Parent
ActiveRecord::Migration<%= migration_version %> def self.up Indonesia.provinces.each do |p| Province.create(code: p[:id], name: p[:name]) end Indonesia.regencies.each do |r| Regency.create(code: r[:id], name: r[:name], province_code: r[:province_id]) end Indonesia.districts.each do |d| District.create(code: d[:id], name: d[:name], regency_code: d[:regency_id]) end end def self.down Province.destroy_all Regency.destroy_all District.destroy_all end end