April 2000 - Zope - Zope lists

ANN: Deapleap Product for Zope
by Edd Dumbill 17 Apr '00

17 Apr '00

Hello Zopers, Over the weekend I created a Zope product called DeepleapMetainfo that allows you to easily maintain a deepleap.xml file on your Zope site. This file enables the Deepleap <http://www.deepleap.com/> web application to give the user quick access to things like search and sitemap on your web site. The product includes a form to register your site with deepleap.com. The product is at <http://www.zope.org/Members/edmundd/DeepleapMetainfo> Hope it's of use to someone. -- Edd

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URL treatment, ZServer configuration
by Pierre Rougier 17 Apr '00

17 Apr '00

Hi, In one of my products,my pages are referenced like that: http://localhost:8080/INTRA/?core.html in fact, the query_string is passed as a parameter to an external method in the index_html method of the INTRA Folder. This function takes the html code stocked in a file on the disk and add different things to the HTML code. With that, I only use the index_html method to print the result. My problem is that I would like users to use the following URL: http://localhost:8080/Product/core.html (here, I do not have any query_string) Is it possible to transform this request to use the index_html method of the INTRA Folder with core.html as a parameter? And how? Can I change the ZServer configuration to do it? (the name INTRA is just an example) Thanks, Pierre

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ANN: beehive ZClass Tutorial now in English
by Mark Pratt 17 Apr '00

17 Apr '00

hello all, beehive is pleased to announce its 62-page ZClass Tutorial (with step-by-step instructions and many screen shots) is now available in English. The ZClass Tutorial is the first in a series of commercial Zope tutorials beehive is scheduled to release over the next few months. As Zope continues to undergo rapid development, it is doubtful any real time documentation effort (commercial or community) will be able to cover all new Zope platform features. To help the Zope community, beehive includes in each tutorial price, for 1 year, free updates. beehive is now offering its full 62-page ZClass Tutorial at an introductory price of 25 DM ( At the current exchange rate, this works out to less than $12.50.) ( The price on 17 May 2000 for the full ZClass Tutorial will be 25 US Dollars, each. ) beehive will release its next tutorial in ca. 2 weeks, first in German; and then, ca. 4 weeks later, in English. More info: <a href="http://www.beehive.de">www.beehive.de</a> regards, mark -------------------------------------------------------------- mark pratt (managing director) mark(a)beehive.de beehive elektronische medien GmbH http://www.beehive.de phone: +49 30 847-82 0 fax: +49 30 847-82 299

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Re: [Zope] newbie: Opera, changing users, Windows
by Alexandre Ratti 17 Apr '00

17 Apr '00

Hello Jerry, I had some troubles with ZoneAlarm and Zope. Maybe it's related to the error you described. To run Zope, I had to allow the Zope python.exe file to be a local server (i.e. a server for the local computer and/or your LAN). To do this, check whether you have an entry for python.exe in the ZoneAlarm application list and make sure the "local server" checkbox is checked. Note you need to have an entry for every Zope versions you are running: eg. if you need to run Zope 2.1.2 and Zope 2.1.6, you'll need two python.exe entries in your application list. HTH. Alexandre At 05:45 13/04/2000 -0700, you wrote: >From: "Jerry McRae" <Jerry(a)usd1.com> >Subject: [Zope] newbie: Opera, changing users, Windows, etiquette, active >tutorial >Date: Wed, 12 Apr 2000 12:21:51 -0700 (...) > 3. Living under Windows: I installed 2.1.2, ran through the > tutorials, >created some cool things, then went back to my "real" work for a week. In >that time I installed some new software (including Opera and ZoneAlarm that >deal with communication). Then Zope is broke. I can get the initial >screen, but when I click on Manage, the server falls over and dies with a >*real* long message string starting: >ERROR(200) ZServer uncaptured python exception, >.....ending with >File "C:\Program Files\Zope212\ZServer\medusa\logger.py", line 65, in >maybe_fl >ush > self.file.flush() >IOError: [Errno 9] Bad file descriptor > 3.1. I "solved" this by installing 2.1.6 in a different directory. > 3.2. I have no idea what to do without re-installing. > 3.3. I would like to retrieve the information and site I placed > in the old >version.

