Is anyone aware of a Django app for designing and storing flowcharts in a database? After searching for variations of "Django flowcharts", I've only found flowcharts of Django's internal design, not anything about authoring or storing flowcharts in a Django webapp.
As asked in a similar question, I've found several impressive Javascript and JQuery based libraries for browser-based flowchart design, but nothing for persisting these server-side.
I wrote an app that stores and controls state machines in Django 1.2:
https://bitbucket.org/canassa/zinaflow
It uses a per-object permission model for controlling the transitions and GenericForeignKeys for attaching the state machine to any model in your application. With the per-object permissions you can assign a Django user for each transition.
Depending on what you need to do, this app might be a overkill for you. But reading the source code can give you some ideias on how to implement an app yourself.