Also you would have to requires the Field('ticket',...,unique=True) because this method it not thread safe and you should be prepared that inserts may fail.
On Tuesday, 10 November 2015 11:42:40 UTC-6, Niphlod wrote: > > if you want to have a number that strictly: > > - is incremental (no gaps, always sequential, etc) > - the first two digits are the year > > I'd suggest to have a "last_tickets" table (year(int) , > ticket_no(int)) > > holding the current ticket. > > then, you can use _before_insert callback on the "tickets" table to: > > - fetch the last ticket_no for the current year > - compute the next integer, update last ticket_no > - use the computed value in the ticket_no of the "tickets" table > > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- 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 web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.