def get(self, request): c = request.GET.get('code') if not c: raise Http404('Sorry, this unsubscribe link is not valid.') sub = Subscription.for_unsubscribe_code(c) if sub is None: raise Http404('Unknown unsubscribe code.') sub.unsubscribed = True sub.save() return HttpResponse('Unsubscribed! You will no longer receive these ' \ 'emails from us.')