Your code seem ok, maybe traceback could help... Or you can look at the line poited by the traceback... Maybe you forgot "db." somewhere in front of ts_mileage_rate
Can't say from you code, because it seems ok there. I thought it was caused by the IS_NOT_IN_DB at first but I don't think so. Good luck. Richard On Wed, Jul 24, 2013 at 5:03 PM, <msar...@gmail.com> wrote: > I am trying to use the method posted by > http://stackoverflow.com/questions/8054665/multi-column-unique-constraint-with-web2py > > db.define_table('ts_customer', > Field('customer_name', 'string', length=80, required=True, > unique=True)) > > db.define_table('ts_mileage_rate', > Field('customer_id', 'reference ts_customer', > required=True, notnull=True), > Field('mileage_rate_year', 'integer', required=True, > notnull=True, > requires=IS_NOT_IN_DB( > db(db.ts_mileage_rate.customer_id == > request.vars.customer_id), > 'ts_mileage_rate.mileage_rate_year') > )) > > I get the following error: > > type 'exceptions.AttributeError'> 'DAL' object has no attribute > 'ts_mileage_rate' > > Any idea why? > > -- > > --- > 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/groups/opt_out. > > > -- --- 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/groups/opt_out.