On May 4, 2006, at 5:16 PM, Jachin Rupe wrote:
hi there
I have another "zope theory" question. I am working on designing a
application in zope. I've been looking at a lot of examples and I
am wondering how people are implementing different types of
relationships between different persistent objects.
Depends on the relationship.
For instance I am going to be doing a lot with addresses.
Naturally it would be nice to have persistent Address class. Then
I would say that a Person has an Address and a Company has an Address.
My two different ideas are as follows:
1. Make Person and and Company containers that can each contain an
Address. I don't really like this idea because it seems like
container objects are for things like folders. This could be the
best way though and I'm just not zoppie enough yet.
2. Add an Object for the Address to the schema for IPerson and
ICompany (assuming I only need one address) or a List / Dict (if I
want more than one address for each person or company). I like
this idea better but I have yet to see any examples where someone
does that which is making me a little nervous. Among other things
I'd like to be able to see what happens when "addform"s and
"editform"s get generated for things like this or at least be
assured that's the way it is supposed to work.
This should work, and it seems like the right way to model this
particular kind of relationship.
If you were to want to reuse address objects for multiple people then
you might need some different choices (of which there are many
approaches and implementations).
Gary
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