views.py

    def get_default_success_url(self) -> str:
        pk = self.object.groups.first().pk
        return reverse("assigned_group_roles", args=[pk])

    def get(self, request, *args, **kwargs):
        self.object = self.get_object()
        if not self.object.date_end:
            self.object.date_end = timezone.now().date()
            self.object.save()
            messages.success(request, _("The group role assignment has been stopped."))
        return redirect(self.get_success_url())


@method_decorator(never_cache, "dispatch")
class GroupRoleAssignmentDeleteView(
    PermissionRequiredMixin, RevisionMixin, SuccessNextMixin, AdvancedDeleteView
):
    """Delete view for group role assignments."""

    model = GroupRoleAssignment
    permission_required = "alsijil.delete_grouproleassignment"
    template_name = "core/pages/delete.html"
    success_message = _("The group role assignment has been deleted.")

    def get_default_success_url(self) -> str:
        pk = self.object.groups.first().pk
        return reverse("assigned_group_roles", args=[pk])