Rails: How to have no response until an event triggers

问题

I don't know if Rails has a way to do as following:

1. Receive a request
2. Put the request into the monitor list until an event triggers
3. Finish the request but does not return any response to the client (no HTTP response), the trigger will do the response later after processing.

I found some info about delayed_job, but it returns the response immediately and puts the job to the background which does not seem to be event-driven.

Anyone can help?

Andy.

回答1:

I think you are talking about callbacks. Read here: API. Note that you can create custom events and callbacks too: blog

回答2:

You're probably looking for Notifications, Observers, and/or COMET

来源：https://stackoverflow.com/questions/6972393/rails-how-to-have-no-response-until-an-event-triggers