October 1999 - Zope - Zope lists

KM|NetNews
by Anders Gaarsdal Holst 18 Oct '99

18 Oct '99

Hallo! Anyone knows where I can download KM|NetNews? I have tried looking on "www.zope.org" without results. Regards, A n d e r s G a a r s d a l H o l s t

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Re: [Zope] Zope.org performance
by Jeff Rush 18 Oct '99

18 Oct '99

I see such large amounts of memory here as well -- when I have a 60M database and just two users (it's our demo machine). The OODB contains 30 directories of 20 files each of 100 KB text. When we fire up /manage and peek into one of those dirs, <wham> up goes the load, until I restart the server and then it drops down to nothing. Oddly, accessing the site via FTP seems to place little load, so I presume the Zope persistence mechanism is reading into memory the entire content of each 100 KB object, just to present it in a list on the manage screen. (?) We're looking at switching to placeholder Zope objects and storing the text as static web files outside Zope. -Jeff Rush On Tue, 19 Oct 1999 02:16:49 +1000, Ben Leslie wrote: >Whilst my site is not get huge amounts of hits (yet :). I have been needing >to suck the content from using wget. >When I do however my system really starts to thrash badly and checking the >top output I get this: > ><snip> MEM CPU% MEM% >30200 www-data 6 0 60328 56M 872 R 0 13.2 45.5 1:40 python >30212 www-data 0 0 60328 56M 872 S 0 0.0 45.5 0:00 python >30213 www-data 4 0 60328 56M 872 R 0 9.0 45.5 3:11 python >30214 www-data 1 0 60328 56M 872 S 0 10.4 45.5 3:09 python >30215 www-data 8 0 60328 56M 872 R 0 18.7 45.5 3:01 python >30216 www-data 10 0 60328 56M 872 R 0 19.1 45.5 3:14 python ><snip> > > >My site is only medium size (~200 pages, 16MB), however as you see it seems >to use a fiar bit of memory, is it normal for it to use so much memory even >thought my data.fs is 16mb (packed).

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Q: Largest Zope Site in Production
by James W.Y.F. Chan 18 Oct '99

18 Oct '99

Hello Zope-List, I've been playing around with Zope and Squishdot for about a month now. I really like Zope (and squishdot, of course). I like to use Zope for larger and more interactive websites. Something along the line of e-commerce transactions or web-based training. My question to the Zope list is: has anyone been using Zope for sites where there are more than 100 "users" or "requests" per day? What about 1000? 10,000? 100,000? I'm using the term "users" loosely here. Ideally I would like to see sites that allow users to enter into website through authentication and change, say, their profiles -- much like what the current Zope.org site is allowing people to do. You can also interpret "users" as "requests". I'm simply wondering how Zope is coping with sites that have high traffic (hardware, memory, Linux). Thanks, -james-

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Subject: [Zope] Disabling buttons
by Kevin Howe 18 Oct '99

18 Oct '99

>I'm taking over an app that uses a bunch of client side Java. The only >reason I can see it uses Java is because it allows you to build logic >like "if this radio button is selected, this checkbox is disabled." If >there was a way to do this in a combination of DTML and Javascript then >the app could use just those technologies. Has anyone got a demo of >something like that? I can think of fairly convoluted ways to do it -- >is there a straightforward way? > Paul Prescod Hi Paul, this can easily be done using HTML 4.0 and Javascript. In HTML 4.0, form elements have a new property "DISABLED" which does just that. Since Javascript has access to all form properties, it is easy to create a Javascript which says "if this radio button is selected, this checkbox is disabled." If you'd like examples I remember seeing several tutorials on www.javascripts.com . Below is a simple form with some DISABLED elements in it. Example Form - a DISABLED selectlist and a DISABLED checkbox. ------------------ <html> <form> Diabled Select: <select name=SELECT DISABLED> <option>a <option>b <option>c </select> Disabled Check: <input type=checkbox name=CHECK DISABLED> </form> ------------------

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MEDUSA Performance
by Mauricio Souza Lima 18 Oct '99

18 Oct '99

Hi all, Like many peoples, i'm about to put a whole zope2 site in the web, and this site will be very visited, and i want to know if the medusaweb server is or isn't a good choice. The question is, can i put a big site in the medusa? By!

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Problem creating navigation bar
by David C. Morrill 18 Oct '99

18 Oct '99

This has probably already been covered many times before, but my scan of the mailing list didn't turn up anything, so here it comes again... I want to build a navigation bar for a folder with each sub-folder having a certain property (e.g. 'isMenu') defined creating a link in the nav bar (i.e. sub-folders without the 'isMenu' property being defined should not be in the nav bar). Seems pretty simple so far. When a sub-folder is selected, I want it to display the same nav bar as the parent folder to allow navigation within this section of the site. The problem is that the nav bar for the sub-folders do not show any items at all (because their PARENTS[0] is not the same as for the parent folder). I've tried a lot of different things (too numerous to list here), but in all cases the acquisition logic defeated my attempts to solve it. I finally got it to work by using the following: <dtml-if "PARENTS[0].id == 'rootFolder'"> <dtml-call "REQUEST.set('root',PARENTS[0])"> <dtml-else> <dtml-call "REQUEST.set('root',PARENTS[1])"> </dtml-if> <dtml-in "root.objectValues(['Folder'])"> <dtml-with sequence-item only> <dtml-if "_.has_key('isMenu')"> ...<dtml-var id>... </dtml-if> </dtml-with> </dtml-in> The thing I don't like is having to test explicitly for the name of the root folder in the top line, since it prevents me from using the same DTML in some other part of the site. Does someone have a suggestion for a better way of doing this whole thing? Dave Morrill

