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class UserCreateView(CreateView):
    model = User

    def dispatch(self, request, *args, **kwargs):
        self.platform = get_object_or_404(Platform, pk=self.kwargs.get("platform_id"))
        return super(UserCreateView, self).dispatch(request, *args, **kwargs)

    def get_initial(self):
        return {
            "platform_version": self.platform.current_version,
        }

    def get_form(self, form_class):
        form = super(UserCreateView, self).get_form(form_class)
        form.fields["platform_version"].widget = forms.fields.HiddenInput()
        form.fields["nodes"].widget = forms.CheckboxSelectMultiple()
        return form

    def get_context_data(self, **kwargs):
        context = super(UserCreateView, self).get_context_data(**kwargs)
        context["platform"] = self.platform
        return context

    def get_success_url(self):
        return reverse("user:list_user", kwargs={"platform_id": self.object.platform_version.platform.id})