I figured this one out, I had tried to create a attribute synonym by
doing this:
class alaID(Base):
""" Grouped products """
__tablename__ = "al_ids"
__table_args__ = {'schema':'review', 'useexisting':True}
[...]
generated_name = column_property(select(["master_name"], al_id ==
literal_column("al_id"), generated_names_t))
name = generated_name
[...]
This apparently causes some confusion for the mapper when commiting
data, but it works fine for reading....
I guess I should use synonym() instead?
-- Joakim
On 23 Juni, 10:37, Joakim <[email protected]> wrote:
> I have started to get this error on some machines I deploy my
> application to, but not on my own machine. As far as I can see it is
> running the same verison of SQLAlchemy (0.5.8) and MySQLdb (1.2.2), so
> I have a hard time understanding the issue. Any Ideas on what could be
> causing it?
>
> Traceback (most recent call last):
> [...]
> session.commit()
> File "/home/joakim/as/lib/python2.6/site-packages/SQLAlchemy-0.5.8-
> py2.6.egg/sqlalchemy/orm/session.py", line 671, in commit
> self.transaction.commit()
> File "/home/joakim/as/lib/python2.6/site-packages/SQLAlchemy-0.5.8-
> py2.6.egg/sqlalchemy/orm/session.py", line 388, in commit
> self._remove_snapshot()
> File "/home/joakim/as/lib/python2.6/site-packages/SQLAlchemy-0.5.8-
> py2.6.egg/sqlalchemy/orm/session.py", line 309, in _remove_snapshot
> _expire_state(s, None, instance_dict=self.session.identity_map)
> File "/home/joakim/as/lib/python2.6/site-packages/SQLAlchemy-0.5.8-
> py2.6.egg/sqlalchemy/orm/state.py", line 233, in expire_attributes
> not impl.dont_expire_missing or \
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