[Zope-CMF] Re: Add forms and menus

[Robert Niederreiter]

Am Donnerstag, den 17.07.2008, 13:03 +0200 schrieb Charlie Clark:
> Am 16.07.2008 um 17:24 schrieb Martin Aspeli:
> 
> > I think it's a fairly big shift to assume that the FTI has knowledge  
> > of "the
> > schema" of the type. It's not necessarily a *bad* idea (at least I  
> > don't think
> > so, since this is basically how Dexterity works :-), but right now,  
> > FTI doesn't
> > have any notion of a schema. With this change, you're effectively  
> > dictating (or
> > strongly suggesting) that all CMF types have "a schema" and that  
> > this is the
> > basis for forms, and suggesting that forms aren't registered as  
> > independent
> > views but rather inferred from this schema.
> 
> Indeed. It is reasonable to expect a subclass to provide a set of  
> FormFields but this is not the same as a schema. We have found being  
> able to handle "portal_type" and "schema" or "fields" ie. an instance  
> FormFields() in the super class to avoid repeated use of the somewhat  
> cumbersome FormFields(TextLine(__name__...)) code.
> 
> >> we discuss the generic adding approach, we further discuss what has  
> >> to
> >> be considered to be generic.
> >
> > I'm just not sure that generic is so good. If it's easy to make add-  
> > and edit-
> > views (probably with convenience classes for CMFish container adding  
> > behavior)
> > and obvious how to register them, then do you need more framework?  
> > At least not
> > in CMFCore.
> 
> 
> Explicit is always better than implicit. This stuff really isn't a lot  
> of work but it provides clarity and helps people understand what's  
> going on and I think this is essential for any framework. Less magic  
> is more power. ;-)

sorry, but implementing something like:

class Addform(AddformBase)

    fields = form.Fields(ISchema)

and registering it then like:

<browser:page
  for="*"
  name="myfactoryname"
  class=".foo.Addform"
  allowed_interface="Procucts.CMFCore.browser.interfaces.ICMFAddForm"
  permission="add.whatever"
/>

..does not give the newbee more clue on whats going on than write it not
at all.

robert

> 
> Charlie
> --
> Charlie Clark
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