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Where is the Z Class Tutorial?
by Philip Aylesworth 22 Sep '99

22 Sep '99

In the excellent "How-To: Z Catalog Tutorial" Amos refers us to the "Z Class Tutorial". I think Z Classes are just what I want, but I can't find it. Does anyone know where it is? While I am at it I will ask if I am after the right approach. I am getting back into Zope after a few months away from it due to a job change. So much has changed! I want to make a contact manager. Basically names and addresses and phone numbers, etc. I was thinking about mySQL since I have used it before but I need to implement it on Windows. I would like to be able to reuse it on Linux so I don't want to get into any platform specific database. I started to look at Gadfly but then I came across mention of Z Classes. Are they robust enough for a couple of thousand entries? Can I cross reference say contacts and companies stored in two separate Z Classes? Thank you, Phil. PS please reply to me as well as the list as I only receive the digest.

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Re: [Zope] Where is the Z Class Tutorial?
by Kevin Dangoor 22 Sep '99

22 Sep '99

-----Original Message----- From: Philip Aylesworth <phila(a)purpleduck.com> To: zope(a)zope.org <zope(a)zope.org> Date: Wednesday, September 22, 1999 8:12 AM Subject: [Zope] Where is the Z Class Tutorial? >In the excellent "How-To: Z Catalog Tutorial" Amos refers us to the "Z >Class Tutorial". I think Z Classes are just what I want, but I can't >find it. Does anyone know where it is? http://www.zope.org:8080/Documentation/Reference/ZClasses (I found this under Documentation -> Developer Reference on zope.org) >I started to look at Gadfly but then I >came across mention of Z Classes. > >Are they robust enough for a couple of thousand entries? Personally, I really enjoy working with ZClasses instead of a standard relational database. I have no reason to think that they won't scale to a couple thousand entries. Right now, I have a ZClass container that contains about 25 ZClass containers that contain about 550 ZClasses that contain about 750 ZClass instances. In total, my ZODB probably has 1400-1500 ZClass instances and I have no complaints. Between the convenience of direct traversal to objects and the zippy searching of ZCatalog, it all works great! >Can I cross reference say contacts and companies stored in two separate >Z Classes? Though there have been a couple requests for it, there is no property type that can directly link one object to another. There are certainly a few ways to accomplish a similar result. In the "contacts" and "companies" example, if there is no chance of a contact being with more than one company, you can do this: Company (ZClass that inherits from ObjectManager so that it can contain other objects) Contact (ZClass) Then, if you refer to a Contact object, you can get to the company by using PARENTS[1]. Kevin

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newbie Q
by kedai 22 Sep '99

22 Sep '99

hi, sorry to burden you guys with such simple problem. but the answer eludes me. Problem: i have folders contained in root like so / LfolderA | LfolderA.1 | LfolderB . . and so on each folder ha s a dtml method main. there's only one index_html method - which is in root dir - calling method main. if i call <dtml-var main>, the dtml method from root will always be returned. Q: How can i get main from any folders returned to index_html? tried using <dtml-in X >, <dtml-var X> and <dtml-with X> but i am not sure what X should be. roughly what i did in index_html in root folder: ------------------------ <dtml-in X> <dtml-with Y> <dtml-var Z> </dtml-with> </dtml-in> where X,Y,Z are combinations of the following: objectValues, objectItems, PARENTS[0].main but to no avail help ..?

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Re: [Zope] Where is the Z Class Tutorial?
by Andrew Lahser 22 Sep '99

22 Sep '99

The ZClass tutorial is here. http://www.zope.org:8080/Documentation/Reference/ZClasses I had to ask just about the same question once. Drew Philip Aylesworth <phila(a)purpleduck.com> said: > In the excellent "How-To: Z Catalog Tutorial" Amos refers us to the "Z > Class Tutorial". I think Z Classes are just what I want, but I can't > find it. Does anyone know where it is? > > While I am at it I will ask if I am after the right approach. I am > getting back into Zope after a few months away from it due to a job > change. So much has changed! I want to make a contact manager. Basically > names and addresses and phone numbers, etc. I was thinking about mySQL > since I have used it before but I need to implement it on Windows. I > would like to be able to reuse it on Linux so I don't want to get into > any platform specific database. I started to look at Gadfly but then I > came across mention of Z Classes. > > Are they robust enough for a couple of thousand entries? > > Can I cross reference say contacts and companies stored in two separate > Z Classes? > > Thank you, > Phil. > > PS please reply to me as well as the list as I only receive the digest. > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://www.zope.org/mailman/listinfo/zope > > (To receive general Zope announcements, see: > http://www.zope.org/mailman/listinfo/zope-announce > > For developer-specific issues, zope-dev(a)zope.org - > http://www.zope.org/mailman/listinfo/zope-dev ) >

