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Problem Installing Zope 2.1.3
by Matthew.Stevenson＠student.shu.ac.uk 03 Feb '00

03 Feb '00

Hi I am trying to install Zope 2.1.3 on a linux machine running Suse 6.0. I manage to run the install script ok but when I try to start ZServer I get an error on the last task it is supposed to do (which is start the ZServer Monitor Server). The script halts with the error message of roughly: IOError Errno13 Permission denied on /zopedirectory/var/Z2.pid As far as I can find there is no Z2.pid file in the var directory and I have also used chmod on the directory to try and correct any permssion problems. If anybody can help me I would be very greatful as I hope to use Zope in my University Final year Project. Thanks again, Mat.

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Newbie SQL method problems
by Joseph Kocherhans 03 Feb '00

03 Feb '00

I have a ZSQL method that take 1 input category_id: select * from category_names where id=<dtml-sqlvar category_id type=int> The folder containing the method has a property category_id. If I leave the arguments feild of the SQL method blank then the method displays correctly. However if I put category_id in the arguments feild I get this error: Zope has encountered an error while publishing this resource. Error Type: Bad Request Error Value: ['category_id'] Traceback (innermost last): File C:\Program Files\ecomdev\lib\python\ZPublisher\Publish.py, line 214, in publish_module File C:\Program Files\ecomdev\lib\python\ZPublisher\Publish.py, line 179, in publish File C:\Program Files\ecomdev\lib\python\Zope\__init__.py, line 202, in zpublisher_exception_hook (Object: ElementWithAttributes) File C:\Program Files\ecomdev\lib\python\ZPublisher\Publish.py, line 165, in publish File C:\Program Files\ecomdev\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: index_html) File C:\Program Files\ecomdev\lib\python\ZPublisher\Publish.py, line 102, in call_object (Object: index_html) File C:\Program Files\ecomdev\lib\python\OFS\DTMLDocument.py, line 166, in __call__ (Object: index_html) File C:\Program Files\ecomdev\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: index_html) File C:\Program Files\ecomdev\lib\python\OFS\DTMLDocument.py, line 162, in __call__ (Object: home) File C:\Program Files\ecomdev\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: home) File C:\Program Files\ecomdev\lib\python\DocumentTemplate\DT_In.py, line 630, in renderwob (Object: category_names) File C:\Program Files\ecomdev\lib\python\Shared\DC\ZRDB\DA.py, line 396, in __call__ (Object: category_names) File C:\Program Files\ecomdev\lib\python\Shared\DC\ZRDB\Aqueduct.py, line 149, in _argdata (Object: category_names) Bad Request: (see above) In the ZSQL Method User guide it explains that if a variable is present in the arguments list then Zope looks at the HTTP request first and if it doesn't find the variable it looks at the properties of the method's containing folder. http://www.zope.org/Documentation/Guides/ZSQL-HTML/ZSQL.1.4.4.html#pgfld-91… If I pass the variable category_id in a form or a URL then the SQL method displays correctly. I appears to me (please prve me wrong) that Zope is not performing the second lookup. Has anyone else had a problem similar to this? Please let me know if I am not explaining it well enough. Thanks in advance!

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SybaseDAv2 and stored procedures
by Sascha Matzke 02 Feb '00

02 Feb '00

Hello, is there any way to call stored procedures in a sybase database (11.9.2)? (Just a simple select query) Sascha -- .-> Sascha Matzke - sascha(a)bespin.de - http://www.bespin.de -. | Read the sourcecode, Luke... | | Obi Wan Kenobi | `-- On this earth for 24 years, 112 days <----------------'

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pipedream : fork a dtml-method within zope ?
by chas 02 Feb '00

02 Feb '00

Consider a discussion forum product where a dozen people have already participated in a particular thread. These people, when posting their messages, checked a box which said "email me when somebody else responds/adds to this thread". (Yes, this is nicked from Cold Fusion Forums :-) Now, a 13th person adds his 2 cents to the thread and posts a response. We want to now send a mail to each of the first 12 participants. No problem so far, except mailing all 12 people is going to take quite a bit of time, and contributor #13 is going to get impatient waiting whilst this is happening. Then imagine a discussion thread with dozens of participants/posts. Solutions : a. Write some script to go through the discussion forums looking for such follow ups and mail the previous participants in the discussion thread. Cronjob it. Tiresome/boring and not as instantaneous as I'd like. b. Is it possible in any way to fork that mailing process (which is actually just one dtml method), so that it can be completed without slowing down the rendering of the page ? I'm guessing this is totally beyond zope. Or am I overlooking something obvious ? TIA, Chas