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Re: ZClases or Zope Products?
by Alexandre Ratti 17 Apr '00

17 Apr '00

Hi Bob, First, please note I never created any complex product with Zope so I'm no expert. Here is my personal feeling about it: - ZClasses are great to easily create simple products. - When dealing with complex products, use Zope Products, especially if you are a Python developper. Pros of ZClasses - They are fairly easy to create and modify. No need to grok Zope innards. - You can develop and update them through the Web. You don't need file access and you don't need to reboot the server. - They are fairly safe. You're less likely to crash your server with ZClasses. - They are better documented. All in all I feel they are great to create custom versions of build-in object types and simple products (eg. up to 20 Classes). Cons of ZClasses - They still are a fairly young technology. You might run into strange issues. - They make it more difficult to create complex class hierarchies. You cannot easily change base classes, move code and properties around, etc. - Many users feel that DTML is less intuitive than Python. For over a 100 classes you'll probably be much better off with Products. Also, have you considered using Python to create base classes and subclass these classes in ZClasses? I heard it's possible. HTH. Alexandre At 12:00 13/04/2000 -0700, you wrote: >From: "Bob Erb" <Bob(a)InstantAppointment.Com> >To: "Zope Main List" <zope(a)zope.org> >Subject: [Zope] ZClases or Zope Products? >Date: Thu, 13 Apr 2000 14:55:44 -0400 > > My application design lists more than 100 classes. >Is it better to construct the classes as ZClasses or >as Zope Products wrapping Python classes? What should >I consider when choosing between the two approaches? > >-- >Bob Erb >InstantAppointment.Com >(603)930-8836

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Re: [Zope] Zope fine tuning HOW-TO / Zope Performance
by kdie 17 Apr '00

17 Apr '00

-----Original Message----- From: J. Atwood <Jatwood(a)bwanazulia.com> To: kdie(a)nstp.com.my <kdie(a)nstp.com.my> Date: Saturday, April 15, 2000 3:16 PM Subject: Re: [Zope] Zope fine tuning HOW-TO / Zope Performance >This is definitely something I am interested in. > >I have used AB and done a lot of testing on my Zope installation (Pentium >300 MHz, 256 MB Ram, RH 6.1, PostgreSQL) and have found some interesting >facts and figures. I have them all in one big word document that I am >working on making into a Zope.org document. What would be nice is some other >servers, configurations to see if some of my test results hold up. > >I ran about 20 tests but was mainly looking at the Database side of things. > if you can give out what you did(the methods, test scripts, etc), i'd like to test it on my setup and give you the results. we haven't started to use database, but will be soon, like next month or so! so it'd be best to test it before releasing it. . >J > > >> Hi all: >> >> We are relatively new to Zope. I have found problems related to performance >> issues. Even though it is >> known that Apache alone is much faster than Zope, and when migrating (even >> static pages) to Zope a >> performance degradation may be expected, the differentials we are getting are >> very significant. Forget >> it when we add the dynamic parts. >> >> My question is: Has anyone seen a Zope fine tuning guideline. ? It would be >> interesting to have >> something like a cookbook on Tuning Zope and the overall web serving >> environment for specific cases. >> >> I am using RH Linux 6.1, Zope, PostgreSQL...all latest versions. As of >> hardware, at the minimum we have >> Pentium III, 128 MB RAM. As of now, very few hits but slow response though. >> >> Also, any names (URLs) of high traffic sites that are currently running Zope >> and serving dynamic >> content would be appreciated. >> >> Thanks >> >> Felipe >> >> > > >_______________________________________________ >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 )

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about ZClasses (faqs?)
by Marco Mariani 17 Apr '00

17 Apr '00

Good morning! I need to write two zclasses: one representing a photo (with several Images of the same photo at different resolutions) and one representing a catalogaware, objectmanager, article (with several photos of the same object, descriptions etc.) The photo instance should be created from an Image by a python function and the python imaging library, much like the Photo product does. I'd like to understand the following: - why is it dangerous to use External Methods inside a ZC? - what's the difference between Python Methods and External Methods? - may I create and call zclasses from and external method? (me likes syntaks hilite! me small screen! me want vi!) Sorry if I bother you with questions that may have been deeply answered, I didnt' find them in the recent archives. May I gain zen enlightment and give back to the mail list soon. Thanks

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pcgi problems
by Jason Abate 17 Apr '00

17 Apr '00

I've had a Zope-based site up and running with no problems for about nine months, and now am having some strange behavior with pcgi. I am using Apache-SSL with mod_rewrite to server secure Zope pages via pcgi. Occasionally (several times per day) I get error messages from pcgi, including: - 102 - failure during connect - 116 - unable to connect, fd = 8 Whenever these pop up, the secure connection to the site is useless, but I can still connect directly to the ZServer on port 8080 with no problems. I've looked through the pcgi source a little bit, but don't see what would cause this. Any ideas? As a related question, does anyone have experiences good or bad with using theM2Crypto package to setup a secure ZServer? If that works well, I'd just assume cut out the Apache layer and use ZServer directly. Thanks, -jason -- Jason Abate Research and Development Hostway Corporation jason(a)hostway.com

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Re: [Zope] Zope fine tuning HOW-TO / Zope Performance
by kdie 17 Apr '00

