On 15 Apr 2008, at 17:07, Dylan Jay wrote:
Russ Ferriday wrote:
On 15 Apr 2008, at 07:45, Dylan Jay wrote:
That means every ATFile in the system will have those new fields
right?
It's not essential that all ATFiles have those fields. For example,
for a PloneGetPaid project, I created a schemaextender subclass
IRichDocumentDecorator to add fields to a RichDocument, IF they
provide IShippableMarker:
<adapter provides=".interfaces.IRichDocumentDecorator"
for="Products.PloneGetPaid.interfaces.IShippableMarker"
factory=".browser.storeitemdecorator.RichDocumentDecorator" />
You could mark your type at the time you handle the upload, once
you have inspected the file type. Rocky began doing this 18 months
ago in Plone4Artists, which has probably moved further along this
path.
Is that what the subtype menu does in p4a, just set a marker
interface?
Yes, I suspect it is. (It's been a while since I was in there.)
Seems like schemaextender is the way to go.
It was recommended to me by JF Roche.
Go to the example on the web. You can have it working in an hour!
--r.
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Russ Ferriday - Topia Systems - Open Source content management with
Plone and Zope
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