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Re: [Zope] sqlsession
by Anthony Baxter 02 Feb '00

02 Feb '00

Yep. That is all you need to do. If there's anything else that needs changing, well, that's a bug, and I'll fix it. Anthony >>> Graham Chiu wrote > > Anthony, > > I was thinking of using the sqlsession product but some of the column > names you use are reserved in Interbase ( either 'name' or 'value' ). > > Do I just have to change the sqlmethods? > > ------- > Regards, Graham Chiu > gchiu<at>compkarori.co.nz > http://www.compkarori.com/dynamo - The Homebuilt Dynamo > http://www.compkarori.com/dbase - The dBase bulletin > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://lists.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

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RE: zope/style sheets
by Ben Glazer 02 Feb '00

02 Feb '00

> I saw your Nov 1999 post about sensing browser abilities. > > Did you ever get an answer? No, I didn't. :( However, I did come up with a workable (though certainly not elegant) solution on my own. (I hope you don't mind that I'm copying this message to the Zope list -- this might be useful to other people.) What I currently do (which is a bit of a kludge) is check to see whether the client's browser reports itself as compatible with Mozilla/4 or Mozilla/5 (Netscape Navigator, MS Internet Explorer, and Opera all pass this test). All I want to know is whether the browser includes ANY support for CSS, rather than what level of CSS support is provided. Your needs may be different. In case you're interested, the specifics of my implementation follow. I've written an external method called supportsCSS: import re def supportsCSS(self): """Checks (sort of) whether requesting browser supports stylesheets.""" if re.match('Mozilla/[45]', self.REQUEST.environ['HTTP_USER_AGENT']): return 1 else: return 0 Note that the version string test is hard-coded as a very simple regex. This (unfortunately) needs to be kept in mind for future browser changes (e.g. Mozilla 6.0). In my standard_html_header, I include something like: <dtml-if supportsCSS> Supports CSS. (Feel free to include stylesheets, etc.) <dtml-else> No CSS support. :( </dtml-if> Please let me know if you have any questions or suggestions for improvement. Regards, Ben

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Zope Weekly News Rides Again
by Mike Pelletier 02 Feb '00

