[Zope] Using a ZCLass property as TALES expression ?

[Gilles Lenfant]

Hi,

I'm actually building a ZClass for which some validation rules may be
customized object per object.
I think that using a TALES expression for that purpose may be a good idea,
but I can't find a way to execute a TALES expression in the context of the
current object, and get the result.

Any idea ?

Thanks in advance.

--Gilles