module ActiveModel module StateMachine class State attr_reader :name, :options def initialize(name, options = {}) @name = name machine = options.delete(:machine) if machine machine.klass.send(:define_method, "#{name}?") do current_state.to_s == name.to_s end end update(options) end def ==(state) if state.is_a? Symbol name == state else name == state.name end end def call_action(action, record) action = @options[action] case action when Symbol, String record.send(action) when Proc action.call(record) end end def display_name @display_name ||= name.to_s.gsub(/_/, ' ').capitalize end def for_select [display_name, name.to_s] end def update(options = {}) if options.key?(:display) then @display_name = options.delete(:display) end @options = options self end end end end