I saw a previously closed ticket 7506 for a related (no pun intended) problem. It seems like when we use select_related suddenly the queryset can't be pickled. This used to work back in May sometime. Currently using SVN 7944.
The models is attached.
# This works
ld = LeagueDivision.objects.all()
cache.set('test2', ld)
# This doesn't work
ld = LeagueDivision.objects.select_related('league_conference').all()
cache.set('test2', ld)
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "C:\Python25\lib\site-packages\django\core\cache\backends
\memcached.py", line 35, in set
self._cache.set(smart_str(key), value, timeout or
self.default_timeout)
File "C:\Projects\pyapps\memcache.py", line 437, in set
return self._set("set", key, val, time, min_compress_len)
File "C:\Projects\pyapps\memcache.py", line 609, in _set
store_info = self._val_to_store_info(val, min_compress_len, key)
File "C:\Projects\pyapps\memcache.py", line 581, in
_val_to_store_info
pickler.dump(val)
File "C:\Python25\lib\copy_reg.py", line 71, in _reduce_ex
raise TypeError?, "can't pickle %s objects" % base.name
TypeError?: can't pickle function objects
The dev environment is Windows, Python 2.5.1 using runserver built in web server with memcache (also on Windows) and Postgres 8.2 on Windows.
- Ed
