lib/active_model/global_identification.rb
require 'active_model/global_id' require 'active_model/signed_global_id' module ActiveModel module GlobalIdentification extend ActiveSupport::Concern def global_id @global_id ||= GlobalID.create(self) end alias gid global_id def signed_global_id @signed_global_id ||= SignedGlobalID.create(self) end alias sgid signed_global_id end end