[Zope3-dev] Alternate schema types

[Gary Poster]

On Jul 12, 2005, at 11:01 AM, Tres Seaver wrote:

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> I would like to break the hard-wired assumption in the forms / widgets
> machinery that all schemas must be interfaces with fields;  in
> particular, I would like to make the introspection of the fieldset  
> from
> a given schema pluggable.

The use cases make sense to me.

An observation is that the proposed implementation only works with  
zope.app.form and perpetuates some other assumptions within the  
zope.app.form.utility module--assumptions that we have found  
constraining.

The zope.formlib package (http://svn.zope.org/zope.formlib/trunk/,  
formerly known as zc.page) already provides a more powerful  
abstraction in IFormFields.  The abstraction is only helpful with the  
zope.formlib utilities, though (not zope.app.form.utlilty).

A notable downside is that it is not an out-of-the-box fit for Zope  
2.8/Five, since the package relies on Python 2.4.  A Python 2.3  
version probably would be easy enough, removing some of the Python  
2.4 features.

Gary