March 2004 - Zope - Zope lists

Acquisition from a DTML method in a subdirectory
by Jim Anderson 11 Mar '04

11 Mar '04

I'm running Zope 2.7.0 on a windows platform and I have a DTML method referenced in a subdirtory from a DTML document object. I want to run and external method from the DTML method, but Zpublisher is giving me an error message that the external method resource is causing a name error and the external method is not defined. My ZMI structure looks like this: root | A | Adtml_doc Aext_method B | Bdtml_method Adtml_doc has the following code: <dtml-var expr="B.Bdtml_method()"> Bdtml_method has code that calls Aext_method in A: Hi! <dtml-var expr="Aext_method()"> Bye! If I run the 'view' tab for Bdtml_method, the method runs as expected and if I assume that the method returns 'Good', my output is: Hi! Good Bye! If I run Adtml_doc, I then get the error message that Aext_method is not defined. If I place a copy of Aext_method in the B, and run Adtml_doc, I still get an error message. I was expecting that the Bdtml_method would find Aext_method by aquiring it from the A, but this does not seem to be the case. So it seems that calling a dtml method in a subdirectory does not acquire from the subdirectory or the current directory? Can anyone explain this? More importantly what is the proper way to call an external method from a dtml method being referenced in a subdirectory? Jim Anderson

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Automated reply, your mail regarding "hello"
by Jonas 11 Mar '04

11 Mar '04

Hi, Thanks for your email. We will answer you as fast as possible. We try to do this within 48 hours. Best regards, Bart and Jonas, webmasters Hi, Merci de votre email. Nous essayerons de le répondre le plus vite possible. Donnez-nous maximum 48 heures le temps Bien à vous, Bart et Jonas, Webmasters Hi, Bedankt voor je email. We proberen deze zo snel mogelijk te beantwoorden. Normaal lukt dat binnen de 48 uur. Beste groeten, Bart en Jonas, webmasters

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Question about possible Data.fs corruption
by Ira Sher 11 Mar '04

11 Mar '04

hello all, I recently took over managing a zope site for a small nonprofit. I'm new to Zope and python, and the people who built the site don't have time to maintain it--it arrived in my hands with problems. If a certain kind of object (a "reader's guide") is added to the database, it breaks the site as soon as a person tries to view the new object. We have to restart from a previous version of Data.fs (running Zope 2.5.1, python 2.1, on Debian). I have a copy of the site on an OS 10.3 box with python 2.3 and Zope 2.6.4rc2--on this, the Zope server doesn't come down entirely, but does throw this error when I try to nav to the index page after an update: File /.../Traversable.py, line 106, in unrestrictedTraverse (Object: Zope) (Info: (['105586758764', 'Neela Vaswani', 'Authors'], '')) IndexError: string index out of range The file referred to is the new reader's guide object--I'm not sure why it's being called when I'm simply going to the site index page from an unrelated page, but this is no doubt integral to the problem. The folks who built the site and myself have peeled back this transaction numerous times. Things are packed before that. Nothing else causes problems. Thinking this could be a Data.fs corruption issue, I've run fstest, fsrefs, checkbtrees(none of which complain), and tranalyzer (which breaks almost immediately with "Not enough data left" back in transactions 3 years old). Planning to begin taking back enough transactions that things cease breaking, I've also used a verbose fsrecover to find recent transaction locations, and truncated a copy of the Data.fs file to these--this has created a POSKeyError at 0000000000000002 (site won't start, can't even set app = Zope.app() in python because it throws me an error there, too, so I can't view the object). And...that's where I stand. Any suggestions on how to handle this? I would appreciate any advice on either how to proceed, or rethink the problem. thanks in advance, ira

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Acquiring A subfoldere'd item
by Roy Rapoport 11 Mar '04

11 Mar '04

Imagine this directory structure: / /foobar.pt /foo /foo/bar.pt /baz /baz/alpha /baz/alpha/beta.ps If I'm in beta.ps and want to invoke foobar.pt, I can simply refer to context['foobar.pt'] and let acquisition take care of the rest. I'm looking for a way, however, from within beta.ps, to refer to bar.pt. Unfortunately, context['foo/bar.pt'] doesn't quite seem to do it. Thoughts/suggestions/sneering remarks? -roy Content-Type: text/plain; charset="iso-8859-1" ------------------------------------------------- PLEASE READ THIS WARNING: Investment in securities involves the risk of loss. Past performance is no guarantee of future returns. Other methods may produce different results, and the results for different periods may vary depending on market conditions and the composition of the portfolio. Warning: Do not send time-sensitive, action-oriented messages, such as transaction requests, via e-mail as it is our policy not to accept such items electronically. All e-mail sent to or from this address will be received or otherwise recorded by the Fisher Investments corporate e-mail system and is subject to archival, monitoring or review by, and/or disclosure to, someone other than the recipient.

