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Extending dtml entity syntax
by Steve Alexander 17 Aug '00

17 Aug '00

Chris Withers has suggested extending the DTML Entity syntax to include traversal information. For example: &dtml-foo/bar/baz; I just checked the XML standard. This isn't allowed in XML entities. http://www.w3.org/TR/1998/REC-xml-19980210#NT-Nmtoken EntityRef ::= '&' Name ';' NameChar ::= Letter | Digit | '.' | '-' | '_' | ':' | CombiningChar | Extender Name ::= (Letter | '_' | ':') (NameChar)* However, we could consider &dtml-foo.bar.baz; instead. I can't think of a nice alternative to mean &dtml-/foo/bar/baz; "from the root, traverse as follows". -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net

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ZPatterns, Transactions, _register/_unregister
by Bob Pepin 17 Aug '00

17 Aug '00

Hi, I've encountered some weird behaviour in the ZPatterns Transactional class when I was trying to write a User Source for the Login Manager Product. I'm using Zope 2.2.0 with LoginManager 0.8.7a1 and ZPatterns 0.4.1snap1 The problem is that _unregister seems to be trying to delete the _v_registered attribute of an object that doesn't have it set whenever I return None from authenticateUser(). The weird thing is that the object seems to be _register()ed and _v_registered appears to be set to 1 in _register(), but when _unregister() is called it has the value 'None' again. I've attached my code that's trying to implement the UserSource. here is what my modified _register and _unregister functions look like: def _register(self): f=open('/tmp/zopelog', 'a', 0) f.write('Register %s(%s)\n' % (self.id, str(self))) f.write('Before: %s._v_registered=%s\n' % (self.id, getattr(self, '_v_registered', 'N/A'))) for i in traceback.format_stack(): f.write(i) if self._v_registered: return get_transaction().register(Reporter(self)) self._v_registered = 1 f.write('After: %s._v_registered=%s\n' % (self.id, getattr(self, '_v_registered', 'N/A'))) f.close() def _unregister(self): f=open('/tmp/zopelog', 'a', 0) f.write('Unregister %s(%s)\nBefore: %s._v_registered=%s\n' \ % (self.id, str(self), self.id, getattr(self, '_v_registered', 'N/A'))) f.close() del self._v_registered and this is a sample log: Register UserSource(<NisUserSource instance at 85ab2e8>) Before: UserSource._v_registered=None File "/home/picard/bpe/Zope-2.2.0-src/ZServer/PubCore/ZServerPublisher.py", line 95, in __init__ response=response) File "/home/picard/bpe/Zope-2.2.0-src/lib/python/ZPublisher/Publish.py", line 222, in publish_module response = publish(request, module_name, after_list, debug=debug) File "/home/picard/bpe/Zope-2.2.0-src/lib/python/ZPublisher/Publish.py", line 162, in publish object=request.traverse(path, validated_hook=validated_hook) File "/home/picard/bpe/Zope-2.2.0-src/lib/python/ZPublisher/BaseRequest.py", line 427, in traverse else: user=v(request, auth, roles) File "/home/picard/bpe/Zope-2.2.0-src/lib/python/Products/LoginManager/LoginManager.py", line 110, in validate user = _DefaultAuth.findLogin(self, request, auth, user, roles) File "/home/picard/bpe/Zope-2.2.0-src/lib/python/Products/LoginManager/LoginMethods.py", line 147, in findLogin user = manager.getItem(name) File "/home/picard/bpe/Zope-2.2.0-src/lib/python/Products/LoginManager/LoginManager.py", line 65, in getItem user = source.__of__(self).getItem(name) File "/home/picard/bpe/Zope-2.2.0-src/lib/python/Products/ZPatterns/Rack.py", line 61, in getItem self._registerCanonical(k,item) # XXX Should we cache non-existence? File "/home/picard/bpe/Zope-2.2.0-src/lib/python/Products/ZPatterns/DataManagers.py", line 52, in _registerCanonical self._register() File "/home/picard/bpe/Zope-2.2.0-src/lib/python/Products/ZPatterns/Transactions.py", line 47, in _register for i in traceback.format_stack(): After: UserSource._v_registered=1 Unregister UserSource(<NisUserSource instance at 85ab2e8>) Before: UserSource._v_registered=None

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Re: [Zope-dev] ZClass properties and DTML
by Dieter Maurer 17 Aug '00

17 Aug '00

Carl Robitaille writes: > .... Is there a way to > include DTML tags in properties? If not, what are my other options? Not that I know of. Make your ZClass folderich (derive from Folder) and use DTML methods instead of properties. Dieter

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Funny bug in Zope?
by Erik Enge 16 Aug '00

16 Aug '00

I'm not quite sure if this is already reported or not, so I won't give much information on it (I've looked for something similar, but I haven't found it). I'm runnig Zope 2.2.0 under Linux. I have this product I've made myself - called TravelAgent. I add an instance of it to the Zope root-folder, which I call TravelAgent. Everything works fine. If I rename this instance to something that has less than five characters in it, something very fish starts to happen. I should also mention that in the index_html method's body-tag I have an background-element which displays somepic.gif. Now, if the instance is called f ex Trav (ie. less that five characters) and I try to render the index_html, it displays the background image correctly, but it also pukes out the gif in ASCII on top - and nothing else. This happens very consistently, unless I reload fast four, five times - then it display the whole index_html just fine. I rename back to Trave (ie. five characters or more) and everything is fine. I can reproduce this all the time. Strange, huh?

