February 2005 - Zope

The specified locale "de_CH" is not supported by your system
by robert 20 Feb '05

20 Feb '05

Hi, I do not exactly know when and how this started to happen, but I can not add any local key in zopes config file anymore. When I do, I get an error: The specified locale "de_CH" is not supported by your system This seems to be related to security upgrades of the Linux used (SuSE 9.1). One of the boxes runs since a couple a monts without a zope restart. If I do zopectrl status I get mentioned error. On an other box I had to comment the local setings out in order to be able to start zope. What could be the reason? And where should I look for a solution? Robert

2 3

Re: Post authentication hook question
by Dieter Maurer 20 Feb '05

20 Feb '05

Please send all Zope related questions to a mailing list (and not to me privately)! Cyrille Bonnet wrote at 2005-2-20 11:12 +0100: > ... >So, I have been looking into your Post Authentication >Hook, as well as issue #935 in the Zope Collector >(same idea, integrated in the Zope Core). > ... >* with your code, I don't have a class >Zope/App/startup.py. Do I have to create it? This is not a class but a file. You apply patches (like this) with the "patch" utility. It usually is installed on Linux; there are version for Windows around. For this patch to install, you should be in <yourZopeFolder>/lib/python > ... >The line: >pah= >getattr(request.PARENTS[0],'post_authentication_hook',None) >is bit cryptic to me... Sorry :-) "request.PARENTS" contains the parents of the published object. It probably is explained in the Zope Book. "request.PARENTS[0]" is the immediate parent of the published object (the published object is the one determined by URL traversal). "getattr" is a Python builtin for computed attribute access. "pah = getattr(obj, 'post_authentication_hook', None)" means assign "obj.post_authentication_hook" (maybe acquired) or "None" to "pah". Put together: Look whether "request.PARENTS[0]" can acquire an object 'post_authentication_hook". If so, call it. Or spelled differently: when you want a "post_authentication_hook" to be called, you create an object of this name somewhere in your Zope tree. All URLs that go somewhere into this subtree have the hook. >* with the Zope solution, I can't figure out which >version of Zope includes a fix for issue #395. There >seems to be no way to link an issue resolution to a >version number... I may be wrong -- but I doubt that it found its way into the Zope core. The Zope maintainers are quite reluctant to incorporate "features"... >.... >And then again, how do you define which Python script >to execute? It seems that one needs to call that >method: post_traverse(self, f, args), but where, how? >Do you know of any documentation and/or example? As I have my own post traversal hook, I never bothered with its "competitor" :-) -- Dieter

1 0

Transience read conflicts
by Dennis Allison 18 Feb '05

18 Feb '05

We are seeing occasional read conflicts in Transcience. Traceback (innermost last): [...]] Module Products.PythonScripts.PythonScript, line 323, in _exec Module None, line 6, in setSessionVariable - <PythonScript at /setSessionVariable used for /questionbanks/questionbank_edit/queries> - Line 6 AssertionError: Assignment to "currentQuestionBank" failed database read conflict error (oid 0x1205, class Products.Transience.TransientObject.TransientObject) Zope 2.7.3 Pythn 2.3 Transcience apparently throws an exception rather than serialize. Is that a bug? Is this a bug?

2 4

Asked for authentication when reading property after upgrade from 2.6 to 2.7
by Uli Franke 18 Feb '05

18 Feb '05

This problem occurs in a project that works perfectly with ZOPE 2.6. After the upgrade to ZOPE 2.7.4 the user is asked for permission when ZClass code references a property defined in a property sheet. More detailed: A tal command of a ZPT inside a ZClass tries to access a property that is defined in a property sheet of the same ZClass, but is - of course - given a value in the instance of the class. In ZOPE 2.7.4 the user is asked to authenticate, and if he cancels authentication he gets the message: "Error > Value: You are not allowed to access 'teillisten_laenge' in this context". where teillisten_laenge is the property in question. This is just one example - the problem seems to occur in all similar cases. Here's the code fragment that tries to read the value of teillisten_laenge: <span tal:define="listen_laenge here/propertysheets/listenstil/teillisten_laenge"> <span tal:define="sort_kriterium string:id"> ... </span> </span> Someone confronted with the same problem? Seems to be a bug, or could it be wanted behaviour? Any proposals for a workaround? Thanks, Uli

3 2

links with accents in structered texts (Plone)
by fcerqueira 18 Feb '05

18 Feb '05

Hi all, some of you probably use Plone and structured texts. Well, I'm from Brazil and Portuguese has words with accents. In structured texts, links can be created using the format: "name-that-appears-to-the-user":link Very well, but when the part between quotations marks has a word with an accent, plone does not recognize the text as a link but as a regular text. I'v tried change the default_charset in: portal_properties/site_properties to utf-8, iso-8859-1, iso-8859-15 and cp037 but didn´t work. utf-8 works very well in every other contents in the site, I mean all accents are right, except when I use in links. Maybe I have to set up the zope charset. I've tried some times but it was unsuccessful. Any idea? Thanks, . Fabio .

