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 [email protected].
For more options, visit https://groups.google.com/groups/opt_out.
