django ajax class based mixins

mixins.py

class AjaxListMixin:
    def get(self, request, *args, **kwargs):
        self.object_list = self.get_queryset()
        if request.is_ajax():
            data = serializers.serialize("json", self.object_list)
            return JsonResponse(data, safe=False)
        context = self.get_context_data()
        return self.render_to_response(context)


class AjaxFormMixin:
    def form_valid(self, form):
        form.save()
        if self.request.is_ajax():
            data = serializers.serialize("json", [form.instance])
            return JsonResponse(data, safe=False, status=200)
        return super().form_valid(form)

    def form_invalid(self, form):
        if self.request.is_ajax():
            return JsonResponse(form.errors, safe=False, status=400)
        return super().form_invalid(form)