Chris@909: class AddMissingIndexesToMessages < ActiveRecord::Migration
Chris@909:   def self.up
Chris@909:     add_index :messages, :last_reply_id
Chris@909:     add_index :messages, :author_id
Chris@909:   end
Chris@909: 
Chris@909:   def self.down
Chris@909:     remove_index :messages, :last_reply_id
Chris@909:     remove_index :messages, :author_id
Chris@909:   end
Chris@909: end