David Glick wrote:
On Jun 18, 2008, at 1:44 PM, Malthe Borch wrote:
Martijn Faassen wrote:
There's one major problem that I see. What's the backwards
compatibility story? I'm sure there are a lot of cases in lots of
code where people look up views with a getMultiAdapter, and if we
started registering views differently, wouldn't that code break? How
to we get from A to B?
It deserves consideration, but I don't think code will be prone to
break since we're merely providing more information to lookup a view
component, not less.
Exactly. The interface passed to getMultiAdapter or queryMultiAdapter
is a minimum requirement. Making views provide IView won't stop them
from providing Interface, which is the default.
Well, true, view *lookup* for Interface will still work if we register
views for a more specific interface. But if Zope's browser publication
now starts looking up views with the more specific interface and there
are still views around that haven't been registered for that but for
Interface, we'll run into backward compatibility problems.
I suppose the browser publication would have to be smart about it and do
a legacy lookup for Interface if it can't find a view for the specific one.
Either way, it's not *that* simple...
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