[Zope3-Users] Re: Question about "ForbiddenAttribute"...

[Thierry FLORAC]

On Tue, 2006-06-13 at 08:28 +0200, Philipp von Weitershausen wrote:
> As said above, 'result' will be security proxied. Security proxies for
> lists only allow methods that don't change the lists. result.sort()
> would change it. Hence it's forbidden.
> 
> An easy workaround is to use sorted():
> 
>   result = IGalleryFolder(self.context).getImages()
>   return sorted(result, cmp=...)
> 
> Note that using 'cmp' is very slow. It's much faster to use 'key':
> 
>   result = IGalleryFolder(self.context).getImages()
>   return sorted(result, key=lambda x: IGalleryPhoto(x).name)

Tried this, but it doesn't work because of another ForbiddenAttribute
error :

  File ".../gallery/browser/folder.py", line 39, in getImages
    return sorted(result, key=lambda x: IGalleryPhoto(x).name)
  File ".../gallery/browser/folder.py", line 39, in <lambda>
    return sorted(result, key=lambda x: IGalleryPhoto(x).name)
ForbiddenAttribute: ('name', <gallery.photo.GalleryPhoto object at
0xa5bc46ac>)

As said before, 'IGalleryPhoto' (implemented by GalleryPhoto) is
provided in the "allowed_interface" attribute of my ZCML's view page
definition...

Thierry



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