September 2004 - Zope

Zope 2.7 threws many exceptions and dies
by Michael Heidel 01 Sep '04

01 Sep '04

Hi list, we run Zope 2.7.2 final (Python 2.3) on an OpenBSD 3.5 box (P IV 2.4 GHz, 1 GB RAM), started by zopectl. Zope will die up to several times a day. Most times Zope will restart after a while, sometimes it doesn't. Sometimes event.log would show some hundreds of entries per second like -- snip -- 2004-09-01T13:19:52 PROBLEM(100) ZServer warning: server accept() threw an exception -- /snip -- before zope dies. Also we find Cache exceptions - event.log shows: -- snip -- 2004-09-01T11:26:50 PROBLEM(100) Cache ZCache_set() exception Traceback (most recent call last): File "/usr/local/lib/zope/lib/python/OFS/Cache.py", line 215, in ZCacheable_set mtime_func) File "/usr/local/lib/zope/lib/python/Products/StandardCacheManagers/RAMCacheMa nager.py", line 317, in ZCache_set oc.setEntry(lastmod, index, data, view_name) File "/usr/local/lib/zope/lib/python/Products/StandardCacheManagers/RAMCacheMa nager.py", line 111, in setEntry self.entries[index] = CacheEntry(index, data, view_name) File "/usr/local/lib/zope/lib/python/Products/StandardCacheManagers/RAMCacheMa nager.py", line 57, in __init__ raise CacheException('The data for the cache is not pickleable.') CacheException: The data for the cache is not pickleable. -- /snip -- Physical RAM is o.k. TIA, Michael -- Michael Heidel EUC Online Service GmbH HRB Köln 32038 Geschäftsführer Taubengasse 9 Tel. +49 221 58007-20 <mheidel(a)euc.de> D-50676 Köln Fax +49 221 58007-28 Tel.-Durchwahl: -22 Public PgP Key: http://www.euc.de/pgp/mheidel.asc

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Weird things happen when Manager does not have View permission
by Damien Baty 01 Sep '04

01 Sep '04

Hello, I am running through a somewhat weird error. AFAICT, it should not happen. But, well, it does. This involves two folders, an user, a DTML method and a file: / (Zope root folder, which defines 'manager' as Manager) /folder (defines 'Viewer' role) /folder/acl_users (defines 'viewer' user with 'Viewer' role) /folder/method (content is '<dtml-var title_or_id()') /folder/subfolder /folder/subfolder/file All objects belong to "manager". I have defined permissions like this (the one which are not mentioned are default): - '/folder' : "View" and "Access Contents Permission" : does not acquire from parent, only granted to 'Manager' and 'Viewer' roles. - '/folder/subfolder' : as for '/folder'. - '/folder/method' and '/folder/subfolder/file': default (every permission is acquired). When I try to visit http://server/folder/subfolder/file/method as 'viewer', I am asked to authenticate myself, and I am authorized to see the title of the file. Good. But if I unselect the 'Manager' role for the 'View' permission of '/folder/subfolder', user 'viewer' is now unauthorized. Error is: 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 OFS.DTMLMethod, line 130, in __call__ <DTMLMethod instance at 91df560> URL: http://server/folder/method/manage_main Physical Path:/folder/method * Module DocumentTemplate.DT_String, line 474, in __call__ Unauthorized: You are not allowed to access 'title_or_id' \ in this context I do think that it is not supposed to happen. But before digging a little deeper to try to find out where the error comes from, I wanted to be sure. Any clues? I am running a clean install of Zope-2.7.2 and Python2.3. -- Damien Baty - damien(a)pilotsystems.net Pilot Systems - 66, rue de Provence - 75009 Paris Tel : +33 1 44 53 05 55 - http://www.pilotsystems.net Hébergement Zope et Plone gratuit - http://www.objectis.org

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proxy tool for Zope/Plone
by Max M 01 Sep '04