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Calling dtml methods in others folders
by Andreas Jung 18 Oct '99

18 Oct '99

Reply-To: I have the following DTMl file "func_dtml" in a Zope folder "functions": <h2><dtml-var rubrik></h2> Why can't I call in the parent folder within a DTML document something like: <dtml-var "functions/func_dtml(rubrik='test')"> Is it in any case forbidden to call dtml methods in other folders ? Thanks, Andreas

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Yahoo-like link design
by John Glossner 18 Oct '99

18 Oct '99

Having worked through the ZClasses tutorial and howto examples, I now have a design question. Being very inexperienced with Zope, I would like to create a catalog of links that automatically updates itself when new links are added. I suppose the best way to do this is to inherit from CatalogAware and ZObjectManager. CatalogAware (as I understand it) allows me to automatically update itself and ZObjectManager allows me to embedd sub-links. Then I can add a search interface to find links. My Links tree would look something like: /Links + History + US History + European History + Languages + Dutch + English Does this sound like a reasonable way to keep a database of links? Does anyone have better suggestions? I prefer not to store them in an external DB (since I'm learning Zope). One other thought, instead of ZObjectManager perhaps I should inherit from Folder? Thanks, John

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RE: [Zope-dev] pam authentication support with PyPam
by Alexander Staubo 18 Oct '99

18 Oct '99

There are two aspedcts of the current security subsystem that bug me. The first is the fact that only user folders are accumulative only at folder boundaries. You cannot create one UserFolder and one NTUserFolder at the same level and have them co-opt the user authentication responsibility. The second, more serious gripe is with the security permission model. Look at NT 4.0 and the security UI that comes with SP4/SP5's Security Configuration Manager for a good example (installing it will upgrade NT's security dialogs with a new UI). While Zope permits acquired, accumulative access definitions specified across _all_ roles for each permission, this is too coarse and leads to huge sysadmin headaches (I know -- I've been there, and I'm still there). We need fine-grained, per-role permissions that let us specify whether a role acquired the permissions of the parent, or whether it allows or denies the permission. Instead of the matrix we have today (below, "[X]" denotes a checkbox): Acquire Permission Anonymous Manager Owner [X] Access contents information [X] [X] [X] [X] View [X] [X] [X] [X] View management screens [X] [X] [X] ...we ought to have something like this (here, "[...][]" denotes a combo box): Permission Anonymous Manager Owner Access contents information [Acquire][] [Deny ][] [Allow ][] View [ ][] [ ][] [ ][] View management screens [ ][] [ ][] [ ][] Each combo box would be set to either "Acquire", "Allow", or "Deny". "Acquire" has the role acquire the permission setting of the acquisition parent. "Allow" specifically gives the permission to that role. "Deny", of course, explicitly denies the permission to the role. I shouldn't need to point this out as it should be paintfully obvious to anyone who has used Zope's permission settings, but the problem is that a role's permission setting is either allow/deny, but the acquisition switch applies to all the roles. One you un-check the "Acquire permissions..." checkbox, you must explicitly define the permissions for each role, independent of whether the role is relevant. In a small, flat, and/or simple ZODB this system is usually endurable, but in a real-world object hierarchy where roles must be delegated carefully, it doesn't work. The problem is exacerbated by the fact that Zope has no provision for summarizing the security permissions in effect throughout the site, or batch-applying security settings. If subfolder Foo's permission settings deviate from that of a parent, I can't know unless I go to the folder and look at the security tab. One folder is okay; if you have a hundred of those, it's a tad more serious. -- Alexander Staubo http://www.mop.no/~alex/ "Give me an underground laboratory, half a dozen atom smashers and a beautiful girl in a diaphanous veil waiting to be turned into a chimpanzee, and I care not who writes the nation's laws." --S. J. Perelman > -----Original Message----- > From: Michel Pelletier [mailto:michel@digicool.com] > Sent: 18. oktober 1999 16:13 > To: 'Will Fife'; Oleg Broytmann > Cc: zope-dev(a)zope.org > Subject: RE: [Zope-dev] pam authentication support with PyPam > > > Regardless of whether or not Zope has a PAM folder (which I think is a > good idea) we need to discuss an upcomming problem with Zope user > authentication: the proliferation of user folders. > > The problem is there are now quite a few user folders that all kinda > look the same, smell the same, and share a good bit of code. This is > very brittle. The 'backends' should be abstracted away from the > 'frontend' and we should return to the original state of > grace, one type > of user folder. > > At the moment if we were to change an aspect of Zope > authentication that > would break existing user folders, we would have to go and fix every > single one, the orpaned ones without maintainers (like > etcUserFolder, my > personal orphan) would simply remain broken until someone got > frustrated > enough to fix them. This is a pretty bad state of affairs. > > So lets fire up a discussion on what kind of model we could > impliment to > have a generic user folder with pluggable backends (one of which could > be PAM). It might even be a good idea to look *at* PAM for > some ideas, > anyone here a PAM expert? > > Hmm.. it might also be nice to take Membership and the ZPT into > consideration here, like support for extensable user objects (if the > 'backend' supports it) etc. > > -Michel > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://www.zope.org/mailman/listinfo/zope-dev > > (Related lists - please, no cross posts or HTML encoding! > > To receive general Zope announcements, see: > http://www.zope.org/mailman/listinfo/zope-announce > > For non-developer, user-level issues, > zope(a)zope.org, http://www.zope.org/mailman/listinfo/zope ) >

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String to a List
by Kulpinski, Dejan 18 Oct '99

18 Oct '99

Does anybody know how o convert a string into a list ? I need this in order to supply data to in tag Thanx, Dejan Kulpinski Sierra Systems Consultants Inc. (604) 688-1371/450

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