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the joy of hacking ZPublisher
by Jim Abramson 18 May '05

18 May '05

In my Zope 2.7 Product, I'm trying to implement a special folder, which intercepts the publishing call to any subobject and wraps the entire call in another. A concrete example: where the default action would be to traverse /MyProduct/SpecialFolder/something, and publish the attr 'something' from SpecialFolder, I want this to happen instead: doSomethingBeforeCallingTheRequestedObj() try: return mapply( something, blahblah...) finally: doSomethingAfterCallingTheRequestedObj() Why? I need to do stuff to the REQUEST before the object is called (this part wasn't difficult), and then do something *after* it's called - no matter what the results were. But only for publishables that live in or beneath the Special Folder. In fact I have something working, but one big problem - it breaks management screens in a bad way. The implementation is pasted below. Is there some much simpler way to accomplish this behavior? And am I short-circuiting security machinery in some dangerous way? class Wrapper(Implicit): """voodoo""" id = meta_type = title = "Wrapper" def __init__(self, publishable): self.pub = publishable def index_html(self): """ render the results to the client """ REQUEST = self.REQUEST print self.__class__.__name__, 'calling', self.pub try: return mapply(self.pub, REQUEST.args, REQUEST, call_object,1, missing_name, dont_publish_class, REQUEST, bind=1) finally: print self.__class__.__name__, 'done' print '' print '' __call__ = index_html Globals.InitializeClass(Wrapper) class SpecialFolder(Folder): def __bobo_traverse__ (self,REQUEST,key): print '__bobo_traverse__', REQUEST.URL, key stack = REQUEST['TraversalRequestNameStack'] target = getattr(self,key) if stack: return target return Wrapper(target).__of__(self)

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zopewiki news for april
by Simon Michael 18 May '05

18 May '05

*About the Zopewiki project* zopewiki.org aims to be a simple, comprehensive, user-maintained repository for Zope documentation, notes and links - a hitch-hiker's guide to Zope. See http://zopewiki.org for more. *News* In april, the wiki seemed to come alive due to the number of different people editing (10, as a rough guess). There has been a fair amount of cleanup activity in recent weeks. Some anti-spam measures were installed and there have been no spam incidents recently. This impacts users, however: you will not be allowed to add external links until you have configured a username at http://zopewiki.org/ZopeWiki/useroptions . At the moment this is not spelled out explicitly. The mirrored ZopeBook content has been removed in favour of links to the master copy at plope.com. There is a page linking to each chapter, which might serve for annotation/discussion of the chapters as long as backtalk comments are disabled. For more, see http://zopewiki.org/ZopeWikiNews http://zopewiki.org/ZopeWikiDiscussion http://zopewiki.org/WikiStats

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Zwiki 0.41 released, news for april
by Simon Michael 18 May '05

18 May '05

Seems I'm never going to finish this.. just *post* it! *What is it ?* Zwiki is a Zope product for building wikis - a special kind of website that's easy for anyone to edit. Zwiki was started in 1999 by Simon Michael and now receives improvements from many contributors. It is released under the GNU GPL. A new version is released on the first of the month. See http://zwiki.org for more. *0.41 release summary* Some anti-spam features, skin fixes and translation updates. Full release notes are below. *Zwiki news this month* Development activity, contributors Translation updates from T.C. Chou (chinese) and Gaspar Quiles (spanish), and a number of fixes from Jens Nachtigall. Thank you! Bug reporting & closing activity bug day on the first friday of the month Documentation activity reorganized front page UsersGuide and AdministratorsGuide are fairly complete and accurate old docs have been demoted to *Notes and linked less prominently Discussion New zwiki-edits list and mail setup new anti-spam features installed (no external links by unidentified users, delayed indexing); no spam since As a reminder, experimental rss links are available, linked on the FrontPage. They are .../pages_rss - new pages in this wiki .../changes_rss - recent edits in this wiki *Links* http://zwiki.org - Zwiki home, with all download, documentation & discussion links http://zwiki.org/ZwikiFunding - how to donate or sponsor a feature ------------------------------------------------------------------------ *Release notes* Summary Some anti-spam features, skin fixes and translation updates. Upgrade notes Translations may be somewhat in flux this release. Configuring * restrict external links: if a max_anonymous_links int property is defined, edits from unidentified users (with no username) containing more than that number of http:// links will be refused and logged * delayed indexing: pages now include the NOINDEX meta tag for 24 hours after an edit, to reduce the chance of spam links being indexed by search engines. Browsing * show page source links when using thorough search, to help with spam cleanup Mail * make subscribe form help reflect the comments/edits mailout policy (Jens Nachtigall) * AnonymousUserSubscriptionInPlone (Jens Nachtigall) fixes #878 anonymous subscription in cmf/plone subscribes "Anonymous User" * br_for_subscribed_pages_list_on_subscribeform (Jens Nachtigall) If one is subscribed to several pages, theses pages are on the same line, which looks confusing. Now it is done as with the page_subscribers list on the very same subscribeform, ie an " " is inserted between each page name. General - i18n * regenerate pot and po files, and this time with up-to-date Default comments (#1093, SM, Jens Nachtigall) * mark_PREVIEW_as_translatable (Jens Nachtigall) * chinese translation updates (T.C. Chou) * spanish translation updates (Gaspar Quiles) General - skins * subscribeform_remove-unneccessary-span-tags (Jens Nachtigall) * new api method: lastEditIntervalInHours

