Ruby on rails 使用两个状态机的拆分ActiveRecord模型

我有一个模型使用两个

其中，

xxx

/

yyy

可以是

MyModel

实例或包装类中的方法。我不知道

问题是：做这件事的最佳方法是什么？

简短回答：将状态机作为一个模块进行分解

更长的版本：你可以看看，海报回答了同样的问题

希望这有帮助

class MyModel < ActiveRecord::Base

  state_machine :call_state, :initial => :pending do
    event :start do
      transition :pending => :started
    end

    event :restart do
      transition :started => :pending
    end

    event :finish do
      transition :started => :finished
    end
  end

  state_machine :payment_state, :initial => :unpaid  do
    event :pay do
      transition :unpaid => :paid
    end

    event :pay_back do
      transition :paid => :paid_back
    end

    event :reject_payment do
      transition :unpaid => :rejected
    end
  end

  #tons of methods related with call_state
  #tons of methods related with payment_state
end

def can_call?
  xxx.paid? and yyy.can_start?
end