July 2000 - Zope - Zope lists

RE: [Zope] Patch to DateTime.py
by Brian Lloyd 07 Jul '00

07 Jul '00

> The people who want this site want the local time, not > UTC+0 that strftime > enforces. > > So, I created a tiny patch which adds > _.DateTime().strfltime(), which works > identically, except it passes LOCALTIME instead of GMTIME. > > It's tiny, it's simple, but it's REALLY HANDY! > Curtis - Please submit this to the Collector http://classic.zope.org:8080/Collector/ ...as a feature request w/patch. Patches posted via email tend to get lost in the rushing current of the lists :) Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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delete objet via a form
by FR Chalaoux 07 Jul '00

07 Jul '00

Hi Zopper, The Use case ========== 1/ Display file objets from a folder 2/ Select objets to delete 3/ Delete these objets 4/ Refresh the document My solution is based on 2 DTML methods but it does not work for me. The documents are not deleted and no refresh of the page. Help is welcome. FR. DTML Method delete_form ==================== <dtml-var standard_html_header> <h2><dtml-var title_or_id></h2> <FORM ACTION="http://localhost:8080/Common/Documents/delete" method="POST"> <dtml-in "PARENTS[0].objectValues(['File'])" sort=id> <INPUT TYPE="CHECKBOX" NAME="ids:list" VALUE="<dtml-var id>"> <dtml-var id><p> </dtml-in> <INPUT TYPE="SUBMIT"> </form> <dtml-var standard_html_footer> DTML Method delete =============== <dtml-call "manage_delObjects(REQUEST['ids'])"> <dtml-call "RESPONSE.redirect(URL1 + '/delete_form')">

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Re: [Zope] Which PostGreSQL DA should I use?
by Cary O'Brien 07 Jul '00

07 Jul '00

> On Fri, 07 Jul 2000, Eric L. Walstad wrote: > > OK, I am thinking about going from MySQL to PostgreSQL for its transactions > > and subqueries. I am curious which DA I should use and why. I see that I > > can choose from: > > > > 1. SQLRelay > > 2. ZPoPyDA > > 3. ZPyGreSQLDA > > > > Which are you using and why did you choose it over the others? > > > i have been asking the same Q too. i am current;y using ZPygreSQLDa, and have > been from the start. i think there's no more development done on this DA ( > imight be wrong though). > I wish there was. For ZPyGreSQL, I would really like to see: 1) Thread-safe operation. I.e., if desired, one database connection per thread. Or better yet a pool of connections, allowing m threads, but n (n<m) concurrent PostgreSQL queries. 2) A bit of introspection, i.e. showing the tables and columns. We're getting people who simply can't handle a command line, so they can't really run psql in a separate terminal window. Gadfly DA does this. Any hints/takers. I've looked over ZPyGreSQL pretty carefully -- it isn't all that big. > i wanted to try PoPy, but the last time i checked, i can't get the PoPy tar > ball. this is actively maintained, i think > > SQLRelay, i have compiled and installed, but i can't figure out how to use it. > i cant start the listener without an error.( can't bind something). and i'm > not too sure how how the connect string looks like if i have a user with no > password. but i think this may be the best solution, since we can specify the > connection pool, and have a cache for results too. > Interesting. Gotta look into this. -- cary

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FYI - poss. reindex_object alleged 'bug' workaround
by Jeff Sasmor 07 Jul '00

07 Jul '00

Zopers and PyCoders- I was having a problem with ZCatalog-- namely, editing the properties of a CatalogAware item (in a custom form) after creation resulted in no change to the indexed value in the Catalog. I know about reindex_object and was using that-- so it wasn't just that I was leaving it out! Hmmm. I read the Zope(a)zope.org list archives on zope.nipltd.com (what a great resource, thanks!!!) and found some mentions that this was broken in 2.1.6, which is what I am using. ANYWAY, I found that <dtml-call "_.this.reindex_object()"> solved the problem immediately (well, for me, anyway). Just thought I would pass this on so it would be archived for others with this problem (or at least something to try in a moment of desperation!). Why does this work? I have some guesses about some of the PyCode in CatalogAwarenesss.py but I'm still too much of a Python newbie to make any comments..... Jeff Sasmor jeff(a)janix.com

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FSSession buglette
by Paul Gresham 07 Jul '00

07 Jul '00

Hi All, I had some real problems with FSSession tonight. The first problem was when the FSSession tried to load, it would get an error along the lines of failed to import Acquisition. Next step was when the user session tried to rename and the file wasn't there. This threw in error in a Zope commit transaction, and rendered the site useless until a restart was performed (this was correct action by Zope, i.e. all commits are blocked to avoid the database becoming more screwed after a commit fails). First thing I did was put a try around the dump to stop it from throwing an error if the file doesn't exist. This is certainly a preferred option for us, as it does not affect the function of the FSSession at all (Except that one session is obviously now duff). Second thing in tracking down the culprit, I finally figured out that what I was doing was quite naughty. Basically creating an option for the user to return to the site and have his/her name already entered into the login screen. The mistake was putting AUTHENTICATED_USER into FSSession, it basically tried to store the object, when all I wanted was the string username! Oops! Regards Gresh

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RE: [Zope] Is Zope slow?
by Coleman, Bryan 07 Jul '00

