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Problems with LocalFS and Zope 2.2.x
by Uwe_Kluge＠lkca.de 18 Dec '00

18 Dec '00

Hi everyone, recently I moved to Zope release 2.2.4 (under WinNT). Everything works great, but there is a issue related to LocalFS. If I try to create a new LocalFS object I get the error message: Error Type: AttributeError Error Value: objectValues Traceback (innermost last): File D:\Zope\Zope224\lib\python\ZPublisher\Publish.py, line 222, in publish_module File D:\Zope\Zope224\lib\python\ZPublisher\Publish.py, line 187, in publish File D:\Zope\Zope224\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook File D:\Zope\Zope224\lib\python\ZPublisher\Publish.py, line 171, in publish File D:\Zope\Zope224\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: manage_addLocalFS) File D:\Zope\Zope224\lib\python\ZPublisher\Publish.py, line 112, in call_object (Object: manage_addLocalFS) File D:\Zope\Zope224\lib\python\Products\LocalFS\LocalFS.py, line 1248, in manage_addLocalFS File D:\Zope\Zope224\lib\python\OFS\ObjectManager.py, line 267, in _setObject (Object: Traversable) File D:\Zope\Zope224\lib\python\AccessControl\Owned.py, line 276, in manage_fixupOwnershipAfterAdd (Object: LWE) File D:\Zope\Zope224\lib\python\Products\LocalFS\LocalFS.py, line 869, in objectValues (Object: LWE) AttributeError: (see above) Target is a local harddisk and I connected as "normally " manager. Are there similar experiences or workarounds? Best thanks in advance! Uwe Kluge

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LoginManager - logging out
by Aleksander Salwa 18 Dec '00

18 Dec '00

I used this code in my "logoutForm" to logout user in my old setup (LoginManager-0_8_7a1, ZPatterns-0-4-2a1 and Zope 2.2.1): <dtml-call "AUTHENTICATED_USER.logout()"> It doesn't work when using LoginManager-0-8-8b1 + ZPatterns-0-4-3b2 + Zope 2.2.4. I've found a work-around: <dtml-call "acl_users.logoutUser(AUTHENTICATED_USER.getId())"> It logouts user as expected. But, can anybody tell me, why the former one doesn't work as it should ? ololo(a)zeus.polsl.gliwice.pl /--------------------------------------\ | `long long long' is too long for GCC | \--------------------------------------/

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Creating attributes in ZClass instances
by David Bustos 18 Dec '00

18 Dec '00

I have a ZClass named Event. Event objects need to keep a list of people signed up for them, so they had a lines property named 'people'. But lines properties have odd semantics, and I want to store arbitrary objects rather than strings (i.e. it shouldn't be edited through the web like a lines property is). So I would like for the 'people' attributes of Event objects to be regular Python lists. It seems that I should create this attribute in the Event_add constructor in my Product. But how do I do that? Thanks, David Bustos

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Fw: Zope.org feedback
by Loren Stafford 18 Dec '00

18 Dec '00

Just for your entertainment.... ----- Original Message ----- From: "Charles Knerr" <crkbreadcrumbs(a)yahoo.com>; "Webmaster" <webmaster(a)zope.org> To: "Loren Stafford" <lstaffor(a)dynalogic.com> Sent: December 15, 2000 10:54 PM Subject: Zope.org feedback > URL: http://www.zope.org/Members/lstaffor/Breadcrumbs > In regards to this URL > http://www.zope.org/Members/lstaffor/Breadcrumbs > > I am the Chairman of Breadcrumbs Inc. a Delaware Corporation.We have trademarked the name Breadcrumbs as a navigational tool in the computer software and Internet industry classifications. > > You are infringing on our trademark. Please remove all references to Breadcrumbs in your documentation. > > Thanks very much, > Chuck Knerr > >

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Creating tables from ZSQL methods..?
by Lee 17 Dec '00

17 Dec '00

I have a ZSQL method, createClassTable, where the paramter 'classCode' is used to name the table: create table <dtml-sqlvar classCode type=string> ( matric float, fname varchar, lname varchar, .. etc ) Is there anyway to execute this in a DTML document 'on the fly'? I have a DTML method where the classCode argument is passed onto the ZSQL method via a web form... but when submitted I am met with Zope interface and asked to enter the query parameter. What I am trying to do: The user will click 'Submit' - and a table is created... the NEXT generated screen will be a view of the database, where he can edit content via web forms, etc. How do I execute the query and go to this view screen in one go? Creating a ZSearchInterface on my ZSQL method has given me a few ideas... but all of them have their problems. Can anyone offer any solutions? Thanks, Lee -- Lee Reilly mailto:lee.reilly@ntlworld.com http://www.footkick.co.uk/lee

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Zope counters @netcraft
by cg＠cdegroot.com 17 Dec '00

