[Product-Developers] New style collections: migration, sub collections?
David Glick (Plone)
david.glick at plone.org
Fri Nov 2 00:27:51 UTC 2012
On 11/1/12 10:29 AM, Maurits van Rees wrote:
> A few quick questions about the new style collections in Plone 4.2, to
> check that I understand them correctly.
> Unless I have missed something, old style collections are not migrated
> to new style when migrating to Plone 4.2. Does someone have code that
> would do that? Perhaps an add-on that I missed? If not, then I might
> want to create a package for that.
I'm not aware of existing code to do this, but it would be a nice thing
to have. Perhaps it would make sense to add to plone.app.collection (as
an optional thing) instead of a separate package?
> Sub collections are not possible in the new style. I guess this is
> because the UI and the logic can quickly get confusing and you do not
> win much over creating a second, separate collection.
> I am guessing that creating a folderish version of the new style
> collections should work though, allowing you to nest them. Some logic
> would be needed that looks for a parent collection and combine the two
> queries. That may not be good for Plone core, but are there technical
> reasons why this would not be possible?
I'm not aware of technical reasons against it. I think the subcollection
feature was removed mostly because it was confusing.
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