Chris@909: class AddWatchersUserIdTypeIndex < ActiveRecord::Migration
Chris@909:   def self.up
Chris@909:     add_index :watchers, [:user_id, :watchable_type], :name => :watchers_user_id_type
Chris@909:   end
Chris@909: 
Chris@909:   def self.down
Chris@909:     remove_index :watchers, :name => :watchers_user_id_type
Chris@909:   end
Chris@909: end