[Zope] Creating a ZClass instance as a method of another ZClass?

[Tres Seaver]

On Fri, 10 Dec 1999 14:38:27 -0500 (EST), Jeff K. Hoffman wrote:
> 
> On Fri, 10 Dec 1999, Phillip J. Eby wrote:
> 
> > At 12:11 PM 12/10/99 -0500, Jeff K. Hoffman wrote:
> >
> > >With the cursor sitting on this line in the debugger, I tried:
> > >
> > >  pdb> p folder[id]
> > >  <BClass instance at ...>
> > >  pdb> s # this executes the getattr(folder, id) line
> > >  AttributeError: 'binstance'
> > >
> > >It is obvious that my instance has been created, and installed into the
> > >methods instance via _setObject(), so I am baffled as to why folder[id]
> > >works but getattr(folder, id) does not.
> > >
> > >Can anyone shed any light on this, for me? Am I trying to do something
> > >that's outside the capabilities of ZClasses, or have I just missed
> > >something obvious?
> >
> > Currently, ZClass instances can only be added to objects which store them
> > in a way accessible with getattr.  And evidently, ZClasses themselves do
> > not do that, so you can't add a ZClass instance to a ZClass.
> 
> Ok. Just wanted to make sure I wasn't doing something taboo.
> 
> > This is a bug in the ZClass instance logic, and I know Michel Pelletier
> > knows about it (at least, another place where it shows up), but I don't
> > know if it has been reported to the collector or a fix is actively in
> > the works.
> 
> I found the following, which was posted back in July:
> 
>   http://classic.zope.org:8080/Collector/386/view
> 
> It seems it was fixed, but apparently it has been broken again. I will
> submit it to the collector in the form of my previous message.
> 
> > I may take a look at this and see if I can submit a patch to speed the fix
> > process, as putting ZClass instances into ZClasses is something which will
> > be very important to me in the near future.
> 
> Keep us posted on how things go. I will see what I can do, on this end,
> too. But, since I am still learning, you'll probably be able to fix it
> much faster than I. :)

I'm puzzled -- I can add ZClass instances from one of my products to ZClass
instances from another of my products through the management interface just
fine, on both 2.01 and 2.1.  I can't believe that there is any functionality
possible through the management interface which can't also be had through
Python.

Tres.
-- 
=========================================================
Tres Seaver         tseaver@palladion.com    713-523-6582
Palladion Software  http://www.palladion.com