>
> Ah, OK so what's happening is that _sa_instance_state hasn't yet been
> assigned to the User object during the unpickle process, then your __eq__()
> is trying to get at self.id which triggers the attribute system and
> requires a fully composed User object.
>
> Here you'd need to either have a different way of __eq__() functioning,
> which might mean maybe you look inside of obj.__dict__ for "id" first to
> work around this, or you wouldn't use a mutable attribute. The mutable
> system requires that it be able to hash the parent object in a weak key
> dictionary.
>
> There might be other workarounds possible, perhaps we'd modify
> InstanceState.__setstate__() to help here, but I'd have to think about it.
>
Well, I fixed it by modifying my code from this:
def _get_id(self):
return self.id
To this:
def _get_id(self):
if 'id' in self.__dict__:
return self.id
return id(self)
Although it feels kind of wrong to patch an entity class for certain
behavior of an attribute that it may have.
Thanks
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