On Oct 4, 2009, at 7:54 PM, Y3s wrote:
> Session = orm.sessionmaker(autocommit=True, autoflush=False)
you're using non-default session settings, all attributes are expired
upon transaction commit which in this case due to autocommit makes the
object unreachable within the flush, so set expire_on_commit=False
along with your autocommit=True.
> e = create_engine("sqlite:///")
> m.bind = e
> Session.configure(bind=e)
> m.create_all()
>
> # Insert objects...
> s = Session()
> for x in range(1, 6):
> t = T()
> t.id = x
> t.description = "Object %s" % x
> s.add(t)
> s.flush()
>
> # ...now try to change the ID of one of them...
> o = s.query(T).get(2)
> o.id = 10
> o.description = "Changed"
> s.flush()
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