example of usage

[gfunch]

Hi,
I am trying to use django-river to track and control the flow of objects in my application.

In particular, I have objects representing document that will pass from the author to a reviewer and then on to a production team, ideally based on a view controlled by a button press. I was intending to have an owner field that could be changed to indicate who currently 'has' the document.

At this point, I can see how I can change state, but not how this state change can influence fields on the model instance.

Can someone please give me a short example of how this might work?

Thank you!