i've already define it, and forgot to paste in this email : db._common_fields.append(auth.signature)
i've already input via database administration to make the date and time for check_in.created_on is not on the same day with check_out.created_on but the result for duration field is always return 0:00:00. any idea why this happen? thank you so much in advance -- --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.

