# User and UserDecorator is an example with ActiveModel and Draper class User extend ActiveModel::Naming attr_accessor :status def self.status_options %w[ approved rejected ] end end class UserDecorator < Draper::Decorator decorates :user humanizes :status end class CustomUserDecorator < Draper::Decorator decorates :user humanizes :status def self.default_humanize(value) value.to_s.upcase end end