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ANNOUNCE: Zope 2.3.0 beta 1 released
by Brian Lloyd 16 Jan '01

16 Jan '01

Hello all, Zope 2.3.0 beta 1 is now available. You can download it from Zope.org: http://www.zope.org/Products/Zope/2.3.0b1/ This release contains the final new features for 2.3, including: - A browser preferences screen to allow people to tweak certain aspects of the new management UI to their liking. For the folks who complained that they didn't like the new top frame, they can (among other things) turn it off from the browser preferences screen. - Michel and Amos' new QuickStart material. This is different in spirit than the old "QuickStart" folder. The new material is meant as a handy high-level set of pointers to important learning materials. The old "QuickStart" folder is still around by default for the beta release - we will need to decide whether to get rid of it altogether or whether it still has value as an example and should be cleaned up and retained. - The logout function has been implemented in a fairly minimal way. We will try to make this nicer by final if we get time. - Chris Petrilli has cleaned up the ZCatalog interface and done some logical reorganization to move some things onto an Advanced tab. For more information on what is new in this release, see the CHANGES.txt and HISTORY.txt files for the release: - http://www.zope.org/Products/Zope/2.3.0b1/CHANGES.txt - http://www.zope.org/Products/Zope/2.3.0b1/HISTORY.txt Note that now we are in the beta period, so binaries are now available for all of the usual platforms. Enjoy! Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Session
by Anderson Ami 16 Jan '01

16 Jan '01

How can I use this line ? Do I need any product ? <dtml-call "Session.set('myVariable','somevalue')> Anderson

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ANN: CoreSessionTracking 0.5 dev release
by Chris McDonough 15 Jan '01

15 Jan '01

Howdy folks, A new development release of the core session tracking implementation (which allows you to store state between requests for anonymous visitors) is available at http://www.zope.org/Members/mcdonc/Products/CoreSessionTracking. The latest release is 0.5. Thanks, - C

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Debugging Zope with Komodo
by Andy McKay 15 Jan '01

15 Jan '01

Aaron has just helped me get Komodo debugging working for Zope. Both Neil and I think this is great, for the first time we can see the interaction of Zope internals as they happen (its no longer a black box anymore). This shed so much light on Zope, I think its great and so will any Zope developer. Many thanks to all involved in Komodo for making this happen. -- Andy McKay.

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Z Search Interface/ZCatalog bugs
by Casey Duncan 15 Jan '01

15 Jan '01

There is a bug in 2.3.0a2 that prevents you from adding a Z Search Interface. It is basically a pathing issue to a dtml file that moved. The following is a patch for Aqueduct.py to temper this issue: 102c102 < dtml_dir=Globals.package_home(globals()) --- > dtml_dir=os.path.join(Globals.package_home(globals()),'dtml') There is also a bug in the Z Search Interface implementation of ZCatalog. Basically ZCatalog returns the list of Meta Data fields for both the searchable arguments and results. This means the search form created for a ZCatalog will probably not contain the correct fields. This patch corrects ZCatalog so that it returns its indexes as the searchable arguments. 448c448 < for name in self._catalog.schema.keys(): --- > for name in self._catalog.indexes.keys(): I will be sumitting these to the collector as well. -- | Casey Duncan | Kaivo, Inc. | cduncan(a)kaivo.com `------------------>

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Specialists and __bobo_traverse__
by Roch'e Compaan 15 Jan '01

15 Jan '01

Recent sightings of the use of __bobo_traverse__ in SkinScript gave me hope of giving users a more useable breadcrumbs trail in the case where I have nested specialists. My TaskTemplates specialist is nested inside my RequestTypes specialist. When I retrieve a dataskin from the RequestTypes specialist I have a tab that lists TaskTemplates for that RequestType specialist. Following a link from the TaskTemplate list takes you to that instance. Thus results in a url like this: /RequestTypes/<request type instance>/Task Templates/<task template instance>, and what I ideally want is: /RequestTypes/<request type instance>/<task template instance>. I read all the comments about __bobo_traverse__ and created a python method, "traversal_method" inside the "RequestTypes" specialists. I must admit that I don't really understand Zope's traversal machinery yet and would appreciate some guidance. My SkinScript for RequestTypes: WITH SELF COMPUTE __bobo_traverse_=traversal_method My traversal_method: ob = getattr(self, name) if ob is not None: return ob else: ob = self.TaskTemplates.getItem(name) if ob is not None: return ob raise 'NotFound' Any help would be greatly appreciated. Roché

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Re: [Zope-dev] New UI for 2.3
by Simon Michael 15 Jan '01

15 Jan '01

Simon Michael <simon(a)joyful.com> writes: > I think it needs an image content-type ? Sorry, just my flaky link. For shame, to think such a thing. My two cents on the screenshot: - looks like good progress! - the top bar as shown definitely doesn't make best use of my precious screen space, should become a user option - for what it's worth I too spend most of my time in manage_main to avoid frames confusion - agree with Andy's point about many shades of blue - I think the black might grow on me - stating-the-obvious: a centralized stylesheet and more user preferences for all management pages would be good -Simon

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SkinScript enhancement
by Steve Alexander 14 Jan '01

14 Jan '01

While debugging some dependencies in some of my SkinScript, I had an idea. SkinScript could be extended so that COMPUTE statements can have a RECOMPUTE FOR clause. This clause would tell a dataskin to invalidate its cache for the attributes in the COMPUTE statement if any of the attributes in the RECOMPUTE FOR clause changed. So, WITH QUERY some_method(primary_key=ms_vars_id) COMPUTE foo,bar,baz OTHERWISE LET foo='no foo', bar='no bar', baz='no baz' RECOMPUTE FOR ms_vars_id This is equivalent to the above statement, without the RECOMPUTE FOR clause, followed by a trigger: WHEN OBJECT ADDED, CHANGED CALL HAS_CHANGED('ms_vars_id') and self._uncache_attrs(['foo', 'bar', 'baz']) This assumes a method of DataSkins.DataSkin _uncache_attrs: def _uncache_attrs(self, names): v=self._v_attrCache for name in names: del v[name] I haven't tested any of this yet. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net

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Tip: Skinscript Debugging
by Steve Alexander 14 Jan '01

14 Jan '01

When debugging skinscript, especially tricky dependencies between what gets computed when during state changes, do the following: 1: Run zope in debug mode (-D) 2: Put an external method called print_ in the root of your ZODB, with the code: def print_(s): print s 3: In your SkinScript, if you want to know when a trigger is called, or when a set of attributes get computed, use this kind of thing: WITH QUERY foo(id=some_id) COMPUTE thing=RESULT, bar=baz, _printout_foo=self.print_('query foo called, id=%s' % some_id) OTHERWISE LET thing=_.None, bar='no bar', _printout_foo=self.print_('query foo called, otherwise clause') WHEN OBJECT CHANGED CALL print_('CHANGED start'), Catalog .uncatalog_object(_.string.join(self.getPhysicalPath(),'/')), print_('CHANGED middle'), Catalog .catalog_object(self, _.string.join(self.getPhysicalPath(),'/')), print_('CHANGED end') 4: Read the debug printout, and work out that you're computing attributes for cataloging before changing the attributes they depend on. 5: Amend code and skinscript, test, document code, sleep. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net

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(no subject)
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14 Jan '01

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