Chris@909: class AddMissingIndexesToAttachments < ActiveRecord::Migration
Chris@909:   def self.up
Chris@909:     add_index :attachments, [:container_id, :container_type]
Chris@909:     add_index :attachments, :author_id
Chris@909:   end
Chris@909: 
Chris@909:   def self.down
Chris@909:     remove_index :attachments, :column => [:container_id, :container_type]
Chris@909:     remove_index :attachments, :author_id
Chris@909:   end
Chris@909: end