i think it related with record representation
db.define_table('supplier',
Field('name', unique=True, requires=IS_NOT_EMPTY() ), format =
'%(name)s')
db.item.supplied_by.requires = IS_IN_DB(db, db.supplier.id, '%(name)s')
ref:
http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#Record-representation
http://web2py.com/books/default/chapter/29/07/forms-and-validators#Database-validators
best regards,
stifan
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