April 2006 - Zope - Zope lists

Rndering Products
by Thomas Adams 23 Apr '06

23 Apr '06

Hello, on an own product I've coded this: index_html = Globals.DTMLFile('dtml/viewLinkListItem', globals()) __str__ = index_html If I start now Zope again a message PROBLEM(100) Init Ambiguous name for method of Products.KBProducts.kbarticle_impl.LinkListItem: "__str__" != "index_html" appears. Anything behave as it should, so the string representation of this product works if i For instance call it up within a dtml-loop: <dtml-in getLinks()> <dtml-var sequence-item> </dtml-in> In this loop the LinkListItem Product is rendered as defined in index_html Does anxboy has any ideas about the Zope message ?? Thanks in advance Thomas Adams

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zope-2.8.4 and ZopeXMLMethods
by Milos Negovanovic 23 Apr '06

23 Apr '06

Hi, i am having trouble with running ZopeXMLMethods on zope-2.8.4. Error is: * Module ZPublisher.Publish, line 113, in publish * Module ZPublisher.mapply, line 88, in mapply * Module ZPublisher.Publish, line 40, in call_object * Module Shared.DC.Scripts.Bindings, line 311, in __call__ * Module Shared.DC.Scripts.Bindings, line 348, in _bindAndExec * Module Products.PageTemplates.PageTemplateFile, line 110, in _exec * Module Products.PageTemplates.PageTemplate, line 104, in pt_render <PageTemplateFile at /scratch/create> * Module TAL.TALInterpreter, line 206, in __call__ * Module TAL.TALInterpreter, line 250, in interpret * Module TAL.TALInterpreter, line 651, in do_loop_tal * Module Products.PageTemplates.TALES, line 206, in setRepeat * Module Products.PageTemplates.TALES, line 221, in evaluate URL: create Line 70, Column 6 Expression: standard:'here/availableProcessors' Names: {'container': <App.ProductContext.__FactoryDispatcher__ object at 0xb68bb06c>, 'context': <App.ProductContext.__FactoryDispatcher__ 0xb68bb06c>object at 0xb68bb06c>, 'default': <Products.PageTemplates.TALES.Default instance at 0xb721fe8c>, 'here': <App.ProductContext.__FactoryDispatcher__ object 0xb721fe8c>at 0xb68bb06c>, 'loop': <Products.PageTemplates.TALES.SafeMapping object at 0xb481980c>, 'modules': 0xb481980c><Products.PageTemplates.ZRPythonExpr._SecureModuleImporter 0xb481980c>instance at 0xb712402c>, 'nothing': None, 'options': {'args': ()}, 'repeat': <Products.PageTemplates.TALES.SafeMapping object at 0xb481980c>, 'request': <HTTPRequest, 0xb481980c>URL=http://piccolo:8080/scratch/manage_addProduct/ZopeXMLMethods/create>, 'root': <Application at >, 'template': <PageTemplateFile at /scratch/create>, 'traverse_subpath': [], 'user': z00root} * Module Products.PageTemplates.Expressions, line 185, in __call__ * Module Products.PageTemplates.Expressions, line 180, in _eval * Module Products.PageTemplates.Expressions, line 85, in render It happens when i try to add 'XSLT Method' (as described in short tutorial provided with the product). Something similar has already been reported in this thread: http://mail.zope.org/pipermail/zope/2005-September/161412.html Any way that i can fix this? Regards Milos

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Rendering Product by index_html
by Thomas Adams 22 Apr '06

