Question

这就是我所拥有的：

state_machine :state, :initial => :open do
    after_transition :on => :buy, :do => :send_buy_notification_email
    after_transition :on => :take, :do => :send_take_notification_email
    after_transition :on => :accept, :do => :send_accept_notification_email
    after_transition :on => :cancel, :do => :send_cancel_notification_email

现在我想在初始状态打开时触发：send_trade_notification_email。

我该怎么做？

干杯，

乔尔

Answer 1

由于状态转换类似于“通常的”AR回调，也许你的方法应该在after_create回调中触发？毕竟，你的过渡是从零到开放，这将在创建时发生：

 after_create :send_trade_notification_email

如果允许的话，将完成同样的事情：

 after_transition :on=>:create, :do=>:send_trade_notification_email

Answer 2

我找到了另一种方法

def initial_send_trade_notification_email
  send_trade_notification_email #do what you need on create
  :open # return initial state
end

state_machine initial: lambda(&:initial_send_trade_notification_email) do
  #...
end

rails state_machine：如何触发操作：初始状态？

2 个答案: