Django-dag is a small reusable app which implements a Directed Acyclic Graph.
Django-dag uses abstract base classes, to use it you must create your own
concrete classes that inherit from Django-dag classes.
The `dag_test` app contains a simple example and a unit test to show
you its usage.
class ConcreteNode(node_factory('ConcreteEdge')): """ Test node, adds just one field """ name = models.CharField(max_length = 32) class ConcreteEdge (edge_factory(ConcreteNode, concrete = False)): """ Test edge, adds just one field """ name = models.CharField(max_length = 32, blank = True, null = True)