2 1

Uninteligible error messages
by jamie＠textmatters.com 18 Feb '05

18 Feb '05

Quite often, the error messages from zope are not helpful (IMHO). For example, does anyone know why doing this in a python script: script.manage_addProperty("test","null/null/null","date") gives the error: AttributeError: SyntaxError instance has no attribute 'replace' But a differently-bad date, like this: script.manage_addProperty("test","null","date") gives the error: IndexError: string index out of range Neither of which is particularly helpful at diagnosing the error. Why can't it return something like "DateException could not convert string to date" Does this count as a bug that should go in collector? Robert (Jamie) Munro

3 2

What kind of attributes can be put inside a simple item
by Marco Bizzarri 18 Feb '05

18 Feb '05

Hi all. I'm little surprised by the possibility to insert non-persistent instances inside persistent object. I mean: class Alfa: def __init__(self): self.x = 1 self.y = 2 class Beta(SimpleItem): def __init__(self): self.id = 'anId' self.anAlfa = Alfa() I always understood that I could not put Alfa instances inside a Beta class, because the ZODB machinery did not understood how to pickle them. But I did some experiments recently, and it looks like the above example should work. Could anyone provide some insight on this topic? Thanks Regards Marco

5 5

Re: zopeXMLMethods and Zope 2.7.x
by Anton Stonor 18 Feb '05

18 Feb '05

Francois-regis.Chalaoux(a)sanofi-aventis.com wrote: > It seems that zopeXMLMethods and Zope 2.7.x do not work correctly together. > In fact, installed xml processors are not visible from ZopeXMLMethods > object in ZMI (blank list). Personaly I use 4Suite 1.0a4 as processor. > Everything work with Zope 2.7.2 but since Zope 2.7.3 every fail. > > Have you this problem, solutions ? Been there too. I've patched the __init__.py. The attached one should work. To fix 4Suite support I did this: In FourSuiteProcessor.py: Remove these lines: if not os.environ.has_key(XML_CATALOGS): os.environ['XML_CATALOGS'] = /please/ignore/this/workaround And replace this: from Ft.Lib.Uri import SchemeRegistryResolver with this: from Ft.Lib.Resolvers import SchemeRegistryResolver /Anton """ $RCSfile: __init__.py,v $ The ZopeXMLMethods package is a Zope product. Author: Chip Morris <cmorris(a)arielpartners.com> Modified by Philipp von Weitershausen <philikon(a)philikon.de> $Id: __init__.py,v 1.15 2003/03/30 03:45:47 cstrong Exp $ """ __cvstag__ = '$Name: $'[6:-2] __date__ = '$Date: 2003/03/30 03:45:47 $'[6:-2] __version__ = '$Revision: 1.15 $'[10:-2] import XSLTMethod import CacheManager from XSLTMethod import manage_addXSLTMethod, \ manage_addXSLTMethodForm, addXSLTMethod from CacheManager import manage_addXMLMethodCacheManagerForm, \ manage_addXMLMethodCacheManager, addXMLMethodCacheManager def initialize(context): """ Initialize the ZopeXMLMethods product. This makes the object appear in the Zope product list menu. initialize() is called by Zope when starting a Zope server. """ try: context.registerClass( XSLTMethod.XSLTMethod, constructors = ( manage_addXSLTMethodForm, manage_addXSLTMethod, addXSLTMethod, XSLTMethod.XSLTMethod.availableProcessors, XSLTMethod.XSLTMethod.behaveLikeList), icon = 'www/XSLTMethod.gif' ) context.registerClass( CacheManager.CacheManager, constructors = ( manage_addXMLMethodCacheManagerForm, manage_addXMLMethodCacheManager, addXMLMethodCacheManager, XSLTMethod.findCacheManager), icon = 'www/cache.gif' ) context.registerHelp() except: import sys, traceback, string type, val, tb = sys.exc_info() sys.stderr.write(string.join(traceback.format_exception(type, val, tb), '')) del type, val, tb

4 3

Re: [Zope] Strategy for taking site offline temporarily
by Roberto Lupi 18 Feb '05

18 Feb '05

You could use an access rule to redirect non-Manager users to a work-in-progress page; you could set a boolean property on the root folder, check its value before redirecting. In this way, you can turn redirection on and off at will. On Fri, 18 Feb 2005 01:10:59 -0400, David Pratt <fairwinds(a)eastlink.ca> wrote: > What is the best strategy for taking a zope site temporarily offlineso > visitors are provided with friendly message while manager (or other > intermediate manager roles) can still view. -- Roberto Lupi http://www.lupi-software.com/ -- Roberto Lupi http://www.lupi-software.com/

3 2

using database connection inside of python scripts or how to do a d-hoc queries
by Tuttle, Gene 18 Feb '05

18 Feb '05

I have been searching for this answer and not finding it. Inside a python script I want to create insert queries based on the fields returned from a form. I tried creating a database connection object like : dbcon = context.Psycopg_database_connection() Then executing a query like: RS = dbcon.query('select * from customer').dictionaries() this does not work. Can any one point me in the right direction? Thanks Gene

3 2