
+    elsif osm.changeset.user.data_public?
+      user_display_name_cache[user_id] = osm.changeset.user.display_name
+    else
+      user_display_name_cache[user_id] = nil
+    end
+
+    unless user_display_name_cache[user_id].nil?
+      el['user'] = user_display_name_cache[user_id]
+      el['uid'] = user_id.to_s
+    end
+  end
+end