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Running out of sockets
by Gaute Amundsen 18 May '05

18 May '05

Coming out of lurk mode here with a really tricky one. We had just moved our server from: Zope Version (unreleased version, python 2.3.3, linux2) Python Version 2.3.3 (#2, Feb 21 2004, 21:17:53) [GCC 3.2.2 20030222 (Red Hat Linux 3.2.2-5)] To: Zope Version (Zope 2.7.5-1.fc3, python 2.3.4, linux2) Python Version 2.3.4 (#1, Feb 2 2005, 11:44:49) [GCC 3.4.3 20041212 (Red Hat 3.4.3-9.EL4)] The first thing we noticed was: Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET /xp/pub/topp/invest/. Reason: Error reading from remote server Apache/2.0.52 (Red Hat) Server at www.foo.bar Port 80 ( We are running a homegrown virtual host product very similar to the "virtual host monster" behind apache via rewrites. No ZEO.) This seems to corespond to a lot of: PROBLEM(100) ZServer warning: server accept() threw an exception in the log. Restarting zope has fixed it for now, but "lsof -a -U -uzope" and "lsof -uzope | wc -l" Shows the number of open sockets steadily growing, and apparently none closing.. We have not seen the Proxy Error again yet, but it seems pretty certain sockets will run out at some point. What to do? Where to dig? I have found quite a number of references to similar problems by googling parts of this, but nothing leading me closer to figuring it out. "ulimit -a" shows the limit is 1024 ( at 1004 now everything seems fine except the occasional PROBLEM(100) XPTopic seemingly unrelated, not accept() ) "netstat -axp" gives me loads of lines like this: unix 2 [ ] STREAM CONNECTED 2792969 572/python We have tried various combinations for config options, but without any luck: "force-connection-close on" did not seem to make any difference "max-listen-sockets 500" did not keep "lsof -a -U -uzope | wc -l" from exceeding 500. maximum-number-of-session-objects 10000 session-timeout-minutes 90 This should not be related no? I realize this is becoming a very rambling question, I just thought I would include as much info as possible right away :) Regards Gaute Amundsen

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Adding zclass inside folder with python
by Anthu Nguyen 18 May '05

18 May '05

Hi, I've tried everything I can think of and am probably missing something obvious - help... I'm trying to (1) Create a folder, then (2) Add a new zclass inside that folder. Instead, the zclass is being added in the same space as the folder: - What I want: New Folder New ZClass - What's happening: New Folder New ZClass =========== The code that doesn't work: request = context.REQUEST pbuildid = request.pbuildid # Add a new folder with id=pbuildid context.manage_addFolder(id=pbuildid) # Add a new instance of the ZClass inside new folder instance = context.pbuild.createInObjectManager(request['id'], request) instance.propertysheets.pbuild_properties.manage_editProperties(request) =========== TIA, AnThu Nguyen

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VirtualHost
by Brian Hickey 18 May '05

