At 01:01 PM 11/7/00 +0200, Roch'e Compaan wrote:

I created a couple of ZClasses based on Dataskin.

In the way I grok ZOPE, properties that are objects can not go onto property sheets. So if I have a Customer ZClass that has a property Address (a property that is an object) then I would create the address object as a "method" of the Customer that makes references like Customer.Address.Street possible.

The way Ty and I usually handle "object" properties is to give an object setter methods (e.g. "setAddress()") that simply set the property (e.g. self.Address = addr). The only downside is that you have to do this in a Python base class or an External method. Later, we expect to replace this approach with PropertyHandlers, and we already have a primitive form of PropertyHandler we have used with some success, but it's too crude at this point for a product release.

To achieve this without ZPatterns I would base my ZClass on a objectmanager so that I can create an instance of an Address object within Customer. So how does one do this with ZPatterns. In one posting I picked up that one does not have much joy with ZPatterns and the ObjectManger base class?

I have created ObjectManager and Folder dataskins before and had them work, but at the time I was testing with Zope 2.1.6, and it was an older version of ZPatterns. I haven't done much lately with them. If people are experiencing problems, perhaps someone could send me a bug report?