Tres Seaver wrote:
Hash: SHA1

Philipp von Weitershausen wrote:
Rocky wrote:
On Feb 23, 3:50 pm, Martin Aspeli <[EMAIL PROTECTED]> wrote:
yuppie wrote:
Maybe I'm missing something. But wasn't a major goal of
five.localsitemanager to return acquisition wrapped tools?
That was my understanding, too. I thought this would just mean
aq_base'ing the utility and aq-wrapping it back into the context (the
portal root). Without this, we start requiring users of the interface to
know when aq wrapping is needed and do it explicitly with __of__() which
I think we agreed was unacceptably detailed and ugly. :)
Alright, I've gone ahead and put code in place for this (albeit a bit
naively) with r72810.  The next question is whether we should be doing
the same with adapters and subscribers as well (even though this
doesn't affect the whole tools-getting-acquired-properly issue).
One more thing: This acquisition wrapping should clearly be marked (with comments) as something that's done to for BBB because some tools happen to want acquisition. I think in the future, it should be discouraged to expect acquisition in CMF tools.

- -1.  This is not *yet* BBB, until we require a version of Zope which no
longer uses acquisition for anything crucial.  Premature deprecation is
"crying wolf", IMNSHO.

I nowhere said anything about deprecation. All meant was to discourage relying on acquisition when developing new tools. I think that deserves a comment (I suggested nothing more). No deprecation warning or anything necessary;.

To get to the portal root / CMF site, I suggest a pattern that is sometimes used in Zope3: We register the CMF site object as a utility providing ICMFSite (or whatever). Then whichever code that's executed below the portal (and that includes CMF tools) can do getUtility(ICMFSite) to get to the site.

Adapters and subscription adapters should not be acquisition wrapped.

They darn well better be able to get a wrapped context (which means that
the event *must* have a wrapped attribute) or they will be less than

That's something else. Adapters and subscription adapters will get whatever they are looked up with. If that's wrapped, fine. E.g. if you do IWhatever(obj) and you got obj thru acquisition, then the IWhatever adapter will see obj with all its acquisition glory. But The adapter objects themselves shouldn't be wrapped. It would break, say, views which happen to be adapters.

Note that subscription adapters != subscribers. Subscribers don't return objects upon lookup, they're just executed. Subscription adapters are more like adapters.

-- -- Professional Zope documentation and training
Next Zope 3 training at Camp5:

Zope-CMF maillist  -

See for bug reports and feature requests

Reply via email to