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The old API defined a unique field as follows:
_sql_constraints = [
('cne_unique', 'unique(cne)', 'cne already exists!')
The new API deprecates this, and recommends to use @api.constrains, but how can I code to check for uniqueness in an efficient way?
this is _constraints which is deprecated (python constraint), not _sql_constraints, see :
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|Asked: 3/29/15, 3:11 PM|
|Seen: 1449 times|
|Last updated: 4/14/16, 3:24 AM|