01 Sep '04

I need to integrate a few external .asp based web tools into a plone site. Instead of recoding them and converting them to Zope products, I want to do it by "importing" them into Page templates. What I need is basically to browse another webpage through a Plone Page template, so that I can keep the look and feel of the Plone site. Just as if I jused frames or iframes. I have made something similar in the past, but not as complete. I can see this as a usefull tool in many situations. So I wondered if anybody has done something similar allready, and have any experiences they want to share. I especially wondered if there would be an advantage to using Squid/Apache as a middle layer, so that I wouldn't have to do the url rewriting myself :-s Any knowledge of documentation/pitfalls would also be appreciated. regards Max M

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Seeking CA Bay Area Zope/Plone Developer
by Steven Hertzberg 01 Sep '04

01 Sep '04

Our organization, Votewatch (www.votewatch.us) is looking for a single developer/tech-lead/PM with 3+ years of zope/plone experience who can work from our offices in Burlingame with an excellent remote (U.S.) development team that is already in place. Applicants must be very familiar with open source environments including PHP/MySQL, Zope/Plone, Apache, CMF and must have XHTML/CSS knowledge/experience. Useful experience would include: - Zope network design across clustered high load environments - Zope server administration - Experience with ZEO and ZRS deployments We are looking for someone with good communication skills and a team player. Please reply by email to [job at votewatch dot us] with your resume and your availability through November 2004. ABOUT US: http://www.votewatch.us Votewatch is a non-profit, non-partisan organization that works to ensure that the voices of ordinary people are heard in America’s democratic process. Using input from volunteers on election day to support data-driven analyses of election results, Votewatch allows ordinary citizens, activists and legal experts the means to work in partnership to challenge – prior to the certification of election results – questionable election outcomes as well as the accuracy of new voting technology. Thanks. ________________________________ The Votewatch Team http://www.votewatch.us Your Eye on Elections --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com) Version: 6.0.745 / Virus Database: 497 - Release Date: 8/27/2004

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RE: [Zope] Zsql and dtml --- newbie
by Jim Abramson 01 Sep '04

01 Sep '04

you don't need dtml-var inside another dtml tag... so for one thing you'd have to change: <dtml-call "SAS.queries.add_key_working(key=<dtml-var sequence-key),value=<dtml-var sequence-item>> to: <dtml-call "SAS.queries.add_key_working(key=key,value=_['sequence-item'])"> But there's another thing...you probably don't want everything in REQUEST.form.items()....this is going to include, at the very least, your submit button's name and value, which you probably don't want in your db. Better off checking explicitly for the input names you used in the html form. Jim -----Original Message----- From: Tuttle, Gene [mailto:cetuttle@rottlundhomes.com] Sent: Wednesday, September 01, 2004 2:27 PM To: zope(a)zope.org Subject: [Zope] Zsql and dtml --- newbie I am have trouble understanding how this should work. I have a form that has dynamic fields on it. the number and name are variable. I would like to store these in a working table in a database. The table has two fields and I have a ZSQL method to update the database : select add_key_working('<dtml-var expr="_.SecurityGetUser().getUserName()">', <dtml-sqlvar key type="string">, <dtml-sqlvar value type="string">); I try this and it does not work <dtml-if submit>  <dtml-in "REQUEST.form.items()" sort> <dtml-call "SAS.queries.add_key_working(key=<dtml-var sequence-key),value=<dtml-var sequence-item>> </dtml-in> </dtml-if> it is not valid DTML How do I get the values into the query. Thanks Gene Tuttle _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )

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[Warning] Strange mountpoint behaviour
by Dieter Maurer 01 Sep '04

01 Sep '04

I strugged today with a strange mounting problem: A colleague wanted to mount a storage under path "a" which has been formerly created while mounted under a path "b". Result: unless "a" and "b" are equal, the mounted object under "a" was empty. The analysis lead to http://collector.zope.org/Zope/1487 The mount-point documentation in "Zope/Startup/zopeschema.xml" is incomplete. The implemented behaviour unintuitive. You want to use "mount-point" specifications of the form "virtual_path:real_path" and not "path" (as the documentation suggests). -- Dieter

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Zsql and dtml --- newbie
by Tuttle, Gene 01 Sep '04