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Changing storage manager
by mvalente＠esoterica.pt 22 Sep '99

22 Sep '99

Hi there: In the ZODB Howto: "A Storage Manager is the database back end of Zope. The default storage manager for Zope is a ZODB3 database file object that can be found in the top level var directory of Zope (var/Data.fs). There are other storage managers for Zope, in various stages of development: o The Relational Storage Manager stores all Zope transactions in a relational database. This is still experimental." I've looked all over but I was unable to find the way to change the storage manager from the Data.fs file to a relational DB (mySQL, Sybase, etc ) or indeed to any other kind (like the Temp storage manager also mentioned in the ZODB Howto). Can anyone give me some insights or pointers on how to do this ? C U! -- Mario Valente

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Is Zope binary content Python1.5.2 for rh5.2 ?
by Francois-Regis CHALAOUX 22 Sep '99

22 Sep '99

As I wrote in my last mail, I use the Zope Linux binary and this one contents Python 1.5.2, no!? I had so many problems when I updated rh5.0 from python1.5.0 to 1.5.1 that I break a lot now before changes for production. Many softs are linked to Python :) Did you make this python change on rh5.2 (1.5.1 -> 1.5.2) ? Thanks, FR >>> "Phil Harris" <phil(a)philh.org> 22/09/99 09:15:30 >>> Did you upgrade RH5.2 to Pythgon 1.5.2? Zope2 needs Python 1.5.2 HTH Phil phil(a)philh.org -----Original Message----- From: chalaoux(a)zope.org [mailto:chalaoux@zope.org]On Behalf Of Francois Chalaoux Sent: Wednesday, September 22, 1999 8:28 AM To: zope(a)zope.org Subject: [Zope] Install problem with Zope2.0.1 Hi, I was so happy to install in production a Zope2. It works superfine with Zserver on my PC and RH6.0 . when I tried to install Zope2 on my production machine ( My config is PC i686, RH5.2) I got the following error : Also, I tried to start Zope after that and obtain the other following message. What can I do? Bye, FR. Install error ========= [root@srnoix Zope2]# ./install Built-in exception class not found: EnvironmentError. Library mismatch? Warning! Falling back to string-based exceptions ---------------------------------------------------------------------------- -- Compiling python modules ---------------------------------------------------------------------------- -- ---------------------------------------------------------------------------- -- creating default access file Note: The super user name and password are 'superuser' and 'UWHI16bP'. You can change the superuser name and password with the zpasswd script. To find out more, type: /opt/digicool/zope/Zope2/bin/python zpasswd.py chmod 0600 /opt/digicool/zope/Zope2/access chmod 0711 /opt/digicool/zope/Zope2/var ---------------------------------------------------------------------------- -- creating default database chmod 0600 /opt/digicool/zope/Zope2/var/Data.fs ---------------------------------------------------------------------------- -- Writing the pcgi resource file (ie cgi script), /opt/digicool/zope/Zope2/Zope.cgi chmod 0711 /opt/digicool/zope/Zope2/Zope.cgi ---------------------------------------------------------------------------- -- Creating start script, start chmod 0711 /opt/digicool/zope/Zope2/start ---------------------------------------------------------------------------- -- Creating stop script, stop chmod 0711 /opt/digicool/zope/Zope2/stop ---------------------------------------------------------------------------- -- Error at startup =========== [root@srnoix Zope2]# ./start Built-in exception class not found: EnvironmentError. Library mismatch? Warning! Falling back to string-based exceptions Traceback (innermost last): File "/opt/digicool/zope/Zope2/z2.py", line 366, in ? import ZServer File "/opt/digicool/zope/Zope2/ZServer/__init__.py", line 123, in ? from HTTPServer import zhttp_server, zhttp_handler File "/opt/digicool/zope/Zope2/ZServer/HTTPServer.py", line 115, in ? from PubCore import handle File "/opt/digicool/zope/Zope2/ZServer/PubCore/__init__.py", line 86, in ? import ZRendezvous File "/opt/digicool/zope/Zope2/ZServer/PubCore/ZRendezvous.py", line 87, in ? from ZServerPublisher import ZServerPublisher File "/opt/digicool/zope/Zope2/ZServer/PubCore/ZServerPublisher.py", line 85, in ? from ZPublisher import publish_module File "/opt/digicool/zope/Zope2/lib/python/ZPublisher/__init__.py", line 87, in ? from Publish import publish_module, Retry File "/opt/digicool/zope/Zope2/lib/python/ZPublisher/Publish.py", line 97, in ? class Retry(Exception): TypeError: base is not a class object _______________________________________________ Zope maillist - Zope(a)zope.org http://www.zope.org/mailman/listinfo/zope (To receive general Zope announcements, see: http://www.zope.org/mailman/listinfo/zope-announce For developer-specific issues, zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev )

