Ruby AASM(充当状态机):处理支付:将前回调与保护相结合

Payment

class Payment
  include AASM

  aasm do

    state :created
    state :paid
    state :refunded

    event :pay do

      transitions from :created, to :paid

    end

  end

end

payment.pay

created 到 paid

before :pay

attr_accessor 说明付款是否成功。

aasm