internetee-registry/db/migrate/20160304125933_add_invoice_number_to_directo.rb

class AddInvoiceNumberToDirecto < ActiveRecord::Migration
  def change
    add_column :directos, :invoice_number, :string
    execute "UPDATE directos d SET invoice_number=i.number FROM invoices i WHERE d.item_type='Invoice' AND d.item_id=i.id"
  end
end