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AUTHENTICATED_USER considered harmfull :)
by Stuart Woolford 22 Sep '99

22 Sep '99

Having just spent 2 days debugging a Zope 2.0 problem (due to my own stupidity) I finally fixed the problem by changing one of the dozens of references to AUTHENTICATED_USER to AUTHENTICATED_USER.name - the first of course returns a user object, the second returns a text string. This is something to watch out for, as of course a <dtml-var AUTHENTICATED_USER> prints out a string (which does NOT mean it contains one, it just means iut renders as one!) and therefore this problem can be non-obvious.. i know this has been posted before, but newbies like myself meed constant reminders :) BTW, in another direction, has does anyone know why the default DTML in Zope 2.0 atr formated in the old style, not the new <dtml-var > style? I prefer the later a LOT, but cannot usually be bothered changing the default contents (too busy adding great new bits ;) -- ------------------------------------------------------------ Stuart Woolford, stuartw(a)newmail.net Unix Consultant. Software Developer. Supra Club of New Zealand. ------------------------------------------------------------

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Precision on install problem
by Francois-Regis CHALAOUX 22 Sep '99

22 Sep '99

I use the Linux binary distribution from Zope.org. FR

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Newbie questions
by Roelof Naudé 22 Sep '99

22 Sep '99

Hi I've just started out with Zope and would like to write a test app involving the IMAPAdapter and LDAPAdapter. I've added the products and it shows up in my Products folders. How do I continue from here? Where should I add an instance of the adapters? Does anyone have any code samples they would like to share? How-to? Thanx Roelof

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Install problem with Zope2.0.1
by Francois Chalaoux 22 Sep '99

22 Sep '99

Hi, I was so happy to install in production a Zope2. It works superfine with Zserver on my PC and RH6.0 . when I tried to install Zope2 on my production machine ( My config is PC i686, RH5.2) I got the following error : Also, I tried to start Zope after that and obtain the other following message. What can I do? Bye, FR. Install error ========= [root@srnoix Zope2]# ./install Built-in exception class not found: EnvironmentError. Library mismatch? Warning! Falling back to string-based exceptions ------------------------------------------------------------------------------ Compiling python modules ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ creating default access file Note: The super user name and password are 'superuser' and 'UWHI16bP'. You can change the superuser name and password with the zpasswd script. To find out more, type: /opt/digicool/zope/Zope2/bin/python zpasswd.py chmod 0600 /opt/digicool/zope/Zope2/access chmod 0711 /opt/digicool/zope/Zope2/var ------------------------------------------------------------------------------ creating default database chmod 0600 /opt/digicool/zope/Zope2/var/Data.fs ------------------------------------------------------------------------------ Writing the pcgi resource file (ie cgi script), /opt/digicool/zope/Zope2/Zope.cgi chmod 0711 /opt/digicool/zope/Zope2/Zope.cgi ------------------------------------------------------------------------------ Creating start script, start chmod 0711 /opt/digicool/zope/Zope2/start ------------------------------------------------------------------------------ Creating stop script, stop chmod 0711 /opt/digicool/zope/Zope2/stop ------------------------------------------------------------------------------ Error at startup =========== [root@srnoix Zope2]# ./start Built-in exception class not found: EnvironmentError. Library mismatch? Warning! Falling back to string-based exceptions Traceback (innermost last): File "/opt/digicool/zope/Zope2/z2.py", line 366, in ? import ZServer File "/opt/digicool/zope/Zope2/ZServer/__init__.py", line 123, in ? from HTTPServer import zhttp_server, zhttp_handler File "/opt/digicool/zope/Zope2/ZServer/HTTPServer.py", line 115, in ? from PubCore import handle File "/opt/digicool/zope/Zope2/ZServer/PubCore/__init__.py", line 86, in ? import ZRendezvous File "/opt/digicool/zope/Zope2/ZServer/PubCore/ZRendezvous.py", line 87, in ? from ZServerPublisher import ZServerPublisher File "/opt/digicool/zope/Zope2/ZServer/PubCore/ZServerPublisher.py", line 85, in ? from ZPublisher import publish_module File "/opt/digicool/zope/Zope2/lib/python/ZPublisher/__init__.py", line 87, in ? from Publish import publish_module, Retry File "/opt/digicool/zope/Zope2/lib/python/ZPublisher/Publish.py", line 97, in ? class Retry(Exception): TypeError: base is not a class object

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