How do I have unique field combinations in DAL?
So only one of each of these 2-tuples should be allowed:
db.define_table('foo',
Field('bar_id', db.bar, requires=IS_IN_DB(db, 'bar.id')),
Field('user_id', db.auth_user, default=auth.user_id, writable=False,
requires=IS_IN_DB(db, 'auth_user.id')),
)
Thanks for all suggestions,
Alec Taylor
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