02 Feb '00

G'day, Zope Weekly News is a digest of some of the useful and interesting events which have occurred on the various Zope mailing lists and the Zope.org site. It is published each Wednesday evening. Any opinions contained in the Zope Weekly News are those of the chronicler exclusively. Suggestions for ZWN items are happily accepted. Please mail them to <mike(a)digicool.com>, put 'ZWN' somewhere in the subject and remember to include URLs. Announcements * ActiveState has announced it will be offering industrial-strength commercial Python support. ActiveState is renowned for their Perl support and development tools. The press release, linked below, includes comments from Paul Everitt. http://www.activestate.com/press/releases/python.htm * Frank Wilson, editor-in-chief at O'Reilly, presently has quite a lot of commentary on the IPC8, Python, Zope and Digital Creations in his "Frankly Speaking" column. http://www.oreilly.com/frank/ * O'Reilly recently launched their new portal, O'Reilly Network. The prestigious first feature is an interview with Paul Everitt, which explores some of the hidden gotchas and bonuses of opening up your software. The interview is available as text and three flavours of audio: High bandwidth RealAudio, low bandwidth RealAudio, and MP3. Nice! http://www.oreillynet.com/ http://www.oreillynet.com/pub/a/network/2000/01/25/interview/index.html * You can now follow ZopeStudio (aka the Zope-Mozilla Initiative) as it evolves by tracking the new ZopeMozilla CVS. For more information, see: http://lists.zope.org/pipermail/zope-announce/2000-January/000102.html * The Zope Portal Toolkit (PTK) is now a Real Live Product, and is also avalialable to be tracked by CVS. See the post in the zope-ptk(a)zope.org list. http://lists.zope.org/pipermail/zope-ptk/2000-February/000111.html * Chris McDonough <chrism(a)digicool.com> reported ZDNet UK's analysis of open source application servers Zope and Midgard. http://www.zope.org/Members/mcdonc/Links/zdnetuk-appserver * Trey Seaver <tseaver(a)palladion.com> announced the commencement of the Zope Guru of the Week "contest". Trey even made the application handling the ZGotW downloadable. http://zope.palladion.com/demos/ZGotW * "jwashin" submitted a "ZClasses Survey/quiz product". It is still undergoing development, and contributions are welcome. http://www.zope.org/Members/jwashin/Survey * Geeknews.org published an interesting interview with Rick Collette, head developer for SPIRO Linux. In it, Rick explains the reasoning behind including Zope as a distribution component. http://www.geeknews.org/features/interviews/spirolinuxinterview.html * Linux Weekly News offered the following link to ZopeNewbies' coverage of the IPC8 and it's Zope Track. Photos! http://weblogs.userland.com/zopeNewbies/ New Releases * Zope 2.1.3 has been released. This update contains fixes for a race condition that could cause Zope to hang on very high-traffic sites, two database packing bugs, and a bug that caused Zope to sometimes hang instead of shutting down when the shutdown function was accessed over a very fast network. http://www.zope.org/Products/Zope/2.1.3/ * "ngps" announced the availability of a very exciting product, "M2Crypto", which allows ZServer (and so Zope) to speak SSL natively. http://www.zope.org/Members/ngps/m2crypto_news * RainDog submitted version 0.0.1 of TTImage. TTImage renders arbitrary text to images on-the-fly. http://www.zope.org/Members/RainDog/TTImage * "haqa" has contributed "Favourite Links", a ZClass-based product which presumably manages a collection of links. http://www.zope.org/Members/haqa/ZLinks Updates and Patches * "kslee" contributed Zope patch which allows you to select from a list of default contents when creating a DTML Method/Document. http://www.zope.org/Members/kslee/DTML_Repository_Patch * "faassen" released version 0.2 of ZFormulator. http://www.zope.org/Members/faassen/ZFormulator/ * "phd" announced that mod_pcgi2 has reached version 1.0.0. http://www.zope.org/Members/phd/mod_pcgi2 * "jephte" updated jcNTUserFolder to version 0.0.2. http://www.zope.org/Members/jephte/jcNTUserFolder * "kslee" spent some time hacking on ZCatalog's splitter.py and the result was Voodoo Kludge Splitter. The splitter is what determines word breaks for full text searches. The Voodoo Kludge Splitter allows full text searches of non-ASCII content, such as Korean, Japanese and Chinese. There are caveats to be aware of. http://www.zope.org/Members/kslee/VoodooKludgeSplitter/ * Evan Simpson <evan(a)4-am.com> has brought his SiteAccess product up to version 1.0.0. This is the first stable release. SiteAccess allows you to use virtual hosting to make non-root Zope objects appear to be the root of your website. http://www.zope.org/Members/4am/SiteAccess * "htrd" contributed a Zope hack which "provides support for wide character strings in ZPublisher, property pages, and property sheets." http://www.zope.org/Members/htrd/wstring * "jules" contributed a HowTo which describes the creation of "Smarter" forms. The idea is to prevent the user from ever having to go "Back" by representing forms with prior inputs already filled in. http://www.zope.org/Members/jules/smarterforms_html/smarterforms_html * Another HowTo from "jules", this one describes auto-starting Zope on boot on a SuSE 6.3 system. http://www.zope.org/Members/jules/SuSE-6.3_html Zope.org items * Chris Petrilli <petrilli(a)digicool.com> has made all the slides from the tutorials he offered at the Zope Track of IPC8 available online. http://www.zope.org/Members/petrilli/Presentations/ * "kusako" contributed a Tip which explains how to catalog a group of properties as though they were one. http://www.zope.org/Members/kusako/AdvancedCataloging * Miklos Nemeth <nemeth(a)iqsoft.hu> submitted "How-To: Using Emacs with Zope on RedHat 6.1". It appears to walk the user through using Emacs as a Zope development environment. http://www.zope.org/Members/nemeth/usingEmacsWithZope * "rbickers" wrote an excellent HowTo on Running Zope on BeOS. The HowTo includes links to a suitable Zope binary. http://www.zope.org/Members/rbickers/Zope_on_BeOS * Continuing a thread, Jeffrey Shell <jeffrey(a)digicool.com> wrote a similar HowTo for MacOS X. http://www.zope.org/Members/jshell/buildingZopeOnMacOSXServer * "jephte" submitted a HowTo describing how to make Zope work in remote user mode (this is, making the webserver deal with Authentication) in conjunction with IIS. http://www.zope.org/Members/jephte/HOWTO/IIS_and_Zope_in_REMOTE_USER_mode * Chris Pertilli <petrilli(a)digicool.com> has started a Z SQL Method FAQ. He is accepting additional questions and answers. http://www.zope.org/Members/petrilli/ZSQLFAQ * Chris McDonough <chrism(a)digicool.com> wrote an EXTENSIVE HowTo describing the process of installing Zope and upgrading an existing Zope installation, complete with screenshots. If you are having difficulty getting Zope off the ground, this looks like the place to start. http://www.zope.org/Members/mcdonc/HowTos/zopeinstall/ZOPE-INSTALL-HOWTO * Miklos Nemeth <nemeth(a)iqsoft.hu> also contributed a HowTo about using the SQL Sessions product. SQL Sessions allows you to store arbitrary per-visitor state in an SQL database. http://www.zope.org/Members/nemeth/usingSQLSession * John Udell <udell(a)monad.net> wrote "How-To: A <dtml-calendar> example", which demonstrates managing per-date data with the <dtml-calendar> tag presenting the interface. http://www.zope.org/Members/judell/CalendarTagExample * "anthony" submitted "How-To: Choosing to store data in SQL vs ZODB". In it, he supplies a number of questions you can ask yourself to determine whether to keep application data in the Zope database or an external one. http://www.zope.org/Members/anthony/sql_vs_ZODB * Miklos Nemeth <nemeth(a)iqsoft.hu> has written another HowTo targeted at RedHat 6.1 users: "Zope and Apache on RedHat 6.1". http://www.zope.org/Members/nemeth/howtos/zopeandapacherh61 * Another Chris McDonough <chrism(a)digicool.com> HowTo: "Using the Zope Debug Log to Track Down Hangs". This HowTo includes a log file analyser. http://www.zope.org/Members/mcdonc/HowTos/DEBUG-LOG * Jim Fulton has made three of his IPC8 presentations available. They are "Introduction to the Zope Object Database", "Acquisition Algebra", and "Zope Architecture". http://www.zope.org/Members/jim/Info/IPC8/ZODB3News http://www.zope.org/Members/jim/Info/IPC8/AqAlgNews http://www.zope.org/Members/jim/Info/IPC8/ZopeArchNews -- Mike Pelletier.

