Hi list, Could anybody tell me what's wrong with the following code? It's only the code in the poly_assoc example directory (the generic version) where I'm trying to set the polymorphic part of the relationship. It gets me the traceback below and I don't really understand why:
Traceback (most recent call last):
File "poly_assoc_3.py", line 155, in <module>
sess.save(u2)
File "/home/ged/devel/sqlalchemy/trunk/lib/sqlalchemy/util.py", line
1550, in func_with_warning
return func(*args, **kwargs)
File "/home/ged/devel/sqlalchemy/trunk/lib/sqlalchemy/orm/session.py",
line 1055, in save
self._cascade_save_or_update(state, entity_name)
File "/home/ged/devel/sqlalchemy/trunk/lib/sqlalchemy/orm/session.py",
line 1111, in _cascade_save_or_update
self._save_or_update_impl(state)
File "/home/ged/devel/sqlalchemy/trunk/lib/sqlalchemy/orm/session.py",
line 1251, in _save_or_update_impl
self._update_impl(state)
File "/home/ged/devel/sqlalchemy/trunk/lib/sqlalchemy/orm/session.py",
line 1241, in _update_impl
"session." % (mapperutil.state_str(state), state.key))
sqlalchemy.exc.InvalidRequestError: Could not update instance
'[EMAIL PROTECTED]', identity key (<class
'__main__.GenericAssoc'>, (1,), None); a different instance with the
same identity key already exists in this session.
--
Gaëtan de Menten
http://openhex.org
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poly_assoc_3.py
Description: application/python