01 Sep '04

I am have trouble understanding how this should work. I have a form that has dynamic fields on it. the number and name are variable. I would like to store these in a working table in a database. The table has two fields and I have a ZSQL method to update the database : select add_key_working('<dtml-var expr="_.SecurityGetUser().getUserName()">', <dtml-sqlvar key type="string">, <dtml-sqlvar value type="string">); I try this and it does not work <dtml-if submit>  <dtml-in "REQUEST.form.items()" sort> <dtml-call "SAS.queries.add_key_working(key=<dtml-var sequence-key),value=<dtml-var sequence-item>> </dtml-in> </dtml-if> it is not valid DTML How do I get the values into the query. Thanks Gene Tuttle

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Re: [Zope] Lost the path to my DTMLFile in my product
by Jonathan Cyr 01 Sep '04

01 Sep '04

Yeah, I know.... I moved my product from Windows to Linux... and the globals() parameter used in Globals.DTMLFile is still using my Windows setup to determine the Path for my Zope Products DTML resources. How do I get Zope to update this global and look at the linux filesystem. The usage of the DTMLFile calls for a relative folder definition, which I have, it's "base" path is defined by Zope. New instances pick up the correct path, imported "old" instances do not... this would be a big problem when I want to move this setup to the next machine. -Jon Cyr cyrj(a)cyr.info The Count wrote: On Tue, 31 Aug 2004 13:06:25 -0500, Jonathan Cyr <cyrj(a)cyr.info> wrote: > Hello, > > When I moved my environment to Linux, Zope is still looking on my old > heirarchy. different OS have different ways to handle - new lines (i.e. '\n' || '\r\n' - filepaths (i.e. 'C:\' || '/usr/local/src/') > > Error Log Snippet: > > 2004-08-31T07:23:24 PROBLEM(100) ZPublisher DTML file > 'C:\Apollo1-Zope-271\Products\WWWedding\dtml/index_html.dtml' could > not be read this aint on linux? : ^^^ ^ ^ ^but^^^ : this is! Probably you've got the location hardcoded into the source? Or you append "\" by default?

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TALs difficulties
by Johan Carlsson 01 Sep '04

01 Sep '04

Hi, I need help :-) I'm trying to implement a new Widget for Archetypes. So I have to write TAL (not my favorite hobby). I'm extending the multi select widget with optgroup labels. But I can figure out how to make the <option> contained by the <optgroup> without breaking the XML code. And I don't want to change the data format that's used (which is a sub classed version of Archetypes DisplayList that can mark items as optgroup labels, indicated with a true value from isLabel). Here's what I've settled for so far: vocab is the DisplayList derivative (item is a key). <tal:loop repeat="item vocab"> <optgroup tal:attributes="label python:vocab.getValue(item);" tal:condition="python:vocab.isLabel(item)"> </optgroup> <option selected="" tal:condition="not:python:vocab.isLabel(item)" tal:attributes="value item; selected python:test(here.unicodeTestIn(item, value), 'selected', None);" tal:content="python: vocab.getValue(item)"/> </tal:loop> Returns something like this: <optgroup label="A"></optgroup> <option>Ada</option> <option>Ape</option> <optgroup label="B"></optgroup> <option>Bananas</option> <option>Buffy</option> What I want is: <optgroup label="A"> <option>Ada</option> <option>Ape</option> </optgroup> <optgroup label="B"> <option>Bananas</option> <option>Buffy</option> </optgroup> Which renders quite differently. Best Regards, Johan

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Re: [Zope] Weird things happen when Manager does not have View permission
by Johan Carlsson 01 Sep '04

01 Sep '04

Damien Baty wrote: > I do think that it is not supposed to happen. But before digging a > little deeper to try to find out where the error comes from, I wanted to > be sure. Any clues? > > I am running a clean install of Zope-2.7.2 and Python2.3. Hi Damien, I've reproduced your problem. Changing the owner of /folder (and there by all the others) to viewer lets viewer access title_or_id. title_or_id is published with __allow_access_to_unprotected_subobjects__ in SimpleItem:Item. It seems like the owner of an object with "unprotected subobjects" needs to have View permission for the "unprotected subobjects" to be accessable to the world. Methods declared __allow_access_to_unprotected_subobjects__ is very similare to being declared public I guess? Cheers, Johan Carlsson

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