Dirksen writes:
Thank you, Toby Dickenson and Dieter Maurer, for your tips on my problem. It's cracked instantly! However, as a layman of python and Zope, I couldn't figure out the meaning of "MyObj(name).__of__(self)". What is '__of__' funtion? I can dig very little information about '__of__' from python's website. What's the difference between 'Acquisition.Implicit' and 'Acquisition.Explicit'? And why these two steps are required to solve my problem? Look forward to your enlightenment. Suggested reading:
* the Zope Developer Guide (--> zope.org) * the Acquisition documentation in your Zope distribution: lib/Components/ExtensionClass/doc/Acquisition.html * URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html Dieter