just to clear out doubts..... a field 'reference sometable' gets: - a foreign key to the id of sometable - a validator that by default builds up on the format argument of sometable
you CAN'T have a foreign key to a table and have the requires parameter with is_in_db() building a string value. So, if you want the 'origin' field to store the integer that is a pointer to the countries.id table, while retaining the country_name while representing it in the dropdown, you should do db.define_table('countries', Field('country_name'), format='%(country_name)s' ) db.define_table('testing', Field('origin','reference countries') ) or db.define_table('countries', Field('country_name'), ) db.define_table('testing', Field('origin','reference countries',requires=IS_IN_DB( db,'countries.id', '%(country_name)s',error_message='Choose origin country' )) ) if you want testing.origin to be a string holding country names (so, not a reference), with the dropdown showing the countries you have in the countries table db.define_table('countries', Field('country_name'), ) db.define_table('testing', Field('origin',requires=IS_IN_DB( db,'countries.country_name',error_message='Choose origin country')) ) tl;dr your "mix and match" doesn't specify what you want. Field type "trumps" the requires parameter on a database level. On Thursday, March 21, 2013 9:02:20 PM UTC+1, Cliff Kachinske wrote: > > The syntax may be correct per the manual, but IS_IN_DB tells Postgres to > create a foreign key constraint on the field. If you look at the tables > with psql or pgadmin you will see this is so. > > A foreign key constraint is always on the primary key of the foreign > table. It has to be this way to guarantee uniqueness. > > This will work: > > countries = [r.countryname for r in > db(somequery).select(db.countries.countryname)] > > db.testing.origin.requires = IS_IN_SET(countries) > > > > On Thursday, March 21, 2013 3:36:51 PM UTC-4, Alan Etkin wrote: >> >> > there is no string validator, i just use IS_IN_DB to create drop down >> widget >> >> Yes, sorry, I checked the api and it seems you are using the correct >> syntax. >> >> Does it work using IS_IN_DB (db, db.countries.country_name) instead? >> > -- --- 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.