admin.py

    exclude = ("creator",)

    def save_model(self, request, obj, form, change):
        obj.creator = request.user
        obj.save()

    # }}}

    def revoke_exam_tickets(self, request, queryset):  # noqa
        queryset \
                .filter(state=exam_ticket_states.valid) \
                .update(state=exam_ticket_states.revoked)

    revoke_exam_tickets.short_description = _("Revoke Exam Tickets")  # type: ignore

    actions = [revoke_exam_tickets]


admin.site.register(ExamTicket, ExamTicketAdmin)

# }}}

# vim: foldmethod=marker