22 Apr '06

Hello, on an own product (derived from ObjectManager) I try to code a render method, therefore I've coded this first def index_html(self): return Globals.DTMLFile('dtml/viewKBArticle',globals()) the result of calling an URLl like this .../MyArticle/index_html was that the above mentioned DTML-File was completely rendered as html quoted text like this : lt;?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> ... etc. Then I made a search in the mailing list and try this: myIndex = Globals.DTMLFile('dtml/viewKBArticle',globals()) def index_html(self): return self.myIndex(self, self.REQUEST) this results in : *Error Type: TypeError* *Error Value: unsubscriptable object * Traceback (innermost last): Module ZPublisher.Publish, line 101, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 39, in call_object Module Products.KBProducts.kbarticle_impl, line 440, in index_html Module Shared.DC.Scripts.Bindings, line 306, in __call__ Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec Module App.special_dtml, line 175, in _exec Module DocumentTemplate.DT_In, line 685, in renderwob Module OFS.ObjectManager, line 656, in __getitem__ Module OFS.ObjectManager, line 241, in _getOb TypeError: unsubscriptable object At last I try this: index_html = None __call__ = Globals.DTMLFile('dtml/viewKBArticle',globals()) This results also in a TypeError (traceback see above) Has anyboby any ideas?? Current Zope is 2.7.3, Python 2.3.4 on Windows XP SP2 Thanks in advance Thomas Adams

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Re: [Zope] REQUEST.form variables order
by Gaute Amundsen 21 Apr '06

21 Apr '06

On Friday 21 April 2006 21:04, Dieter Maurer wrote: > Gaute Amundsen wrote at 2006-4-21 11:01 +0200: > >On Thursday 20 April 2006 20:11, Dieter Maurer wrote: > >> Gaute Amundsen wrote at 2006-4-19 19:03 +0200: > >> >I want to retrieve the form fields in the order that they where > >> > submitted in the http POST. I know this has been brought up before, > >> > and that the answer is "You cant." > >> > >> You might be able to do it. > >> > >> Try "REQUEST['BODY']". For a "POST" request, it should > >> contain the entity content. > >> > >> Of course, you would have to decode it yourself ;-) > > > >What? It can't be that simple! > >I thougt I had been poking all around the corners of REQUEST, looking for > > just somthing like that. > > > >Hm.. no. > > > >Error Type: KeyError > >Error Value: 'BODY' > > > >Are you sure about this? > > I was wrong. > > "BODY" is only defined in the "read_single" case > (see "cgi.FieldStorage" for details) -- this means: > not for "application/x-www-form-urlencoded" nor > for "multipart/" content types (and therefore not > for general "POST" requests as I claimed). > > "FieldStorage" however still preserves the field order > (in "FieldStorage.list"). The order is lost > in "ZPublisher.HTTPRequest.HTTPRequest.processInputs". Hm.. you have had a second look I see :) Now REQUEST.stdin and cgi.parse_qsl solved my problem neatly, and this kind of "under the hood" work stil is a bit of a chalenge for me, so I'm afraid l will not work on a more "proper" solution this time. But thanks for looking into it. Gaute

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Permissions, files and folders
by Erik Billing 21 Apr '06

21 Apr '06

Hi! I just started looking at zope, so this might be a pretty nooby question, but I didnt find an answere anywhere, so... I want to create a DTML Method that lists the files in a folder that the current user has access to. Problem is that the objectValues-method returns all files simultaniously, so I get a AccessControl.unauthorized.Unauthorized exception when I call the method. I did a litle python script that iterates over the objectValues and catches the errors raised from unauthorized files as folows: files = [] fileIterator = iter(container.objectValues('File')) while True: try: files.append(fileIterator.next()) except Exception, e: if isinstance(e,StopIteration): break else: files.append(e) return files This works fine, except that it's a bit clumsy and has one big error; I catch just any exception that arises from the files.append(fileIterator.next())-call, and swallow it. I've tried catching only the Unauthorized-exception, but an anonymus user does not have access to the Unauthorized-exception, so I can't specify is in my except-declaration without getting a new authorization error. All thaw it works fine to catch all exceptions for a simple directory listing like this, its defiantly nothing I wanna put into a larger application. So my question is, how do I do this in a nicer way? Thanx /Erik

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REQUEST.form variables order
by Gaute Amundsen 21 Apr '06

