September 1999 - Zope

<dtml-with> and last_modified newbie question
by Kevin Teague 11 Sep '99

11 Sep '99

Hello, I've been trying to get a page working where content managers can use the dtml-with tag in conjunction with the dtml-var tag to insert the date that different pages on the site were last updated. At first I wrote the following code: <dtml-with folder><dtml-with dtml_document> <dtml-var title> was last updated on <dtml-var last_modified fmt="fCommon"> </dtml-with></dtml-with> This returned an error until I changed last_modified to bobobase_modification_time. However, it did not return the time that the dtml_document was last modified, but instead returned the time that the folder was last modified on. So I re-wrote the code like so: <dtml-with "folder.dtml_document"> <dtml-var title> was last updated on <dtml-var bobobase_modification_time fmt="fCommon"> </dtml-with> And this worked fine. I have two questions: 1. Is bobobase_modification_time the right name to use for the "Last modified" attribute of an object? How come Zope doesn't understand last_modified (or Last_modified or last-modified)? (I'm running Zope 2.0b6) 2. Is there something wrong with my dtml-with syntax in my first example? Should two nested dtml-with tags work the same as "object1.object2" (or is this a bug in Zope)? -- Kevin Teague Webmaster Stormix Technologies Inc.

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RE: Zope 2 crashes
by Rob Page 11 Sep '99

11 Sep '99

John: > The problems: > 1. Oracle 7.3 ODBC connections can't be opened at all: "invalid > connection string". > 2. SQL Server 6.5 connections work normally but Zserver crashes > intermittently: > PythonServices.exe - Applictaion Error > The instruction "0x1e1124060" referenced memory at "0x00000020". > The memoery couldn't be read" Only relatively recent (since 9/2/1999) ODBC DAs are threadsafe. Normally I'd chalk up: > The instruction "0x1e1124060" referenced memory at "0x00000020". to the mere fact that it's NT but maybe not in this case. Check: http://www.zope.org:18200/Products/DA/ZODBCDA to see if you've got a safe DA. --Rob

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http, firewalls, and non-":80" ports...
by Rick Burque 11 Sep '99

11 Sep '99

In scanning this list while trying to attain higher levels of zope conciousness, I have seen http://www.zope.org:18200/Members/paul/Links/UpsideInterview and lots of other non ":80" http ports referenced. Because I work behind a firewall this effectively stops me from accessing these sites. I would suggest I am not the only zoper with this problem. Is the increasing use of the non- :80 port on www.zope.org a permanent thing or just part of some transition to the new Zope site? -- ------------------------------------------------------------------------ | Rick Burque | - 802-254-4551 x2396 | rburque(a)holstein.com | - 802-254-8251 FAX | Holstein Association | - www.holstein.com | Brattleboro, VT 05302 | ------------------------------------------------------------------------ ********************************************************************** This footnote confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. **********************************************************************

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Zope For Windows (ZWin) Update
by Anthony Pfrunder 11 Sep '99

11 Sep '99

Hi, To answer some questions people have asked, the ZWin Product (the packaged source and binaries for Windows including Mark Hammond's Windows extensions) has been merged into the distutil SIG project @ www.python.org) The original is still available via email but I have removed the link from the ZPT. I am currently on work vacation (ie busy at work) but hope to have some cool Zope toys ready for my return next month. Until then, you can contact me via email as I am not on the Zope lists. Happy Zoping, Anthony Pfrunder

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<dtml-with> problem
by Tom Schwaller 11 Sep '99

11 Sep '99

hi all, I have a folder hierarchy like: issue/1994/01 02 03 ... issue/1999/11 where I use numbers for the folder names, which seems natural here. When I want to acces this objects with <dtml-with "issue.1998.01"> I get the following error: -------------------------------------------------------------- Expression (Python) Syntax error: invalid syntax , for tag <dtml-with "issue.1998.01">, on line 9 of ... -------------------------------------------------------------- of course something like <dtml-with "issue.test"> works without a problem. I would change the names if I could, but 1999, 2000 are difficult to rename :-) Any hint? (after a short holiday whitouht Zope I seem to have forgotten everything.. :-)) <dtml-with "_.getitem('issue.1998.01')"> <dtml-with "_['issue.1998.01']"> do not work either, but I will need something in that direction, because "issue.1998.01",.. are just names which will come from an input form. hope this is a fool's question, otherwise I'm in big trouble... -- Tom http://www.linux-magazin.de/

