LangAndTimeZoneView.py

class SetTimeZoneView(LoginRequiredMixin, View):
    def post(self, *args, **kwargs):
        Users.objects.filter(id=self.request.user.id).update(
            timezone=self.request.POST["timezone"]
        )
        messages.success(self.request, 'Timezone was successfully changed')
        return HttpResponseRedirect(self.request.META.get("HTTP_REFERER"))


class SetLanguageView(LoginRequiredMixin, View):
    def post(self, *args, **kwargs):
        Users.objects.filter(id=self.request.user.id).update(
            language=self.request.POST["language"]
        )
        from django.utils.translation import activate
        activate(self.request.POST["language"])
        messages.success(self.request, 'Language was successfully changed')
        return HttpResponseRedirect(self.request.META.get("HTTP_REFERER"))