def METHOD_NAME(self):
    qs = self.model.objects.approved().filter(product=self.kwargs["product_pk"])
    # pylint: disable=attribute-defined-outside-init
    self.form = SortReviewsForm(self.request.GET)
    if self.request.GET and self.form.is_valid():
        sort_by = self.form.cleaned_data["sort_by"]
        if sort_by == SortReviewsForm.SORT_BY_RECENCY:
            return qs.order_by("-date_created")
    return qs.order_by("-score")