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pcgi-wrapper (102) failure during connect to Zope 2
by Loren Stafford 11 Sep '99

11 Sep '99

I get this error at the client (and in the log) when starting up a new installation of Zope 2 under Apache. (102) failure during connect  The error comes from pcgi-wrapper when it fails to open a socket. The C code is written so that higher-level procedures overwrite the more detailed error messages from lower-level procedures; so it's hard to discover just why it couldn't open the socket. I'm converting from Zope 1.10.3 to Zope 2.0.0 on a Sun/Solaris 2.6 with Apache. I've converted the database with bbb.py. I'm using the same rewrite rule in Apache as for Zope 1. I've set all the permissions in the Zope 2 directories to match the way they were for Zope 1. I can run Zope on port 8080 without Apache. Can anyone suggest what might be wrong or where to look for more info. -- Thanks -- Loren

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re: [Zope] new proposal with Verisign CA (was radius authenticati on instead of flatfile or userdb?)
by Clarence 11 Sep '99

11 Sep '99

Rob and Chris, Thanks for the information. I would be interested to hear anything about x.509 and LDAP. Basically, somebody wants me to look at a java application that partially does what is needed. The current options are to improve this application or build something from scratch. I displayed my small amount of zope work, and I tried to explain zope's abilities. I believe that zope might be an option for this application, but x.509 is a definite requirement. I don't know any requirements for the x.509 other than it will be used for authentication. Oh yeah, our company uses Netscape web servers also. I listed apache/stronghold because I have a bad habit of relating everything to open source products. Clarence

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solution to RoleManager error when creating zclass inside zclass (was Re: [Zope] outstanding zclass questions.) zclass (was Re: [Zope] outstanding zclass questions.)
by chas 10 Sep '99

10 Sep '99

>> Sort of - it all comes down to "how do we use zope permissions ?". >> But question 6 describes a situation that many people will find >> themselves in when building products with nested classes. Are >> they broken or is there some secret voodoo mantra that we must >> chant to get it to work ? > >Ok, I've been playing around with this for the past two days, and here's >what I've been able to figure out so far: > >1) Create a Product. >2) Create a ZClass (Class1). >3) In Class1, create a ZClass (Class2). >4) Go back to Class1 and open the "Permissions" tab. Highlight "Add >Class2". Click Change. >5) Go back to the "Methods" tab. Open "Class2_factory". Click Change >(without changing anything). >6) Go to the root of your Zope installation and add Class1. Open Class1 >and click Add. > >Works here! Superb, Nick - it works a treat. Looks like I can have a productive zope weekend - thanks indeed :) > I think the key step in getting it to work correctly is top >open "Class2_factory" and click Change. Yes... Step 4 isn't even necessary though it is more explicit. >I don't think it's setting up the >link to Class2_addForm correctly when it first gets created. How on earth did you work this one out ? Thank you again ! chas ps. I've changed the subject line so that this email/post might be found more easily by others searching egroups.com in the future (since egroups doesn't do any threading in its archiving)

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outstanding zclass questions.
by chas 10 Sep '99

10 Sep '99

Maybe I'm getting tunnel vision after fudging about with zclasses for the better part of a week but can somebody pls enlighten me on the following (or better still offer pointers to the precise point in the documentation) : 1. Once you've created a Zclass, how do you modify the base classes ? 2. If you have a product containing several Zclasses within Zclasses, why must all of the zope permissions for these Zclasses stay in the root folder of the product ? 3. Are there are any caveats against renaming Zclasses ? I renamed a class and the instances created with it broke (ie. methods failed). That's SNAFU with Lotus Notes but I thought that Zope's Zclasses are truly OO and can handle it. 4. Is it possible to 'lose' orphans within the ODB (just like orphan documents in Lotus Notes) ? ie. or should class-level changes propagate through to all instances of the class including deletions ? (this is essentially the same as question 3.) 5. Zclasses and Zcatalog : once items have been added to a ZCatalog, why aren't there pulldowns or multiple select boxes under the MetaData Table and Indexes tabs so that people can choose which properties or objects are available ? DC did this so consistently for all other management screens in Zope that this omission makes me wonder if I'm missing something here. (It seems that such a feature would ease use and reduce error.) 6. As per previous email and post : what permissions need to be set in order to create a product that has a zclass within a zclass ? Has anyone got this working yet (other than Kevin Dangoor who didn't use the standard zope permissions in KmNews) ? Thank you very much - sorry for so many questions but I've really been chasing my tail for the past 3 days - and run out of documentation. chas

