db/migrate/20111104114634_add_polymorphic_to_phone_number.rb


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class AddPolymorphicToPhoneNumber < ActiveRecord::Migration
  def change
    add_column :phone_numbers, :phone_numberable_type, :string
    add_column :phone_numbers, :phone_numberable_id, :integer

    remove_column :phone_numbers, :phone_book_entry_id
  end
end