[Zope-CMF] dynamic list of content-types for the zope ZMI

[Oliver Bleutgen]

Hi,

I'm trying to find my way through the API for CMF filesystem products.
Bjorn Stabell pointed out to me how to use portal_types + portal_skins 
to get a fixed product with changeable "templates".

What I want to do is to write a product which can be added through the 
ZMI (not the CMF GUI) and where the user can select which template
it will use (through selecting the portal_type).

The problem is now that I can't know beforehand which different 
portal_types will be based on an object of that meta_type, and I'd like 
to dynamically gather that list at the moment the user wants to add an 
instance.

AFAIK, CMF-products use CMFCore.utils.manage_addContentForm(), which 
knows about the content_types lastly from utils.ContentInit(...),
done in the products __init__.py, where content_types = 
(tuple_of_objects,) is passed.

Is there a way to stay within the framework (i.e. still use 
utils.manage_addContentForm) and get the addForm to show the 
content_types dynamically? Using ComputedAttribute perhaps?


cheers,
oliver