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POSTED: Tutorials from IPC8/Zope Track
by Christopher Petrilli 28 Jan '00

28 Jan '00

Gang, I've put the tutorials up on the Zope site. You can find them here: http://www.zope.org/Members/petrilli/Presentations/ I'll be putting up Powerpoint versions as well. Chris -- | Christopher Petrilli Python Powered Digital Creations, Inc. | petrilli(a)digicool.com http://www.digicool.com

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Property Sheet Question
by James W. Howe 28 Jan '00

28 Jan '00

Is there a way to reorder the elements displayed on a property sheet other than deleting all the properties and re-entering them in the proper order or defining a custom property editing view? Thanks. James W. Howe mailto:jwh@allencreek.com Allen Creek Software, Inc. pgpkey: http://ic.net/~jwh/pgpkey.html Ann Arbor, MI 48103

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simple DTML question ...
by Darran Edmundson 28 Jan '00

28 Jan '00

It's 12:30 am and I've been Zoping for 15 hours without a break. I just ran into a problem that can be pared down to the following example ... Create a DTML method: <dtml-var standard_html_header> <dtml-var "foobar(year='chosen_year')"> <dtml-var standard_html_footer> and try to render it where foobar is another DTML method: <input type=text name="<dtml-var year>:int" value='<dtml-var "ZopeTime()" fmt="%Y">'> I suspect the source of my misunderstanding can be put in an even simpler example. If foobar contains only <dtml-var "ZopeTime()"> then calling foobar via <dtml-var "foobar"> returns the unevaluated DTML. Why is this? I wandered through Amos' "Advanced DTML" How-To but I'm not thinking clearly. I can probably figure it out tomorrow but I would dearly love to awake in the morning and find the source of my confusion awaiting in my Inbox. Cheers, darran. Traceback follows: Traceback (innermost last): File D:\Zope\ZopeSite1\lib\python\ZPublisher\Publish.py, line 214, in publish_module File D:\Zope\ZopeSite1\lib\python\ZPublisher\Publish.py, line 179, in publish File D:\Zope\ZopeSite1\lib\python\Zope\__init__.py, line 202, in zpublisher_exception_hook (Object: ElementWithAttributes) File D:\Zope\ZopeSite1\lib\python\ZPublisher\Publish.py, line 165, in publish File D:\Zope\ZopeSite1\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: t4) File D:\Zope\ZopeSite1\lib\python\ZPublisher\Publish.py, line 102, in call_object (Object: t4) File D:\Zope\ZopeSite1\lib\python\OFS\DTMLMethod.py, line 145, in __call__ (Object: t4) File D:\Zope\ZopeSite1\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: t4) File D:\Zope\ZopeSite1\lib\python\DocumentTemplate\DT_Util.py, line 335, in eval (Object: foobar(year='chosen_year')) (Info: foobar) File <string>, line 0, in ? File D:\Zope\ZopeSite1\lib\python\OFS\DTMLMethod.py, line 141, in __call__ (Object: foobar) File D:\Zope\ZopeSite1\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: foobar) File D:\Zope\ZopeSite1\lib\python\DocumentTemplate\DT_Var.py, line 278, in render (Object: ZopeTime()) File D:\Zope\ZopeSite1\lib\python\DocumentTemplate\DT_Util.py, line 335, in eval (Object: ZopeTime()) (Info: ZopeTime) File <string>, line 0, in ? NameError: (see above)

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Site-wide (global) variables ...
by Darran Edmundson 28 Jan '00

28 Jan '00

I'm looking for advice on implementing site-wide (global) variables in Zope. That is, I want certain variables to be accessible to every folder, ZClass, method and document in the ZODB. Should I simply add these properties to the root folder and then make use of aquisition or is there a more elegant approach (say a globals singleton object that lives in the root)?

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DCOracle for 8.1.5 (8i)
by zwang＠turbolinux.com 28 Jan '00

28 Jan '00

Does anyone here know when will the Adapter for Oracle 8i be ready for us to use? Any plan at all? If there is any, what is the time frame? Thanks.

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"James W. Howe" <jwh@allencreek.com>
by Alexandre Ratti 28 Jan '00

28 Jan '00

Hi James, If you sort by modification time in reverse order and set batchsize to 1 then I think you'll get the latest instance. Example: <dtml-in "Catalog.searchResults()" sort=bobobase_modification_time reverse size=1> ... </dtml-in> I'm not sure it's the best way, though. Alexandre At 12:00 27/01/2000 -0800, you wrote: >Date: Thu, 27 Jan 2000 14:55:33 -0500 >To: zope(a)zope.org >From: "James W. Howe" <jwh(a)allencreek.com> >Subject: [Zope] ZCatalog Search Question > >Is there a simple (or even a not so simple) way to ask a ZCatalog to return >the most recent instance of a particular meta_type? Suppose that I create >several objects with a meta_type of 'Article'. I would like to be able to >retrieve the last one created whether it was today or 2 months ago. > >Thanks. > >James W. Howe mailto:jwh@allencreek.com >Allen Creek Software, Inc. pgpkey: >http://ic.net/~jwh/pgpkey.html >Ann Arbor, MI 48103

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Something want to ask!!!
by Elaine Kong 28 Jan '00

28 Jan '00

Hello, I have something want to ask you. I have Z SQL Method call view(select * from HoIn). How can I access one column from the database? I had tried:    But I can't do what I want. The HoIn database is created by: create table(Magazine_name varchar) Please tell me, I have other method to access one column from the database or what's wrong of the above method. Thank You very much! My E-mail address: elainekong(a)hutchcity.com

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Python Conference Links
by Andrew Lahser 28 Jan '00

28 Jan '00

Frank Wilson, of O'Reilly, has published his notes about IPC8. Day 1 -- http://www.oreilly.com/frank/pythonconf_0100.html Day 2 -- http://www.oreilly.com/frank/ Enjoy. Drew

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Checking the state of a database connection
by Graham Chiu 28 Jan '00

28 Jan '00

How does one check to see if a database connection is up and running? What I want to do is check to see if the connector is connected. If not, redirect the browser to another page. I tried a try/try but didn't seem to catch the exception. Also, can you put a redirect command in the standard_html_header? I tried this and it was ignored. ------- Regards, Graham Chiu gchiu<at>compkarori.co.nz http://www.compkarori.com/dynamo - The Homebuilt Dynamo http://www.compkarori.com/dbase - The dBase bulletin

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Return from ZSQL Update?
by Christopher J. Kucera 28 Jan '00

28 Jan '00

Greetings! I've got a SQL Method which does an update on a table. Obviously, when the row I'd like to update exists, the SQL method works fine, but when the row isn't there to begin with, the SQL method just does nothing. Is there a way to find out if the update actually changed a row or not? (And if not, do an alternate INSERT statement instead of the UPDATE.) I would have expected to get an error back from the SQL method, but I get nothing. I'm using an Oracle database connection. (Larger Picture: Obviously one solution would be to do a SELECT on the table to determine if the row exists, and then do an UPDATE or INSERT depending on the results of the select, but I'd rather not do two SQL statements for every update I'm trying to do.) Thanks for your help in advance! -CJ

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