I am trying to use the method posted by
http://stackoverflow.com/questions/8054665/multi-column-unique-constraint-with-web2py
db.define_table('ts_customer',
Field('customer_name', 'string', length=80, required=True,
unique=True))
db.define_table('ts_mileage_rate',
Field('customer_id', 'reference ts_customer',
required=True, notnull=True),
Field('mileage_rate_year', 'integer', required=True,
notnull=True,
requires=IS_NOT_IN_DB(
db(db.ts_mileage_rate.customer_id ==
request.vars.customer_id),
'ts_mileage_rate.mileage_rate_year')
))
I get the following error:
type 'exceptions.AttributeError'> 'DAL' object has no attribute
'ts_mileage_rate'
Any idea why?
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