May 2001 - Zope-Announce

Kaivo Document Library Product Released
by Casey Duncan 04 May '01

04 May '01

Kaivo is pleased to announce the release of their Zope document library product. This product is designed to give you document indexing and full-text searching in a variety of file formats. This document indexing functionality can also be used separately from the library as well. The product includes a complete user interface you can customize which includes browsing, searching, document submission, review and administration functionality. Download at: http://www.zope.org/Members/Kaivo/DocumentLibrary/ Although this is our initial alpha release, and more functions will be added, All of the core functionality is complete. Please try it out! Feedback is welcomed. -- | Casey Duncan | Kaivo, Inc. | cduncan(a)kaivo.com `------------------>

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Extending Zope Dynamically with Hotfixes
by Casey Duncan 03 May '01

03 May '01

Zope's built in functionality is quite impressive. It's object model is full and there are many classes to choose from. However, many times a Zope object or management screen lacks a certain feature that would like to have. There might also be a product out there that you really like except for a few things... How do you change Zope, without making changes to the Zope core modules? Here's how: http://www.zope.org/Members/Caseman/Dynamic_Hotfix Enjoy -- | Casey Duncan | Kaivo, Inc. | cduncan(a)kaivo.com `------------------>

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Announce - Audio Product
by marc lindahl 02 May '01

02 May '01

Odd that noone has made a product for audio storage, analogous to Image, so I took a crack at it. So far it parses MP3 tag data. Anyone have info on RealAudio tag data? Since it's based on File, it'll actually store anything. But the cool thing is, it sucks the ID3 tag data out of the file (if there is any) and puts it into properties, so it can be indexed. You can also edit the data in the properties page, and whenever the audio is rendered, the new tag data is inserted. It should be easy to add stuff to look for WAV and AIFF header info and suck that out, since python comes with libraries to do that, but those aren't popular web formats so I haven't done it yet. It's not CatalogAware, just as Image.... I figured you'd wrap it or whatever to do that, but I'm open to suggestions. It's the first release, so obviously don't depend on it to launch rockets :) Get it here: http://www.zope.org/Members/bowerymarc/Audio

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A French Zope Book !
by Pierre-Julien Grizel 02 May '01

02 May '01

Hi, I'm glad to tell you I wrote a whole book on Zope (with the help of Olivier Deckmyn). It will be released by the french editor Eyrolles around 6/15/2001. There are 3 main parts: - Zope for webmasters (install, DTML, forms & cookies, ZCatalog, ...) - Zope for programmers (ZSQL, Python, ZClasses, products, conception, ...) - Cases studies (An internet/intranet website, an electronic commerce solution and an LDAP web interface) The Products chapter's case study can be accessed at http://www.zope.org/Members/odeckmyn/ZExternalNews I think this is a nice information for the Zope community - and especially the active french Zope community. There are the book references : Title: Zope With three cases studies Author: Pierre-Julien Grizel Editor: Eyrolles / Collection Solutions Développeurs More than 400 pages ISBN: 2-212-09281-x Price: Around 249 F (around 40.8 Euros) Regards, Pierre-Julien Grizel _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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ANNOUNCE Berkeley storage 1.0 beta 2 for Zope/ZODB
by barry＠digicool.com 02 May '01

