October 2005 - Zope - Zope lists

NameError in Zope Tutorial Lesson 8
by Norbert Kaufmann 10 Oct '05

10 Oct '05

Hello listmembers, I am fairly new to Zope and turning debugging on and googling a lot does not lead me to the solution of the problem. Learning Zope I got this error trying out lesson 8(cont.): <--snip--> Error Type: NameError Error Value: global name 'title' is not defined <--snap--> Zope version: 2.7.7 Python: 2.3.5 OS: FreeBSD 4.11-STABLE Please can anybody give me a hint. I simply can't await to get my Elvis Photo Archive up and running. TIA Norbert

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How to make a table with sortable colmns?
by Thomas Apostolou 10 Oct '05

10 Oct '05

Hello all, i am using the following to get some data from Database and show them in a table: <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-7"> </head> <style type="text/css" media="screen"></style> <style type="text/css" media="screen"></style> <style type="text/css" media="all"></style> <dtml-var standard_html_header> <table id="sortable" class="listing" summary="Content listing" cellpadding="0" cellspacing="0"> <thead> <dtml-in expr="GetHeader(sysDSN=sysDSN, usr=usr, mypass=mypass, sTable=sTable)"> <th class=""> <dtml-in sequence-item>  <dtml-var sequence-item>  </dtml-in> </th> </dtml-in> </thead> <dtml-in expr="GetData(sysDSN=sysDSN, usr=usr, mypass=mypass, sTable=sTable)"> <dtml-if sequence-even> <tr class="even"> <dtml-else> <tr class="odd"> </dtml-if> <dtml-in sequence-item>  <td><dtml-var sequence-item></td> </dtml-in> </tr> </dtml-in> </table> <dtml-var standard_html_footer> But how can i tell the table to sort the column i click on just like plone does with the members list? Thanks in advance Thomas Apostolou ___________________________________________________________ Χρησιμοποιείτε Yahoo!; Βαρεθήκατε τα ενοχλητικά μηνύματα (spam); Το Yahoo! Mail διαθέτει την καλύτερη δυνατή προστασία κατά των ενοχλητικών μηνυμάτων http://login.yahoo.com/config/mail?.intl=gr

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reading zope.config file for ClientStorage
by Mika, David P (Research) 10 Oct '05

10 Oct '05

To initialize ZEO clients with ClientStorage I need info such as host, port, etc. All the needed stuff is tucked away nicely in the zope.config file and I would like to be using the zope machinery access it. I know that what I need is in there somewhere, but when I try to follow how it happens in say the Zope startup, I get lost in all the dependencies and my head starts swirling. I would like to be able to use something like is in ZODB/config.py: class ZEOClient(BaseConfig): def open(self): from ZEO.ClientStorage import ClientStorage # config.server is a multikey of socket-address values # where the value is a socket family, address tuple. L = [server.address for server in self.config.server] return ClientStorage( L, storage=self.config.storage, cache_size=self.config.cache_size, name=self.config.name, client=self.config.client, var=self.config.var, min_disconnect_poll=self.config.min_disconnect_poll, max_disconnect_poll=self.config.max_disconnect_poll, wait=self.config.wait, read_only=self.config.read_only, read_only_fallback=self.config.read_only_fallback, username=self.config.username, password=self.config.password, realm=self.config.realm) here BaseConfig has that bit of magic that has self.config. I guess I need to know how to instantiate this class. Any ideas? David P. Mika

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MailTemplates 1.0.0 Released!
by Chris Withers 10 Oct '05

10 Oct '05

These allow you to use the full power of the the python email package along with Zope's Page Template technology to easily build and send fully standards compliant emails. The key feaures are: - Use familiar ZPT syntax to generate both plain text and html email - Easily create multi-part messages including the attachment of files - Flexible and powerful ways to specify addresses and headers for email to be sent - Full access to Python's email package from restricted python code such as python scripts - Fully integrated with CMF-based products by way of Filesystem-based MailTemplates This is the first public release of MailTemplates following several months of testing and development. For more information, please see: http://www.simplistix.co.uk/software/zope/mailtemplates cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk

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Write log file from script
by Brian Sullivan 10 Oct '05

10 Oct '05

I am looking for a simple strategy to write a debug log file from a python script. I used to have such a beast but somewhere in a shuffle it got lost -- and my brain seems to be dead this morning trying to figure it out. Anybody out there have something like this or a url explaining how to do it?

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Re: [Zope] INSTALLING gcc (and ZOPE) on DEBIAN
by benmania＠web.de 09 Oct '05

09 Oct '05

> Because that, I assume > that I have to kill certain processes in order to get more free swap - > am I right? > Probably not, no. Why not? I dont understand - killing processes does not mean getting their space? > > But what processes am I allowed to kill? Are there any processes that are absolutely neccessary? > > Only the ones you have started. I do not understand your answer at all. So I cannot kill any processes that are running on my Vserver (since I have not started any of them)?!? But do you advise me to do? ______________________________________________________________________ XXL-Speicher, PC-Virenschutz, Spartarife & mehr: Nur im WEB.DE Club! Jetzt gratis testen! http://freemail.web.de/home/landingpad/?mc=021130

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Method cache (Memoize) for Zope
by Max M 09 Oct '05

