May 2004 - Zope - Zope lists

joining/leaving a Version through URL
by Michael A. Ruberto 21 May '04

21 May '04

I can join, save and leave a Version through an URL but I want to do it without being redirected to the version's management screens. It would be less confusing for the user if instead they were returned to the page they were editing after saving the Version. anybody know how to do this? THanks! Michael A. Ruberto DORTRONICS SYSTEMS INC.

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Database Truncation...
by Ramon Aseniero 21 May '04

21 May '04

Hi All, I am having this problem where my zope database is truncated then the whole site crashes then some user folders are gone. Any idea why its happening? -----------------error dump------------------------ Site Error An error was encountered while publishing this resource. struct.error Sorry, a site error occurred. Traceback (innermost last): Module ZPublisher.Publish, line 150, in publish_module Module Products.Localizer, line 58, in new_publish Module ZPublisher.Publish, line 114, in publish Module Zope.App.startup, line 166, in zpublisher_exception_hook Module ZODB.Connection, line 551, in setstate Module ZODB.FileStorage, line 645, in load Module ZODB.FileStorage, line 623, in _load error: unpack str size does not match format ------------------------------------------------------------------------ -------- Troubleshooting Suggestions The URL may be incorrect. The parameters passed to this resource may be incorrect. A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the error log. If the error persists please contact the site maintainer. Thank you for your patience. --------------------end------------------------------- Thanks, Ramon

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summary information using ZPT
by Steve Jibson 21 May '04

21 May '04

We've been using DTML for a few years now, but we have come to a point where we will be re-writing much of our zope content so I thought it would be a good time to look into ZPT. I've been converting a couple of our DTML pages to ZPT as an exercize (or "spike solution") to determine if we should make the switch. Anyway, I've run into a question that I can't seem to find an answer to in the docs. If I have something like this: <dtml-in "stuffAboutPeople()"> <dtml-var lastName> <dtml-var age><br> <dtml-if sequence_last> Number of people: <dtml-var count-lastName><br> Total of ages: <dtml-var total-age><br> Std deviation of ages: <dtml-var standard-deviation-age><br> </dtml-if> </dtml-in> I understand how to get the repeating names and ages using ZPT, but what I can't figure out is how to get the total of the ages and the standard deviation of the ages. I guess the real question is: "How do I provide data that is available via the batch summary features in dtml-in, using ZPT?" Thanks! Steve

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avoid "add new item" and going straight to edit form
by Laura McCord 21 May '04

21 May '04

One my PloneExternalFile Product I want to eliminate the "add new item" option. I want an index_html page to be the edit form. Is there a call that I need to do from the index_html that will go straight to the edit form? Thanks in Advance. -Laura

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RE: [Zope] Good Object-Oriented Design Approaches For Zope Development?
by Passin, Tom 21 May '04

21 May '04

> [mailto:zope-bounces+tpassin=mitretek.org@zope.org] On Behalf > Of Allan Miller I've been looking > at the source > code for various Zope Products and applications, and haven't > seen a lot of > classes used. > > The applications and Products I've seen define one or two > application or > Product classes, and consist of a lot of ZPT's that are > essentially forms > paired with, or posting to, PythonScripts. I wonder - am I missing > something? It seems like the applications are organized > almost exclusively > around ZPT's and PythonScripts, with no use of business > objects/classes, for > example. Is this the unusual approach? I wouldn't generalize. It all depends on what you are doing, and the style and background knowledge of the developers. If you are mainly interacting through web pages and forms, it makes sense to do it using page templates and scripts. Don't forget, though, that page templates themselves depend on the page template classes that run underneath. OTOH, I have written Zope applications that use external methods to invoke highly object-oriented code (you don't necessarily have to call out of Zope to do this, either). The nice thing is that you get a choice of how to go about it. Cheers, Tom P

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RE: [Zope] Python Question
by Passin, Tom 21 May '04

