[Zope-CMF] Saving custom data in a MemberData-objectfrompython

[Tres Seaver]

marc lindahl wrote:
> 
> > From: Shane Hathaway <shane@digicool.com>
> >
> > marc lindahl wrote:
> >>
> >> Question:  let's say you add some preference, like birth_date.  How/where do
> >> you change the sign-up screen and the preferences screen to access that?
> >> And do some action like, don't allow signup for age<13....
> >
> > Currently you'd have to subclass or replace portal_registration, which
> > you could do with ZClasses or a Python product.  Invoking a customizable
> > script might be better.
> 
> Forgive my newbieness but...  replacing portal_registration.py would impact
> all CMF sites, right?  Probably not a good idea...  and subclassing it and
> sticking the subclass into wherever portal_registration.py is used would be
> basically the same thing, right?

Shane is recommending replacing the instance, named
'portal_registration' in the root of your CMFSite, with an
instance of another class;  you wouldn't (ordinarily, at least)
want to muck with Products.CMFDefault.RegistrationTool (the module
which exports the class of the current instance).

> If there were some way to modify the portal_registration tool
> once the CMF site was created, like the way portal_memberdata
> properties can be added, would that be a way to do it?

The current implementation of the registration tool doesn't permit
any "through-the-web" tweaking of its policies.  We typically expect
to replace several of the tools with custom versions;  the registration
tool is one of these.

> Is this kind of thing the purpose of the CMFDefault directory?

The tools and content in the CMFDefault product provide working
versions of the components needed to build a CMF-based site;  many
sites can happily use them, *where the policies they implement are
reasonable*.  We moved the different "services" of the site into
replaceable "tool objects" precisely to allow a site to replace one
or more of them, while leaving in place those "default" versions
which are acceptable.

Tres.
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===============================================================
Tres Seaver                                tseaver@digicool.com
Digital Creations     "Zope Dealers"       http://www.zope.org