In the controller: db.trip_instance.trip_type.default=<computed value>
mic 2011/9/7 Ray (a.k.a. Iceberg) <[email protected]>: > 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