18 May '05

Hi all, Having a bit of trouble with virtual hosting, but I'm guessing the answer is probably simple. My Zope instance is running on a different machine to my apache server. I have created a Plone instance, and everything was working fine, accessible from port 8080 as standard. I wanted Apache to rewrite so that my Plone instance is available from www.mydomain.com/public/. So I added the following to my httpd.conf and restarted apache (after following the guide at http://www.zope.org/Documentation/Books/ZopeBook/2_6Edition/VirtualHosting.…) RewriteRule ^/public(.*) http://111.111.111.11:8080/VirtualHostBase/http/www.mydomain.com.ie:80/Plon… [L,P] Plone now works fine when accessed from www.mydomain.com/public/ However, I can no longer access my Zope instance from the browser. If I go to http://111.111.111.11:8080/ (which was working before), I get a "Cannot find server - Page cannot be displayed" error. In Firefox, I get "The connection was refused when attempting to contact 111.111.111.11". Obviously Zope is running, as Plone can be viewed through the rewrite. Also, if I ssh into the server on which Zope is running, I can use it through lynx on the localhost (i.e. lynx http://localhost:8080/manage) Restarting Zope has had no effect. Any ideas? Thanks in advance, Brian

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small tal tip needed.
by prabuddha ray 18 May '05

18 May '05

-- Share the vision of difference with ME

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RE: [Zope] Seeking advice on Zope implementation
by Dan Pozmanter 17 May '05

17 May '05

"In Zope 3 you can turn off as many unwanted features as you like" That sounds really cool. How so? (Is there a tentative list of all zope 3 services? Do you need to run all of them?) -----Original Message----- From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] On Behalf Of Stephan Richter Sent: Tuesday, May 17, 2005 11:02 AM To: zope(a)zope.org; pythonic Subject: Re: [Zope] Seeking advice on Zope implementation Hi, it all depends what your app is like. Can you describe it some more? On Tuesday 17 May 2005 10:03, pythonic wrote: > 1. Startup custmization: How can one configure zope to load instance > of this as product (my application) on the startup but not the ZMI and > other zope stuff. In Zope 3 you can turn off as many unwanted features as you like. So from this point of view Zope 3 would be good. > 2. We want to generate xml using ZPTs and then apply xsl. Is the > server side transformation supported? Why? You first use ZPT to create XML and then an XSLT engine to create HTML. This seems like a slow approach to me. ZPT can generate HTML right away, which is much faster. Unless you already have your content in XML, an XSLT engine is total overkill. > 3. Is there any good doc available that describes how to do things you > do in ZMI programmatically? Zope 3 does not rely as heavily on the ZMI as Zope 2 and in fact all code is developed on the filesystem, so in this case it might be better for you. > 4. Zope 2.7 / 3 ? I think you should go with Zope 3. Several projects have already successfully integrated their Pyton code into Zope 3. Regards, Stephan -- Stephan Richter CBU Physics & Chemistry (B.S.) / Tufts Physics (Ph.D. student) Web2k - Web Software Design, Development and Training _______________________________________________ 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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upload folder contents
by garry saddington 17 May '05

17 May '05

If a set of web pages is generated by for instance the output of a Docbook transformation or by the new eXe XHTML editor, is there any way of uploading all the resulting pages into Zope in one go and maintaining the individual file names so that links remain working. I want users to be able to generate content locally and then upload to a Zope server, so products like FileSystemSite are not suitable. This product also changes the filenames so that links are broken. regards garry

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WebDAV Locked Item Unlockable
by hpinson＠indepthl.com 17 May '05

17 May '05

Hi. How do I unlock a locked WebDAV item (in this case a ZPT) edit with Dreamweaver MX. The locked item does not show up on the Control Panel > WebDAV Lock Manager, and the lock even survives a Zope restart. All attempts to edit or remove the item fail. This seems to be happening on a regular basis in my Zope 2.7.4 / FC3 install when editing content through Dreamweaver MX WebDAV. Thanks. Harlow Pinson Indepth Learning Email: hpinson(a)indepthl.com Web: http://www.indepthl.com Voice: 505-994-2135 FAX: 208-475-7678

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