17 Dec '00

In the interest of getting Zope into the picture, I'm registering some 5,700 sites I just brought up at Netcraft. Every little bit helps, they say... -- Cees de Groot http://www.cdegroot.com <cg(a)cdegroot.com> GnuPG 1024D/E0989E8B 0016 F679 F38D 5946 4ECD 1986 F303 937F E098 9E8B

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how can you tell who created an object in Zope?
by Chalu Kim 17 Dec '00

17 Dec '00

I have started building asset management/role-based publishing system for multimedia application. It struck me that I could not tell who created objects in the first place. I see in undoable_transaction "user_name" by following UndoForm. I was building author into a few Z classes we fashioned for each multimedia type. Then, why bother because I have seen in UndoForm the user name of each undoable action. So, I backed out and started looking to see if there is pre-built in Zope. What I would like is to be able to tell who created an object? Is there an easy way to do this? Perhaps, I need to stare at undoLog?

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Re: running zope with OpenBSD 2.8 i386
by Ragnar Beer 17 Dec '00

17 Dec '00

I still got it under construction. Zope shouldn't work with Python 1.6 so I removed the package and downloaded the python 1.5.2 sources you ./configure --with-thread to have threads enabled and that's it. Runs beautifully but I didn't have time to install Zope so far. It's running very well under OBSD 2.7 but that version has a python 1.5.2 package. Viel Spass! Ragnar >hi .. > >I want to switch my webserver from linux 2.2.15 to OpenBSD 2.8. On the >linux machine I am running the zope webserver. >I tried to let it run with my OpenBSD home-installation, but it doesn't >work. It compiles slightly and starts up. When I connect to it it asks >me for the superuser account. Then I try to login but I get a lot of >error messages (python related, so maybe the port "python-1.6-threads" >is buggy?). > >My question is: Did someone of you got zope running with obsd 2.8? The >documentation of zope says it runs in any case with 2.7 and python 1.6 >... > >(I tried the above on 2 machines, both obsd 2.8, both the same errors) > > >thanks for reading ... > >MfG >-- >Rene Lange

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Windows NT: Changing default TCP port
by Steve Smith 17 Dec '00

17 Dec '00

Simple question (I presume): How do I change the Zope service under Windows NT to listen on port 80 (instead of 8080). Steve Smith

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RE: [Zope] ZPatterns
by Max Møller Rasmussen 17 Dec '00

17 Dec '00

From: cg(a)cdegroot.com [mailto:cg@cdegroot.com] >Hmm, maybe it's the time for a translate-zPatterns-to-english effort? I'll give it a try: Normally you talk about multi tier applications, when talking about something like zPatterns. Say you want to make a website where users can write articles and comments, like Slashdot. Then in asp, or to a lesser degree Zope you will write your application in some sort of template language. VBScript or dtml. New programmers will mix together persistence, presentation and logic all over the place. That is a bad idea. When you get a little better at programming you make classes that handles database connections, classes that handles the business logic and classes that handles the layout. So in this case you will make a user table in your SQL database, an article table and a comment table. Then you will make some logic to controll it, and some code to view it. This is a three tier system. zPatterns adds a few more tiers and sugar on top. Normally in Zope you would make an folderish article Python product or zClass that can contain comments. And also you would make a Python product or zClass for users. Saving their names, email, webadresses, list of articles or whatever. All fine and dandy. But say instead of using the ZODB for storing user data that you want to use the database that the company allready have with employees??? You would have to rewrite your Python product or zClass from scratch. To avoid this zPatterns use an anbstraction of a table called a "Rack". If you define this Rack how it is implemented at the backend doesn't matter. It can be an SQL database, or saved in the ZODB. The important thing is that you allways acces the Rack the same way so any other part of your application don't have to change when you change storage backend. Often you want to look at data in different ways. You have your database, your logic, and different ways to look at the data. This is called the "Model View Controller" principle in standard Geek talk. You use it to avoid duplication of data. The "DRY" principle (Don't Repeat Yourself). When I see an article I also want see all comments made to this article. Furthermore when I see a user, I also want to see the comments that this user has made and all the articles that he has written. Naturally you don't just copy the list of comment's to the article or the user. This would cause redundancy and bad problems when you change values in the original data. You make a new combined view of your model instead, where you join articles and comments on one page. So data from two different racks can be viewed in one place. In zPattern lingo this is called a "Specialist". But a "view" by any other name still smells as sweet. To use these two nice abstractions in Zope it has to work a little more Zope like. Often when making a zClass you use a folderish object. the zPattern folder is called a "PlugIn". It can have properties just like a normal zClass. In zPatterns the interface or "property sheet" used for handling the values in a single item in a rack. (What would be a single row in an SQL table) is called an "AttributeProvider". When you combine the content of one or more racks into a new Specialist (or view, remmeber?) you use a "SheetProvider" to edit the data. This is what would be a normal management interface in a typical web application. Anyhoo, this is how I unerstand it. But I must add that I have never used zPatterns, This is all from how I understand the documentation, the Wiki etc combined with my limited knowledge of computer science. Hope this helps. Regards Max M

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