results = signals.on_cas_collect_histories.send(sender=validate, for_email=ticket.user.email)
histories = '\n'.join('\n'.join(rs) for rc, rs in results)
results = signals.on_cas_collect_histories.send(sender=validate, for_email=ticket.user.email)
histories = '\n'.join('\n'.join(rs) for rc, rs in results)