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Python class and ZClass
by Vincent 16 Aug '00

16 Aug '00

Hi, I would like to subclass a Python class with a ZClass. I mean that my DTML document will declare ZClass and I would like to be able to access the method declared in the python class (parent of the ZClass). Does anybody knows how to do that ? PS : I read a paper call "SubClassing from Custom Python classes", but I did not understood everything, so if somebody can give me an example or the main steps to solve my problem... Thank you very very much Vincent

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zpatterns-0.4a4
by Jephte CLAIN 16 Aug '00

16 Aug '00

There is a bug (a feature?) in Specialist.getItem in zpatterns-0.4a4: def getItem(self, key): if hasattr(self.aq_base,'retrieveItem'): return self.retrieveItem(key=key) # XXX need DTML check? for rack in self.rackList: item = rack.__of__(self).getItem(key) return item This code should (IMHO) read: def getItem(self, key): if hasattr(self.aq_base,'retrieveItem'): return self.retrieveItem(key=key) # XXX need DTML check? for rack in self.rackList: item = rack.__of__(self).getItem(key) if item is not None: return item return None regards, jephte clain jclain(a)univ-reunion.fr

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remote procedure calls to manage functions
by andrew 15 Aug '00

15 Aug '00

Have been delving into ZPublisher.Client to make remote procedure calls under Zope 2.2.1. Many of the manage_... functions work just fine through this interface (once the obvious bug on line 212 of Client.py is fixed, anyway ;-). Check out the example utilities/load_site.py if you want to get started in this very productive use of Zope. However, manage_addZSQLMethod refuses to work, always returning a 404 not found error. Don't have time at the moment to find out why, but I wondered if there was a simple reason for it (nothing seems simple at 3am does it)? In the meantime, calling it via an external method to act as glue is working fine.

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RE: [Zope-dev] Re: unit testing framework proposal
by Chris McDonough 15 Aug '00

15 Aug '00

Well, one method of attack is to develop the guts of your Product as a Python-only layer. Do all the "hard stuff" in the Python-only part of your Product. Develop unit tests to go along with this layer. Then, when you're ready to Zope-ify it, wrap a thin Zope layer around it. This works well with "small" products. The ZCatalog seems to have been developed this way. > -----Original Message----- > From: Stefane Fermigier [mailto:sf@fermigier.com] > Sent: Tuesday, August 15, 2000 4:20 PM > To: zope-dev(a)zope.org > Subject: [Zope-dev] Re: unit testing framework proposal > > > > Message: 2 > > From: Chris McDonough <chrism(a)digicool.com> > > To: "'zope-dev(a)zope.org'" <zope-dev(a)zope.org> > > Subject: [Zope-dev] unit testing framework proposal > > Date: Tue, 15 Aug 2000 14:10:14 -0400 > > > > Please see > > > http://dev.zope.org/Wikis/DevSite/Proposals/UnitTestingFramework for a > > propsal for inclusion of a unit testing framework within > Zope. Comments > > appreciated. > > Hi, > > I'm also very tempted to use systematically unit testing when > developing > Zope products, but I don't quite get how to do it, since Zope products > are so integrated within a whole framework. > > S. > > -- > Stéfane Fermigier, Tel: 06 63 04 12 77 (mobile). > <www.portalux.com>: le portail Linux / logiciel libre. > "Amazon: we patent the dot in .com" > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://lists.zope.org/mailman/listinfo/zope-dev > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope ) >

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Re: unit testing framework proposal
by Stefane Fermigier 15 Aug '00

15 Aug '00

> Message: 2 > From: Chris McDonough <chrism(a)digicool.com> > To: "'zope-dev(a)zope.org'" <zope-dev(a)zope.org> > Subject: [Zope-dev] unit testing framework proposal > Date: Tue, 15 Aug 2000 14:10:14 -0400 > > Please see > http://dev.zope.org/Wikis/DevSite/Proposals/UnitTestingFramework for a > propsal for inclusion of a unit testing framework within Zope. Comments > appreciated. Hi, I'm also very tempted to use systematically unit testing when developing Zope products, but I don't quite get how to do it, since Zope products are so integrated within a whole framework. S. -- Stéfane Fermigier, Tel: 06 63 04 12 77 (mobile). <www.portalux.com>: le portail Linux / logiciel libre. "Amazon: we patent the dot in .com"

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ZClass properties and DTML
by Carl Robitaille 15 Aug '00

15 Aug '00

Hi, Here is a small introduction on what I'm trying to acheive. I want to have a simple bilingual News system on my web site, having headlines and text in both languages. At first, I read the ZDG and then some HOW-TOs to learn how to make ZClasses. So I created a new product, and a ZClass inside it. I then added the following properties 1) headline_en [string] 2) headline_fr [string] 3) text_en [text] 4) text_fr [text] Everything works fine, expect when these include DTML instructions. For example: <dtml-in "objectValues(['News Entry'])"> <p><dtml-var text_fr></p> </dtml-in> If one of the objects text_fr properties contains "<dtml-var some_var>: Some more text", then the resulting HTML will contain contain the dtml tag and not the rendered equivalent of "some_var". Is there a way to include DTML tags in properties? If not, what are my other options? Any comment or suggestion is very welcome. Carl

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