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ANNOUNCE: smbUserFolder 0.1 released
by mcdonc＠iqgroup.com 10 Sep '99

10 Sep '99

Please see http://www.zope.org:18200/Members/mcdonc/smbUserFolder to download. smbUserFolder The smbUserFolder product is a Zope product that allows you to authenticate users based on their Windows NT domain credentials. Unlike the "NTUserFolder" product which only works when you're running Zope on NT, it works under UNIX. It was developed under Red Hat Linux 6.0 and Python 1.5.2. It makes use of Mark Nottingham's smbvalidmodule C extension module for Python. It is basically a rip-off of the DC etcUserFolder product with tips from Will Fife's nisUserFolder product. It took me about 30 minutes start-to-finish. This is my first Python programming effort. :) It took me longer to write the documentation than the actual product. This Product requires Mark Nottingham's smbvalid Python module. I found this module at http://www.mnot.net/python/smbvalid/ although it may be available elsewhere. I have no idea whether this product will work on platforms other than Linux, based on this requirement. You are welcome to try. I have made it work under Linux and Zope 2.0.0. Basically, before you can use this product, you need to (re)compile Python so that it knows how to use the smbvalid module. You can find instructions about how to do this in the README.txt file that comes with the smbvalid-0.5.tgz file downloadable from Mark Nottingham's site. I found his directions somewhat confusing, so here's alternate ones which include smbUserFolder: 1. Download the pam_smb library (i retrieved it from its home site at http://www.csn.ul.ie/~airlied/pam_smb/) The latest stable release at the time I wrote this document was 1.1.5. 2. Unzip and untar the pam_smb library. 3. "cd" to the pam_smb directory created when you untarred the file. 4. Run "./configure" 5. Edit the Makefile, remove the -fPIC from the line that contains it. 6. Run "make smbvalid" 7. Ensure that you have Python sources on-hand. If not, download them from http://www.python.org and unpackage them in a separate directory. Then copy the "smbvalidmodule.c" file to the Python source "Modules" directory. 8. Add the following line to your Python source's Modules/Setup file: smbvalid smbvalidmodule.c -I{path}/pam_smb/smbval {path}\ /pam_smb/smbval/smbvalid.a where {path} is the location of the pam_smb source build. 9. Compile Python. Remember to enable threading for Zope. I used the following: "./configure --with-threads \ --prefix=/usr; make; make test". 10. Install Python. Make sure you want to do this (if you've installed Python from RPM files or other binary releases , you may want to first UN-install the binary Python build.) Also make sure Zope is stopped on your machine. Then do "make install" while in the Python top-level source dir. 11. Put the smbUserFolder.tar file into your top-level Zope directory, and untar it. 12. Create a folder smbUsers in your top-level Zope folder. Inside this folder, create a file named smbUsers with the following contents: {USERNAME}:{NT_DOMAIN}:{PDC_NAME}:{BDC_NAME} Where, for each user, {USERNAME} is the NT username you wish to validate against, {NT_DOMAIN} is the NT domain in which this user resides, {PDC_NAME} is the PDC for this domain, and {BDC_NAME} is the BDC for this domain. For example: mcdonc:INFOUEST_1:IQPDC:IQBDC colbrw:INFOQUEST_1:IQPDC:IQBDC Without this file, you will not have a userlist to validate against. smbUserFolder does not PULL a userlist from the NT domain, it just compares known NT usernames in a file against users defined in the NT domain. Therefore, for each NT user you need to validate, you have to add an entry to the smbUserList file. This is sort of like Samba, in that you need to add a "local" user for every instance of NT user that you have. I've set up a little cron job that starts a Perl script under Win32 that grabs the userlist from an NT domain and dumps it into a file that can be read by smbUserFolder. Email me if you want the Perl script that does this. 13. Restart Zope. You should have an smbUserFolder object that you will be able to add just like any other User Folder. Dig it! contact: Chris McDonough IQ Group, IT Consultants mcdonc(a)iqgroup.com NO WARRANTIES EXPRESSED OR IMPLIED.

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