Its easier to do in 0.7 where you just say event.listen(MyObject.attribute,
"append", fn), any time you want. Though we haven't implemented "remove"
yet. I'd wait for the 0.7 betas if possible. Otherwise you can append your
AttributeExtension into the listeners collection on the attribute, I'd have to
check the source of attributes.py to recall the exact name of the collection.
On Feb 7, 2011, at 4:25 AM, sandro dentella wrote:
> Hi,
>
>
> is there a way to attach an attribute extension of an existing
> property of an (existing) mapper?
> I made some tests [1] and it seems that attaching the AttrExt to a
> mapper does not work:
>
> mapper.get_property('name').extension = MyAttrExt()
>
> Is there a way apart from setting it while creating the property?
>
>
> thanks in advance
> sandro
> *:-)
>
> [1] http://dpaste.com/hold/394115/
>
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