Update annotate and annotate models

app/models/user_archived_message.rb

@@ -2,3 +2,18 @@ class UserArchivedMessage < ActiveRecord::Base
   belongs_to :user
   belongs_to :topic
 end
+
+# == Schema Information
+#
+# Table name: user_archived_messages
+#
+#  id         :integer          not null, primary key
+#  user_id    :integer          not null
+#  topic_id   :integer          not null
+#  created_at :datetime
+#  updated_at :datetime
+#
+# Indexes
+#
+#  index_user_archived_messages_on_user_id_and_topic_id  (user_id,topic_id) UNIQUE
+#