On Sep 7, 3:00 am, Lennon <[email protected]> wrote: > I'm try to use a lambda to set a default value based on a value in > another table. Here is my model: > > db.define_table('trip_instance', timestamp, sos_table, > Field('trip_type_id', db.trip_type, label='Trip Type', > widget=trip_select_widget, requires = IS_IN_DB(db, 'trip_type.id', '% > (name)s'), represent=lambda id:db.trip_type(id)['name']), > Field('total_slots', 'integer', default=lambda r: > db.trip_type(r.trip_type_id)['total_slots']), > > Locally this causes an error that says: > > TypeError: <lambda>() takes exactly 1 argument (0 given) > > And on my server (Linode) there is no error but when I try and create > a new trip instance with sqlform the total slots field is pre- > populated with this: > > <function <lambda> at 0x7f27684b7140> > > My lambda looks almost identical to the one that works fine for > represent in the trip_type_id field except I'm using the table instead > of the field. Is that what I'm doing wrong?
Looks like the default parameter does not want a lambda. Try to give it a computed value instead. Regards, Ray
