I was looking for an RDF project for django and I cant find any active.
This seems to be a good one http://code.google.com/p/django-rdf, but the last commit was in 2008,
From what little I've read of RDF you are probably going to have to do manual work to get meaningful RDF statements from Django models since it's not a simple data representation format like JSON, it is trying to encode semantic meaning.
That said, have a look at django-rdflib:
https://github.com/odeoncg/django-rdflib
There doesn't seem to be any documentation (and it seems to have been built for a specific app) but the author has posted here about a manage.py syncvb
command that generates an RDF graph from existing Django models:
https://groups.google.com/d/msg/django-rdf/14WVK7t88PE/ktAKJo-aCfUJ
Not sure exactly what views django-rdflib provides, but if it can make an RDFlib graph for you then you can probably use the serialization plugins provided by RDFlib to output rdf+xml or whatever from your own view.