# This migration comes from mailboxer_engine (originally 20110719110700) class AddNotifiedObject < ActiveRecord::Migration def self.up change_table :notifications do |t| t.references :notified_object, :polymorphic => true t.remove :object_id t.remove :object_type end end def self.down change_table :notifications do |t| t.remove :notified_object_id t.remove :notified_object_type t.references :object, :polymorphic => true end end end