21 May '04

> From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] On > Behalf Of Laura McCord > > I want to modify my python code to append new required users > to my .htaccess file > > So my logic is: > ... > -- This is what my code looks like -- > def createUser(username, basedir): > import os > dirpath = "/var/www/html/da/" + basedir + "/.htaccess" > dirpwd = "/var/www/html/da/" + basedir + "/.htpasswd" > ... So what is your question? I suggest using os.path functions to build up your paths rather than directly coding them as you have done. That way the paths port to other operating systems. Cheers, Tom P

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RE: [Zope] Basic Python Question
by Passin, Tom 21 May '04

21 May '04

> From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] On > But os.linesep is better than '\n' as it *is* '\n' under unix, '\r\n' > under windows an the good sequence ('\n\r\r'? I don't > remember) under macos. '\n' has always worked fine for me on Windows. It is interpreted as a new line, and the right thing is inserted into the output. Cheers, Tom P

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performance stats
by Trevor Warren 21 May '04

21 May '04

Hey guys, Split the transactions across 2 boxen. About 90-100 hits/sec but my transactions are just 10/s. <2 bozen, 2 cpu, 1gb ram, 1 zeo client and 1 zeo server each> Am calling off the tests sn. Lemme know if there is anything else to be tried. Trevor ===== ( >- -< ) /~\ __ Scaling FLOSS in the __ /~\ | \) / Enterprise : trevor.w(a)pvision.biz \ (/ | |_|_ \ Call Now: 9820349221 / _|_| \____________________________________/ __________________________________ Do you Yahoo!? Yahoo! Domains � Claim yours for only $14.70/year http://smallbusiness.promotions.yahoo.com/offer

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RE: [Zope] zope performance issues and it just doesn't scale
by Tiller, Michael (M.M.) 21 May '04

21 May '04

> -----Original Message----- > From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] On Behalf Of > Matt Hamilton > Subject: Re: [Zope] zope performance issues and it just doesn't scale > > Trevor Warren wrote: > > > Bottomline....it just doesn't scale. A simple 3 page > > test give me throughput so bad i can't speak of. Zope > > didn't scale...hence i tried Zeo/Zope....that didn't > > scale too(On the same machine). Am trying Zope/Zeo > > across machines now and will let you know about the > > results. Apache+Zope is something i havent looked at > > yet. > > You must be doing *something* wrong. Man have I been there. I spent a bunch of time trying to understand why my (Plone) site was not getting cached properly. No matter what I did, performance was awful. There turned out to be several different issues all confusing each other. In my case, one of those issues turned out to be the fact that the accelerated HTTP cache manager had a line comment out of it in Zope 2.7.0 that caused me quite a bit of grief (see http://collector.zope.org/Zope/1345) That seemed to make a big difference for me (but I'm running Plone over Zope and Squid instead of Apache). This probably doesn't help with the main topic of this thread, I just wanted to empathize with Trevor. :-) > -Matt -- Mike

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strange ZClasses method name
by Filippo Veneri 21 May '04

21 May '04

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I have defined a ZClass, say I called it 'MyZClass'. Then I added a Python Script (lets name it 'myPS'), in the methods section of the ZClass. How can I call that script from the ZClass itself (not from an instance, which is the common case)? After some experimentation I found that with the following syntax I could call myPS from another script: zClass=context.restrictedTraverse('/Control_Panel/Products/MyProduct/MyZClass') zClass.propertysheets.methods['myPS ']() ~ _ Pleas note the underlined blank in the key used to acces the methods dictionary. Is this intended? And if so, what is its purpouse? Thanks - -- ~ o Filippo Veneri ~ o Key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x1FC1E1CE ~ o Key Fingerprint: DDA9 129E 82C5 0D23 65C0 C04B FDC1 B93F 1FC1 E1CE o .''''. ~ o /O) './| ~ > ) \| .'\| ~ `....` ~ ` ` -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFArhr5/cG5Px/B4c4RAvP5AJ4/1oLyIMZJzOPBH2tmP2Jrho1HygCfZc0i EOp2y6WNxXuDtsCXRBP3Yx8= =75pF -----END PGP SIGNATURE-----

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