Alexandre CONRAD wrote:
> Don't forget to answer my question: "What are the benefits of
> instantiating a Session object ?". Actually, I just feel better working
> *with* a instantiated object.
Hey, I just set my code to instantiate the session, and I get the
following error when I delete a client (which has a bunch of cascading
"all, delete-orphan" rules).
session = Session()
NB: I've mapped the session.delete function to my "model" object for
convenience: model.delete = session.delete
File '<string>', line 1 in <lambda>
File '/var/www/html/dev/tlv/mp/mp/lib/base.py', line 71 in wrapper
return check(func, *args, **kwargs)
File '/var/www/html/dev/tlv/mp/mp/lib/base.py', line 68 in check
return func(*args, **kwargs)
File '/var/www/html/dev/tlv/mp/mp/controllers/clients.py', line 89 in delete
model.delete(client)
File
'/usr/lib/python2.4/site-packages/SQLAlchemy-0.4.0dev_r3224-py2.4.egg/sqlalchemy/orm/session.py',
line 621 in delete
self.uow.register_deleted(c)
File
'/usr/lib/python2.4/site-packages/SQLAlchemy-0.4.0dev_r3224-py2.4.egg/sqlalchemy/orm/unitofwork.py',
line 156 in register_deleted
self._validate_obj(obj)
File
'/usr/lib/python2.4/site-packages/SQLAlchemy-0.4.0dev_r3224-py2.4.egg/sqlalchemy/orm/unitofwork.py',
line 121 in _validate_obj
raise exceptions.InvalidRequestError("Instance '%s' is not attached
or pending within this session" % repr(obj))
InvalidRequestError: Instance '<mp.model.clients.Client object at
0x18fd9d0>' is not attached or pending within this session
I changed my code back to normal non-instantiated session:
session = Session
And it works fine.
Regards,
Alex
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