I have a MapperExtension which defines one method, instrument class.
This method in turn pokes in a number of convenience methods such as
lookup, search and a custom __str__ and __repr__. We do this dynamic
instrumentation to avoid having to inherit from a common base class.
mapper(ModelPresentValue, model_present_value, extension=banana)
The problem is with an UPDATE that attempts to set the PK values to
NULL (see error text below. Note the bind values [None, None, 32,
100]).
When I remove the extension, everything works fine. I intend to debug
this further during the course of the day but wanted to see if anyone
might be able to see straight off what the problem is (my thought is
that I am simply not implementing enough of the extension hooks)
regards,
pjjH
sqlalchemy.exc.IntegrityError: (IntegrityError) ('23000', "[23000]
[FreeTDS][SQL Server]Cannot insert the value NULL into column 'md5id',
table 'sa_test.dbo.model_present_value'; column does not allow nulls.
UPDATE fails. (515)") u'UPDATE model_present_value SET md5id=?,
scenario=? WHERE model_present_value.md5id = ? AND
model_present_value.scenario = ?' [None, None, 32, 100]
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