db/migrate/20091017214406_add_missing_indexes_to_attachments.rb

   1 class AddMissingIndexesToAttachments < ActiveRecord::Migration
   2   def self.up
   3     add_index :attachments, [:container_id, :container_type]
   4     add_index :attachments, :author_id
   5   end
   6
   7   def self.down
   8     remove_index :attachments, :column => [:container_id, :container_type]
   9     remove_index :attachments, :author_id
  10   end
  11 end