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Finding (and changing) ZSQL methods with given ODBC connectors
by Roy Rapoport 11 Mar '04

11 Mar '04

We're looking at a desire to find all ZSQL methods that have a given ODBC connector and changing the connector they're using. Today, we could use Zopelabs' "Display All ZSQL Methods" recipe (http://www.zopelabs.com/cookbook/994372502) to find ZSQL methods, but I'm having a bit of a problem limiting this to just the ones that have the ODBC connector; then, I'm also looking for pointers on changing it (though I assume once I know how to query for it I'll know how to set it?). Any useful pointers? -roy Content-Type: text/plain; charset="iso-8859-1" ------------------------------------------------- PLEASE READ THIS WARNING: Investment in securities involves the risk of loss. Past performance is no guarantee of future returns. Other methods may produce different results, and the results for different periods may vary depending on market conditions and the composition of the portfolio. Warning: Do not send time-sensitive, action-oriented messages, such as transaction requests, via e-mail as it is our policy not to accept such items electronically. All e-mail sent to or from this address will be received or otherwise recorded by the Fisher Investments corporate e-mail system and is subject to archival, monitoring or review by, and/or disclosure to, someone other than the recipient.

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Object reload event?
by Dylan Jay 10 Mar '04

10 Mar '04

I have an object that uses manage_afterAdd to install several subobjects. When this object is refreshed or zope is started I want to have a method run on each instance of that object to ensure these subobjects are still there and are of the right type. How do I do this? Dylan Jay --- http://www.meetmemap.com - makes giving directions easy http://www.eatmanifesto.com - against all dumbing down of food

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How to convert string to list without eval or exec
by Josef Meile 10 Mar '04

10 Mar '04

Hi, I've seen this question here several times. Even I made it once long time ago. I could solve it easily because I didn't have a complex list. But for the people, with lists of lists, here are really nice approachs: http://groups.google.ch/groups?hl=de&lr=&ie=UTF-8&threadm=mailman.166.10788… If the link doesn't works, then just copy and paste this on google: "How to convert string to list without eval or exec" group:comp.lang.python.* Regards, Josef

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import acl_users folder...
by Gary G Zhu 10 Mar '04

10 Mar '04

Hi, How do I import acl_users folder that I exported from a zope 2.6 instance to a zope 2.7 instance? This is acl_users folder in root. I get "Error Value: The id "acl_users" is invalid - it is already in use." when I tried to import it. If I delete the current acl_users folder, I lock myself out immediately. Thanks, Gary

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zope products with associated folders
by Stephen Rudd BIOINF 10 Mar '04

10 Mar '04

I have a slowly maturing Zope product that is now associated (thanks John) with a folder like object through OFS.ObjectManager. What would be the 'right' way to read text or DTML from a known object within the project's Zope folder into the product. I am working on a product that will perform some bioinformatics tricks with data in a database and would like users to be able to modify the templates for how data is displayed, and to allow for the intergration of project specific acknowlegement tags. Please excuse me if this is a dumb question - I could really do with some pointers into more advanced Zope product writing - the Zope Bible has been assimilated, I need more info! Thanks Stephen Dr Stephen Rudd Genome oriented bioinformatics Turku Centre for Biotechnology, Finland http://www.opensputnik.org

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speeding up multiple file upload
by zope＠netchan.cotse.net 10 Mar '04

10 Mar '04

Our just finished project implements a product which includes a domain specific repository-like thing what have to handle multiple (100-1000) file uploads. In a new project, we will implement a more general version of this repository as a standalone product. The old one works quite well but there's a lot of room for improving performance in which I seek your advices now. The relevant part of the old stuff is a client-server application. The following steps are made in a transaction: - client generates a filelist, sends it to the server [xml-rpc] - server determines which files should be uploaded (changed files) sends back the result [xml-rpc] - client collects all the files into a large zip (they are more or less regular web content, well compressible), sends to the server [http multipart/form-data] - server unzips and stores the files in ZODB All communication is done via ssl, so the connect-disconnect operation is quite expensive. The two longest operation is the upload and the unzip/store and theoretically these could be done in an asynchronous consumer-producer setup. I'm looking for something like network copy of multiple files via tar, e.g.: tar -xzf- | ssh remoteserver "tar -czf-" The aim is to send all the files over the same channel, one by one, and start server side processing as soon as the first file arrived. Now, this is completely doable with pure python, the question is how should I do this when Zope is the receiver? Both the client and the server part is under our control so any wild idea would work, the only restriction is the all communtication must go over port 443, because both the clients and the server are firewalled. Any hints or pointers would be appreciated. Regards, Sandor

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