17 Apr '00

> >To speed things up: > >1. Do the kind of optimization you'd do in any programming environment. >E.g. move repeated calculations out of loops, etc.. > >2. Rewrite key sections of your DTML in Python should help. > >3. Add caching of results. Sending prerendered data is 5-10 times faster >than sending the DTML that generates the data. This is an especially good >idea if you're dealing with structured text. can someone with the know how give us newbies pointers on how to do this. a how to would be great. > >4. Add HTTP caching headers so your pages get called less. > this too. i tried generating the headers thru apache, but that didn't really turn out right. it seems that my headers are dated in the past, so zope has to render the page again. would doing it from zope help? i looked at zope.org source and see that zope.org generate the headers with dtml. tried copying it but can't get the right date format. it may seem trivial, even a requirement to being a web developer, but not everybody has access to such previleged kowledge. (meaning me :)) tia >-- >Itamar S.T. itamars(a)ibm.net > >_______________________________________________ >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 )

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Problem with upgrade from Zope-2.1.2 to Zope-2.1.6 --- 3nd Post
by Francois-Regis CHALAOUX 17 Apr '00

17 Apr '00

Hi All, Since I upgrade from Zope-2.1.2 to Zope-2.1.6 I HAVE A BIG PROBLEM !!! I create a little application to manage seminars. All the methods to consult these seminars work but all the method to upgrade, create, delete return now ERRORS. My DB is Gadfly. Should I come back to 2.1.2 ? Should I change something in my code? Should I modify Zope-2.1.6? Help, please. FR =========== Environment =========== Linux Suse-6.2 Python 5.2 Zope-2.1.6 upgrade from Zope-2.1.2 with patch Zope-2.1.x-to-2.1.6-linux2-x86.tgz Gadfly =========== Bellow you can find the code of an example and the associated ERROR : ========================== DTML Document saisies.html ========================== <FORM ACTION="insert_seminar_do" METHOD="POST"> Blablabla .... </FORM> =============================== DTML Document insert_seminar_do =============================== Blablabla ...  Blablabla ... ========================= SQL Method insert_seminar ========================= Arguments : titre type jour numero mois annee heure minute nomconf prenomconf titreconf adresseconf lieu nomhote prenomhote url insert into seminar (id, titre, type, jour, numero,mois,annee,heure,minute,floatdate, nomconf, prenomconf, titreconf, adresseconf, lieu, nomhote, prenomhote, url) select max(id)+1, , , ,,, ,, , , ,, ,, , ,,  from seminar ============================= tofltdate is an external method. ============================= import string import sys from DateTime import * def tofltdate(numero,mois,annee): datum = string.join((str(annee) + "/" + str(mois) + "/" + str(numero)) + " 0:00pm US/Eastern" ,'') f = DateTime(datum) return float(f) ######################## Error type: NameError Error value: REQUEST --> </TD></TR></TABLE> </TD> </TR> <TR> <TD BGCOLOR="#6699CC" ALIGN=RIGHT VALIGN=BOTTOM COLSPAN="2" WIDTH="150"><IMG SRC="Images/bottombar.gif" ALT="Curve graphic" WIDTH="150" HEIGHT="26" BORDER="0"></TD> <TD ALIGN=CENTER> <HR NOSHADE SIZE="0"> <p class="footlink" align="center"> <A HREF="http://sbi2.strasbourg.synthelabo.fr:8080/zseminar/insert_seminar_do?pp=1">Printable Page</A>     <A HREF="mailto:fchalaou@stasbourg.synthelabo.fr">Feedback</a>     <A HREF="http://sbi2.strasbourg.synthelabo.fr:8080/zseminar/insert_seminar_do/view_s…">DTML Source</a> </p></TD> </TR> </TABLE> </BODY> </HTML> <!-- Traceback (innermost last): File /opt/zope/Zope-2.1.2/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /opt/zope/Zope-2.1.2/lib/python/ZPublisher/Publish.py, line 179, in publish File /opt/zope/Zope-2.1.2/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: ElementWithAttributes) File /opt/zope/Zope-2.1.2/lib/python/ZPublisher/Publish.py, line 165, in publish File /opt/zope/Zope-2.1.2/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: insert_seminar_do) File /opt/zope/Zope-2.1.2/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: insert_seminar_do) File /opt/zope/Zope-2.1.2/lib/python/OFS/DTMLDocument.py, line 166, in __call__ (Object: insert_seminar_do) File /opt/zope/Zope-2.1.2/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: insert_seminar_do) File /opt/zope/Zope-2.1.2/lib/python/DocumentTemplate/DT_Util.py, line 335, in eval (Object: insert_seminar(REQUEST)) (Info: REQUEST) File <string>, line 0, in ? File /opt/zope/Zope-2.1.2/lib/python/Shared/DC/ZRDB/DA.py, line 424, in __call__ (Object: insert_seminar) File /opt/zope/Zope-2.1.2/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: <string>) File /opt/zope/Zope-2.1.2/lib/python/DocumentTemplate/DT_Util.py, line 335, in eval (Object: tofltdate(REQUEST['numero'],REQUEST['mois'],REQUEST['annee'])) (Info: REQUEST) File <string>, line 0, in ? NameError: (see above) -- >

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