07 Jul '00

Was that Zap or Zope/Medusa. I have run some benchmarks that favored apache serving the same "static" content that Zope/Medusa was serving. - Bryan Patrick Coleman Questcon Technologies (336)273-2428 bcoleman(a)questcon.com > -----Original Message----- > From: Andy McKay [SMTP:AndyM@ActiveState.com] > Sent: Thursday, July 06, 2000 10:15 AM > To: zope(a)zope.org > Subject: Re: [Zope] Is Zope slow? > > > -maybe we could discuss network services/hoster_performance? > > This is more of a problem for most people. One evening whilst bored we > calculated that Zope could happily serve enough people to fill up our > pipe... so the bottle neck is our connection. > > Mind you we'd had a beer or two so calculations could be flawed. > > > > > michael > > drawingincode > > > > > > _______________________________________________ > > 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 ) > > > > > _______________________________________________ > 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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Which PostGreSQL DA should I use?
by Eric L. Walstad 07 Jul '00

07 Jul '00

OK, I am thinking about going from MySQL to PostgreSQL for its transactions and subqueries. I am curious which DA I should use and why. I see that I can choose from: 1. SQLRelay 2. ZPoPyDA 3. ZPyGreSQLDA Which are you using and why did you choose it over the others? Thanks for your time. Eric.

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RE : Redirect when not authenticated
by Frederic Quin 07 Jul '00

07 Jul '00

Hi, I am not sure to understand your problem but maybe you can use the following meta HTML tag which redirect the user where you want... <head> <meta http-equiv="Refresh" CONTENT="0 ; URL=new_url_html"> </head> If the DTML Method containing those lines is in a secured folder, you can add a Proxy Manager Role to your method... I Hope to be helpful Fred

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Re: [Zope] Is Zope slow?
by J. Atwood 07 Jul '00

07 Jul '00

I have a lot of time and exposure to Tomcat so it made it easy for me to run those tests (BTW, now in production, on the same machine Zope is about 3 times faster!) but none really with PHP or Mason. In the end of the day, though, as most of the people have been saying on this list, you really shouldn't be focusing on comparing the raw speed of two totally different applications with different feature sets. I would challenge you to find something as powerful /useful / extendable as Zope written in any language and if you did, we could run those benchmarks. What I *would* suggest focusing on is can Zope provide you with the right amount of features and functionality and can you scale it? So, and god willing, your site that you build in Zope goes from 0-1,000,000 hits a day, can you handle it? The answer is yes (a mix of Pentium, 256 MB Ram and fast drives with Linux will do that). What about if you double that or go to 10,000,000 a day? Well, that is where ZEO and load balancing will come in. I can personally tell you that you could set up four Pentium 300 MHz Zope installations running a ZEO instance behind a load balance (not nearly are complicated as it seems) and you would be able to handle most of your Yahoo dreams. So, keep researching, asking the right questions and looking for those answers but don't get caught up in the benchmarking game too long, it is only one very small piece to the equation. Good luck. J At 10:19 PM -0400 7/6/2000, Firestar wrote: >Thanks for your info. The benchmarks look impressive! However, what would be >interesting is how Zope performs compared to Apache+PHP or mod_perl/mason >and other open-source solutions... >If you happen (and have the time) to compare them, do tell me:) > >regards, >firestar > >------Original Message------ >From: "J. Atwood" <jatwood(a)bwanazulia.com> >To: Firestar <theebh(a)mail.com> >Sent: July 6, 2000 2:55:02 PM GMT >Subject: Re: [Zope] Is Zope slow? > > >No. Not when compared to other applications that do the same *type* of thing >(which there are very very few). > >Check out an interesting set of benchmarks I ran against Zope and Tomcat >connecting to a PostgreSQL database. > >http://www.zope.org/Members/BwanaZulia/benchmarks.html > >J >

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Stability - can you give us some advice?
by tacio＠psmi.com.br 07 Jul '00

07 Jul '00

Hi, I'm new to this list (to Zope too!)and I'm really impressed with its traffic. This show us that this project is in active development. In our company we are currently working to create a Web site with lots of dynamic content, database access, webmail, etc.. so we decided to try Zope. Although it's lack of documentation ( this would not be fair, with a search engine we can dig out lots of useful info from the web) we experienced a very fast development cycle. Now we're concerned about its stability. We are almost finishing the first stage of project and some times Zope hangs. It was working ok, and then, all of a sudden, it just stops answers requests. Last time it happend we changed a DTML Method to a DTML Document and it worked again (if you like i'll try to tell you exactly what was happenning). So, I'd like some advice to make it more stable. ( or tell me what i might be doing wrong) Our environment: OS: Debian GNU/Linux 2.2 (Potato) - Kernel 2.2.16 Plataform: Dual PentiumIII - ASUS motherboard - scsi Adaptec AIC-7892) Python: got from Debian - python-base_1.5.2-10_i386.deb Zope: got from Debian - zope_2.1.6-5_i386.deb DB: Postgresql V7.0.2 - compiled and installed by hand -> tools from Debian, (make,gcc,..) DB-DA: zope-pygresqld 0.3rjr2-1 Front-End: Apache 1.3.12 + mod_ssl + mod_proxy + mod_rewrite (with mm-1.1.3 Shared Memory Library ) Install type : DSO - Dynamic shared Object (compiled and installed by hand -> tools from Debian, (make,gcc,..) Some questions: (with stability in mind..) 1) Should we try Zope 2.2.0b3 instead of 2.1.6 ? 2) Should we avoid using packaged versions of Zope? 3) Should we try ZPoPyDA as a DA to Postgresql? 4) Could you give us some advices on good DTML coding: what should we avoid doing, what is a must, for example, whether or not (or when) to generate urls for objects (http://www.zope.org/Members/jim/ObjectURLs) Thanks a lot for your attention, Tacio AGSantos tacio(a)psmi.com.br

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