It sounds like the PropertyFolder implementation might want to do something like:
class PropertyFolder(...): def __call__(...): ...
# alias to be sure we always control our rendering index_html = __call__
This would result in never being able to call the index_html in the ZODB.
--kyler
Sure you could :) You just have to do it explicitly: def __call__(self, REQUEST, ...): if i_want_to_call_acquired_index_html: # acquire it from our parent, to avoid getting our own! index_html = getattr(self.aq_parent, 'index_html', None) if index_html is not None: return index_html(self, REQUEST) ... index_html = __call__ Brian Lloyd brian@zope.com V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com