[Zope] Object as subobject

[Jochen Haeberle]

Hi,

At 19:14 Uhr +0800 12.02.2000, Sin Hang Kin wrote:
>I am making a web with bibliographic catalogues. I have the person objects
>which is referred by the bibliographic objects in various places : author,
>editor, subject etc. I have made a zclass for person which simply have their
>name, title, birth, etc. I intent to place them all in a folder say :
>authors
>
>I wish to implement the bibliographic record as zclass, but I do not known
>how to let refer to the person object in this zclass.
>
>
>Rgs
>Kent Sin

I am struggling with the same problem, coming from a relational
background... This screams for some sort of easy relation, but I
don't know how to express that in OO. I talked about the subject with
a friend of mine who's programmer, but has no knowledge of python or
Zope.
He said it might be the easiest way to relate the objects with a
procedural aspect. So do not use the Objects to relate but build a
little method that does it. Your book instance could basically know
what authors were involved writing it, you could get the IDs out of
the book-instance and further on work with the correpsonding author
instances.

I am still on my (early) way to learning python and Zope so I am most
interested if there's a better way to express this

I am trying this on Cocktails and ingriedients and the contained
amount. After I have build up a sum of cocktails I would like to know
what cocktails could I do with the bottles I have around - this is a
question easily handled by a RDBMS, but how OO?

Jochen