如何获取django中updateview的url参数?

`path('my-domains/<str:domain_name>/dns-settings', login_required(DNSSettingsUpdateView.as_view()), name='dns_settings')`

我想让str:domain_name在我的更新视图中使用:

class DNSSettingsUpdateView(UpdateView):
    model = Domain
    form_class = NsRecordModelForm
    template_name = "engine/dns_settings.html"

    def get_object(self, queryset=None):
        return Domain.objects.get(name=[would insert it here])

    def get_success_url(self):
        return reverse("my-domains")

我该怎么做?有人能帮忙吗?提前谢谢