That works great, thank you Thierry
Thierry Florac wrote:
Le mardi 15 janvier 2008 à 07:05 -0500, john saponara a écrit :
I add a Limoservice object, then inside that object add a Car; then I
add a Driver (which contains a Car), and the AddForm offers a dropdown
with '(no value)' and my Car object. If I select the car from the
dropdown I get an error:
UnpickleableError: Cannot pickle <type 'zope.security._proxy._Proxy'>
objects
Whereas if I leave the dropdown at '(no value)', the error does not
occur. What am I doing wrong? (See attached error.txt for full error.)
Hi,
As explained into error message, you can't store security proxied
objects into ZODB : you have to remove proxy before they can be stored.
What I generally do is just something like this :
...
from zope.security.proxy import removeSecurityProxy
class Driver(Contained):
implements(IDriver,ILimoserviceContained)
_car = None
def _getCar(self):
return self._car
def _setCar(self, value):
self._car = removeSecurityProxy(value)
car = property(_getCar,_setCar)
...
Like that, any way the car property is modified, it's automatically
unproxied and can be stored safely.
Thierry Florac
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