gistfile1.txt

class TokenAuthentication(BaseAuthentication):
    model = djangorestframework.tokenauth.models.Token

    def authenticate(self, request):
        key = request.META.get('HTTP_AUTHORIZATION', '').strip()
        if not key:
            return None

        try:
             token = self.model.objects.get(key=key)
        except:
             return None

        if token.user.is_active and not token.revoked:
            return (token.user, token)