If you wanted to restrict all API access to only logged-in users (to your Django app), it would be as easy as this:

  from tastypie.authorization import DjangoAuthorization

and then in your 'Meta' class for each resource, you'd specify the following:

  authorization = DjangoAuthorization()

That's step one. To go further, and limit access to resources per user, so that they can only access the things they should have access to (according to Django permissions), you'd simply use 'apply_authorization_limits' to narrow the query object to what the user should have access to. So, if your default query looks like

  queryset = Resource.objects.all()

You could filter that down in your apply_authorization_limits method to something like this:

  def apply_authorization_limits(self, request, object_list):
    object_list.filter(user=request.user)