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