-----Original Message----- From: Darran Edmundson <Darran.Edmundson@anu.edu.au> To: zope@zope.org <zope@zope.org> Date: Tuesday, September 14, 1999 4:59 AM Subject: [Zope] Initialization of properties in a ZClass instance?
The problem is that /Products/NewsItemProduct/NewsItemClass/propertysheets/common/NewsItemPrope rties will not allow me to add a "date" property of type date and leave it blank. Ideally, I would like this property to default (ie. automatically initialize) to the current datetime. How does one achieve this? (My guess is that I give it a dummy value in the class definition and then set it in the constructor method?).
Your guess is exactly what I do.
This raises the question: does every object instance have a creation datetime even though it doesn't explicitly appear on the Properties tab, and if so, is this value available in a DTML method.
This has been talked about earlier on the list. I believe the answer from the DC guys was that the object creation time is not stored in the ZODB (only the last modification time).
On an unrelated note, how can I make each instance of NewsItem's index_html method autmatically visible in the Contents tab and available for editing?
If index_html is a method of the ZClass, it cannot be overridden at the instance level. My method for doing this is to create a DTML method in the ZClass called "default_index_html". Then, the constructor copies the contents of this to a new DTML method inside the instance (that one is called just "index_html"). For convenience sake, I also made a tab for restoring the defaults... This is stuff in the KM|Net News package http://www.zope.org:18200/Members/tazzzzz/kmnn Kevin