使用pluginaweek的state

<我开始在我的机器上添加一个未挂起状态。尽管我从不想让某些东西停留在这种状态，但我无法动态地告诉state_machine我想取消暂停的状态。

我在挂起事件中添加了before_transition回调函数，在状态被挂起之前保存状态。

我为unsuspend事件添加了after_transition回调，因此状态立即更新为先前的状态，并且之前的状态然后消灭，以防止对象的生活中的问题。

这并不完美。它可以工作，但比创建挂起和取消挂起事件作为独立方法要复杂得多。我没有走这条路，因为我希望state_machine控制所有的状态变化，并且突破这一点就消除了防止移动到/来自无效状态，回调等的保护。

I'm trying to implement a "suspend" event that transitions the object to the :suspended state. But I need to be able to "unsuspend", and return to the previous state. I added a previous_state field to the model, but I can't see how to access it inside an event block.

This is the basic logic I'm trying to implement:

The state_machine docs haven't been very helpful, and I can't find examples online. Sometimes it's tough to know how to describe something to google :)

This isn't a perfect solution in my opinion, but I did figure out how to accomplish my task:

I started by adding an "unsuspended" state to my machine. While I never want something to stay in this state, I can't dynamically tell state_machine what state I want to unsuspend to.

I added a before_transition callback to the suspend event, to save the state before it is suspended.

I added an after_transition callback to the unsuspend event, so the state is immediately updated to the previous state, and that previous state is then wiped out to prevent issues later in the object's life.

This is not perfect. It works, but it's a lot more complicated than just creating the suspend and unsuspend events as standalone methods. I didn't go that route because I want state_machine controlling all state changes, and breaking out of that removes the protections against moving to/from invalid states, callbacks, etc.