Thanks, it works great, but only for pickle protocol 2:
slight modification: cls.get instead of cls.getByID
class MySqlObject(SQLObject):
def __getstate__(self):
return self.id
def __setstate__(self,id):
pass
def __new__(cls, *args, **kw):
if len(args) == 1:
return cls.get(args[0])
return SQLObject.__new__(cls, *args, **kw)
def __getnewargs__(self):
return (self.id,)
basic test:
>>> import cPickle
>>> a=Users.get(1)
>>> b=cPickle.dumps(a,2)
>>> c=cPickle.loads(b)
>>> c
<Users 1 login='asdf' password='qwerqwer' email="'[EMAIL PROTECTED]'"
validated=True validationString='0sdr8z6kfj'>
>>> a is c
True
>>> a == c
True
>>> id(a)
-1222564404
>>> id(c)
-1222564404
>>>
Luke Opperman wrote:
>I don't recall whether getstate/setstate are necessary - i think so, just for
>the protocol. the key is overriding new/getnewargs. i also don't recall how
>generally applicable this is, regarding different connection schemes etc.
>
> ## Pickle protocol hacks
>
> def __new__(cls, *args, **kw):
> if len(args) == 1:
> return cls.getByID(args[0])
> return SQLObject.__new__(cls, *args, **kw)
>
> def __getnewargs__(self):
> return (self.id,)
>
> def __getstate__(self):
> return self.id
>
> def __setstate__(self, state):
> ''' handled by __new__/__getnewargs__ '''
> pass
>
> ## End pickle protocol hacks
>
>
>
>
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