Ruby on Rails rename columns in bulk

rails_bulk_rename_columns.rb

class RenameOldOrderAddressRelatedColumn < ActiveRecord::Migration
  def up
    change_table(:orders, :bulk => true) do |t|
      t.rename :order_status_code_id, :state
      t.remove :in_process
      [:first_name,
       :last_name,
       :country,
       :state].each do |column|
        t.rename "shipping_#{column}", "origin_shipping_#{column}"
      end
    end
  end
end
# generate:
#=> ALTER TABLE `orders` DROP `in_process`, CHANGE `shipping_first_name` `origin_shipping_first_name` varchar(50) DEFAULT NULL, CHANGE `shipping_last_name` `origin_shipping_last_name` varchar(50) DEFAULT NULL, CHANGE `shipping_country` `origin_shipping_country` varchar(255) DEFAULT NULL, CHANGE `shipping_state` `origin_shipping_state` varchar(255) DEFAULT NULL...