09 Oct '05

Has anybody written a Memoize-like decorator for Zope? I imagine that it could be a nice feature to have a standard decorator for Zope that would cache results in a _v_ volatile variable. I usually do it a bit like this:: def _cache_it(self, meth, *args, **kwargs): cache_name = '_v_%s' % meth.__name__ if not hasattr(self, cache_name): result = meth(*args, **kwargs) setattr(self, cache_name, result) return getattr(self, cache_name) def _some_function(self): # do expensive calculations and return result return 42 def some_function(self, *args, **kwargs): "Returns cached values" return self._cache_it(self._some_function, *args, **kwargs) But I guess that there must be someone who has allready written a more generic way to do it via generators? -- hilsen/regards Max M, Denmark http://www.mxm.dk/ IT's Mad Science

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ooops... ZMYSQL tests fail in the ZMI on batching dynamic queries
by Dennis Allison 09 Oct '05

09 Oct '05

Sorry for the long message, but there's a lot of context. I've tried to factor the problem out and then provide supporting stuff for the interested. Zope 2.7.6, Python 2.4.1 (Python 2.3.5 behaves in the same fashion). In summary, the problem is that a query run as a test from the ZMI of the form select * from <dtml-var udb>.tablename fails on the second batch whereas select * from foo.tablename works fine for all batches. The relevant Zope code distributed with Zope 2.7.6-final had a bug in it which was discussed earlier on the list. The distributed code did not terminate batching properly. The problematic code was in /home/allison/Zope-2.7.6-final/lib/python/Shared/DC/ZRDB/dtml and the fix was to patch the two link expressions to have a missing element, that is, <a href="&dtml-URL;?query_start=&dtml-next-sequence-start-number; \ &query=<dtml-var query url_quote missing="">"> which seemed to resolve the problem. BUT, there is now a second problem. When the query is dynamic, the second batch fails on a key error -- for the example above, it would fail with a > Z SQL Method at /testfolder/batchcheck External Editor > > Help! > Error, exceptions.KeyError: 'udb' SQL used: > > Could not render the query template! message in the ZMI. However, REQUEST has the proper value for the key according to the Error Log: form query "''" query_start '21' other n_ 5 a_ 0 It's pretty clear that the query is being passed as an empty string due to the key error. Presumably the query should be rendered and saved in a persistent manner throughout the batching process. It is not clear to me where this should be done. Any help in localizing and fixing the problem would be appreciated. -d For the record, the original posting is appended >From allison(a)shasta.stanford.edu Sat Oct 8 10:52:32 2005 >Date: Tue, 7 Jun 2005 03:41:21 -0700 (PDT) >From: Dennis Allison <allison(a)shasta.stanford.edu> >To: zope(a)zope.org >Subject: Z SQL test in the ZMI aborts on key error > >Zope 2.7.6 >Python 2.3.5 >MySQLDA-1.2.1c3 >ZMYSQLDA-2.09b3 > > >Site Error > >An error was encountered while publishing this resource. > >Error Type: KeyError >Error Value: 'query' > >Troubleshooting Suggestions > > * This resource may be trying to reference a nonexistent object or >variable 'query'. > * The URL may be incorrect. > * The parameters passed to this resource may be incorrect. > * A resource that this resource relies on may be encountering an >error. > > >---------- >Error log: > > 2005/06/07 03:33:03.344 GMT-7 >User Name (User Id) allison (allison) >Request URL http://group1.agilemind.com/Scratch/simpleq/manage_test >Exception Type KeyError >Exception Value 'query' > >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 Shared.DC.ZRDB.DA, line 337, in manage_test > * Module DocumentTemplate.DT_String, line 474, in __call__ > * Module DocumentTemplate.DT_In, line 602, in renderwb > * Module DocumentTemplate.DT_Var, line 219, in render > >KeyError: 'query' > > >There does not seem to be a bug like this in the collector. > >Any help/pointers appreciated

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How to prevent web access to specific folder ?
by Vladimir Petrovic 08 Oct '05

08 Oct '05

In my application built on top of Zope, there is a folder scripts/ which contains various python scripts. Some of these scrips invoke SQL methods and accept parameters. The DTML method (outside the scripts/ folder) calls first scripts to set parameters and then scripts which invoke SQL methods passing correct parameters. However, if users can call directly scripts with HTTP request to zope, they can pass any parameters they like. So, for security reasons it is important to deny "direct" access to scripts/ folder. Also, manager should be able to normally manage this folder from ZMI. I know this can be done by restricting View/Access Contents information privileges for folders/scripts to the specific role and then giving DTML methods proxy role. But, is there any other easier methods ? I've tried using access_rule, but the is to allow ZMI to work. At the time when access_rule is called user is not authenticated, so I cannot check if the current user is manager on not. If anybody has any ideas, I'll be gratefull, Vladimir

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python: calling DTML-methods without quoting
by Chris 08 Oct '05

08 Oct '05

Hi, I hope this is not a FAQ, but I looked for some info to no avail. If I call a DTML-Method from an other Method (e.g. <dtml-var someDTML>), HTML entities are not converted. However if I call it from python (e.g. <dtml-var "somePath.someDTML"> the entities are html_quoted. This changed with Zope 2.7.x (?). Before that DTMLMethods were not quoted when called from python. I know the easy workaround is to dtml-with to the namespace of the object and call it the zope-way. I have a customer with several large applications which run on an old Zope only for the described reason. The applications relay heavily on calling DTML-Methods to include pieces of HTML, JavaScript, etc. Changing the old code would be an enormous effort. Is there a way to patch zope to show the old behavior? Regards Chris

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