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Re: [Zope] RE: zope/style sheets
by J C Lawrence 02 Feb '00

02 Feb '00

On Wed, 02 Feb 2000 11:33:36 -0800 Sam Gendler <sgendler(a)impossible.com> wrote: > I would like to warn the community about serving multiple pages up > based on the exact same request url (which is what the code below > can contribute to). This doesn't make sense to me on account of cookies. Many sites out there have the content of their pages dynamic on the presence of a specific cookie, without varying the base URL at all. -- J C Lawrence Home: claw(a)kanga.nu ----------(*) Other: coder(a)kanga.nu --=| A man is as sane as he is dangerous to his environment |=--

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RE: [Zope] Zcatalog and random numerical key error
by Michel Pelletier 02 Feb '00

02 Feb '00

> -----Original Message----- > From: - [mailto:kedai@kedai.com.my] > Sent: Monday, January 24, 2000 9:13 PM > To: zope(a)zope.org > Subject: [Zope] Zcatalog and random numerical key error > > > hi all, > > situation: > got a zclass, that is catalog aware. when searches are made, > some return > results, while other times it returns random numerical key > error. i remembered > seeing this symptom on zope.org last year. but it has now > disappeared. > anybody got a clue on what's going on? Your Catalog has gotten out of sync, just click 'Update Catalog' and it will fix itself. It's due to asking for uid of a record that is no longer cataloged. I don't know what could have caused it in your case, probably something in your DTML methods for the ZClass. -Michel

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RE: [Zope] RE: zope/style sheets
by dale w lance 02 Feb '00

02 Feb '00

Ok, so how do we do a temporary redirect? Is this a chicken and egg problem? transparent caches wont fix this because no one uses it, no one uses it because transparent caches don't support it. signed, clueless newbie in zopeland > -----Original Message----- ---------------------SNIP ------------------ > These caches will cache the > first document that it gets > a request for, and then serve it for all subsequent requests. > This means that if a > 3.0 browser grabs this page first, all subsequent 4.0 > browsers will get the non > stylesheet page. This is bad. There are mechanisms built > into http/1.1 (netscape > isn't there yet, and I don't know about Opera) that allow a > server to mark a page as > varying on a particular header (Vary: user-agent, or > something similar), which should > cause a cache to cache different copies of the object for > each user-agent request that > it sees. However, most caches ignore this command, since few > authors do this anymnore > (they learned the hard way). In general, it is best to > detect css support in > javascript, or design pages that work with or wothou CSS > support. In other instances, > if you must do a detection, get the results and then issue a > redirect to the correct > page (make sure it is a temporary redirect, not a permanent > one, since the permanent > redirect is considered a cachable object in most caches). > ------------------ SNIP ---------------------

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