Laurence Rowe wrote:
Hermann Himmelbauer wrote:
Am Montag, 2. Juni 2008 20:04 schrieb Hermann Himmelbauer:
Hi,
In my zope3 tests, I set up some basic test data. After that, I'm
calling
transaction.commit(). However, I get the following traceback:
--------------- snip -------------------
File "copy_reg.py", line 69, in _reduce_ex
raise TypeError, "can't pickle %s objects" % base.__name__
TypeError: can't pickle module objects
------------------ snip -------------------
I found it by myself: I registered a zope.sqlalchemy related utility,
which stores an engine (self.engine = create_engine(DSN,...)) and a
scoped session (self.Session = scoped_session(sessionmaker...)). These
two objects cannot be serialized, hence the above problem.
Now I'm unsure what to do about this problem - is there any code
available that demonstrates how to register SA engines/Sessions as
utilities?
The simplest solution is to register the Session object as a global
utility.
Though that would be quite unnecessary too ;-). If you are ok with one
global scoped session for your app, then just use `from mymodule import
Session; session = Session()`.
Laurence
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