02 May '01

Hello Zope and ZODB users! The folks at Digital Creations, PythonLabs bring to you the second beta release of a Berkeley DB based storage for ZODB. Information about the Berkeley storage, can be found on the Berkeley storage Wiki at http://www.zope.org/Wikis/ZODB/BerkeleyStorage and other ZODB developments can be found on the ZODB Wiki page: http://www.zope.org/Wikis/ZODB/FrontPage This release of the Berkeley storage package contains the Packless.py implementation from 1.0beta1 which provides a non-versioning, non-undoable storage that uses reference counting to eliminate the need for explicit packs (except in the face of object cycles). The 1.0beta2 release adds two new storages: Full.py which is a complete versioning and undoable storage, and Minimal.py which is a rewritten non-versioning, non-undoable storage that will eventually replace Packless.py. Also included is an extensive PyUnit-based test suite. You must install Sleepycat's Berkeley DB 3.2.9 and Robin Dunn's PyBSDDB wrapper package. Berkeley storage 1.0beta2 has been tested with Python 2.0 and 2.1; it may work with Python 1.5.2 but no decision yet has been made whether that will be officially supported. Berkeley storage 1.0beta2 can be installed as a Python distutils package, and works well with StandaloneZODB distribution: http://www.zope.org/Wikis/ZODB/StandaloneZODB It, of course, can also be used with Zope, however please read the release notes concerning undo with the Full.py storage (there's a new non-destructive undo mechanism called Transactional Undo, which is not compatible with Zope 2.3.1 -- Full.py should work with Zope 2.3.1 but you will not be able to undo). Future development will include the integration of cyclic garbage detection with Full.py, and the addition of reference counting and cyclic gc to Minimal.py. See the ZODB Wiki for other developments. The release is available here: http://www.zope.org/Products/bsddb3Storage Discussions should take place on the zodb-dev(a)zope.org mailing list. Enjoy, -Barry Barry A. Warsaw PythonLabs at Digital Creations barry(a)digicool.com

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SECURITY alert and hotfix release
by Chris McDonough 01 May '01

01 May '01

Hello All, Dieter Maurer uncovered a potential security issue yesterday that necessitated a hotfix release. This hotfix addresses an important security issue that affects Zope versions up to and including Zope 2.3.2. The issue is related to ZClasses in that any user can visit a ZClass declaration and change the ZClass permission mappings for methods and other objects defined within the ZClass, possibly allowing for unauthorized access within the Zope instance. We *highly* recommend that any Zope site running versions of Zope up to and including 2.3.2 have this hotfix product installed to mitigate this issue. - http://www.zope.org/Products/Zope/Hotfix_2001-05-01/README.txt - http://www.zope.org/Products/Zope/Hotfix_2001-05-01/Hotfix_2001-05-01.tgz

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[Ann] emulateRedirect: emulates redirection inside Zope
by Dieter Maurer 01 May '01

01 May '01

The common task: A user fills a form and submits it. The submitted data is checked and if problems are detected, the user gets its original form together with a problem indication *AND* his already filled in data. is not yet well supported. A redirection to the form suffers from browser differences in the handling of the old request data and the difficulty to add all of them into the redirected URL. Presenting the form without redirection is possible but has several caveats: Side effects caused before the problem has been detected are difficult to discard. The 'base' used by the browser for URL resolution may become wrong, seriously confusing the browser and/or Zope. The small External Method 'emulateRedirect' emulates a redirect without an extra interaction with the browser. It resets the REQUEST parameters such that they get the same values as for a direct traversal to the redirected object. Furthermore, it sets the 'base' tag used by the browser for resolution of relative URL such that relative references from the redirected to object become correct. 'emulateRedirect' provides control over the transaction ('abort', 'commit', 'keep'). 'emulateRedirect' works for Zope 2.3. It may work with Zope 2.2. As it uses undocumented Zope publishing features, it may break with any new Zope version. More information and download via: URL:http://www.dieter.handshake.de/pyprojects/zope Dieter

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[ANNOUNCE] Zope Book Final
by Amos Latteier 01 May '01

01 May '01

I'm happy to announce that the Zope Book is finished. http://www.zope.org/Members/michel/ZB You can read it online, or download it in HTML and PDF format. The book has been sent off to the publisher and you should be able to pick it up in stores within a month or two. I want to give a big thank you to everyone who has helped a long the way. Thanks! -Amos P.S. The book will continue to evolve as Zope grows and changes. This version of the book covers Zope 2.3. We will continue to improve the book and add new chapters to cover topics such as XML and Page Templates. If you want to be a part of this process take a look at the project page. http://www.zope.org/DocProjects/Book -- Amos Latteier mailto:amos@digicool.com Digital Creations http://www.digicool.com

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