21 Apr '06

I want to retrieve the form fields in the order that they where submitted in the http POST. I know this has been brought up before, and that the answer is "You cant." http://mail.zope.org/pipermail/zope/2005-October/162460.html For zope to refuse to expose this information to me is really quite arrogant and un-unix like behavior. After all unix lets you do "rm -rf /"... Now in addition to that, it happens that I have almost a hundred forms scattered around maybe 50 sites that all used to use the formmail.pl script, that now use our own zope based workalike. That is, it can not "work-alike" because zope discards the information I need to make it so! To painstakingly alter them all to add this sequence ordering information, just because zope refuses to do as every other scripting system out there that I am aware of, is just out of the queston. My best Idea so far, is to use the apache proxying we use anyway, to run all requests to this url through a small perl or php proxy, that ads the ordering info to the POST. Does anyone have any better ideas? Get hold of the original http data somehow and parse them myself? Patch zope to use a dictionary type that keeps order for req.post? Patch zope to save the ordering as a property in req.post? Regards Gaute Amundsen

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Documentation and Books
by Erik Billing 21 Apr '06

21 Apr '06

I quite recently began looking at Zope and now I'm looking for a good book on the subject. I'm fairly familiar with both Python and webapp development in general, so I'm looking for a book covering pretty much everything about Zope I need to know, rather then an introduction. I've read a few reviews on Amazon and Web Component Development with Zope 3 seams to be a good choice. Does anyone have another to recommend? By the way, I'm surprised how little zope documentation I've found on the web. I'm missing a complete API reference for example. And is there a living Wiki available somewhere? If not, why not start one? Any tips on good recourses are greatly appreciated. ..Erik

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Zope product update question
by Cyrille Bonnet 21 Apr '06

21 Apr '06

Hi there, I have a question regarding product update. I have updated a product (ATContentTypes) on the file system. Upon restarting the server, the new version of the product appears in red in the QuickInstaller (as expected). Even though I haven't re-installed the product, some changes are picked up (for instance, it uses the new schemata for ATDocument). Is this the expected behaviour? What is exactly the difference between a non-installed product on the file system and an installed product? Is the only difference that the Install.py is run when you install the product?? I am using Zope 2.7.4.0, Python 2.3.4. The versions of ATContentTypes are 0.2.0-rc3 (current) and 0.2.1-final (future, uninstalled). Any help appreciated. Cheers, Cyrille

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Regular Expressions
by April Lekin 20 Apr '06

20 Apr '06

Can you use regular expressions in Zope? I'm trying to do a date match, something like this: date = re.match(l_date, '\d\d\d\d\/\d\d/\d\d') Looks like it doesn't like the "re.match"?

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Re: Automatically adding properties (keywords) to folders
by Tres Seaver 20 Apr '06

20 Apr '06

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Terry Jones wrote: > Hi Tres > > Thanks for your answer. Could I trouble you a little bit more please? > > I don't know where I'd put these fragments (and the last one seems > incomplete, perhaps intentionally?). I'm happy to read and code myself, so > I don't mean to ask for much here, but I'm not sure what to do with your > suggestion. I read version 2.6 of the zope book, and today found out > there's a proto-version 2.7, which I'll take a look at. Note that the "new way" stuff is only for Zope *later* than 2.8.x. In that case, you would define the function in a module somewhere on your $PYTHONPATH (e.g., in $INSTANCE_HOME/lib/python, or in a product) and then register it in a ZCML file which is included from your 'site.zcml' (in $INSTANCE_HOME/etc). > Anyway, thanks again. > > Terry > > | The old way to do that we be to derive your own folder class and > | override '_setObject' / '_delObject' to add your semantics. > | > | The new way (for Zope >= 2.9) would be to register a subscriber for the > | "container" events which are published automatically. Something like > | (untested):: > | > | def update_keywords(event): > | keyword = getattr(event.newparent, 'keyword', None) > | event.object.keyword = None > | event.object.reindexObject() > | > | and then in ZCML:: > | > | <subscriber > | for="zope.app.event.objectevent.ObjectEvent" > | factory="Products.yourproduct.events.update_keywords" Tres. - -- =================================================================== Tres Seaver +1 202-558-7113 tseaver(a)palladion.com Palladion Software "Excellence by Design" http://palladion.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFER/Iq+gerLs4ltQ4RAvSAAJ9edkh96NO63lrKF6mkuDeAGYSYWQCgp98g hp/tu+8LtZFYjJvX3rSxuao= =m3sh -----END PGP SIGNATURE----- -- =================================================================== Tres Seaver +1 202-558-7113 tseaver(a)palladion.com Palladion Software "Excellence by Design" http://palladion.com

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