[Zope-dev] Writing custom folderish products

[Martijn Faassen]

Hi there,

I'm writing a product (in Python, not with ZClasses) which consists of:

form - a folderish object to which you can add..
fields - a number of SimpleItemish objects that can be added to a form

What I have working:

* I can make the form behave like a folder by deriving it from
OFS.ObjectManager

* I have a number of fields that can be added anywhere in the Zope tree

What I want to reach is this situation:

* I want the form to behave like an folder, but only fields should be
addable.

and

* Fields should not be addable anywhere but in a form.

What set of incantations would accomplish this? Any example source? Or
Zope source code I should study? Anything? Any hint in the right
direction would be appreciated.

Regards,

Martijn