May 2002 - Zope - Zope lists

[ANN] HTTPMounter 0.20 released
by Andreas Jung 30 May '02

30 May '02

HTTPMounter 0.20 is a small Zope product that allows to mount a remote HTTP server (or a subtree or a remote HTTP server) into a local Zope instance (similar to LocalFS). Download it from: http://www.zope.org/Members/ajung/HTTPMounter Changes since 0.10: - works now with VHM - Acquisition support added - HTTP headers of origin server are now send back to the web client --------------------------------------------------------------------- - Andreas Jung Zope Corporation - - EMail: andreas(a)zope.com http://www.zope.com - - "Python Powered" http://www.python.org - - "Makers of Zope" http://www.zope.org - - "Life is too short to (re)write parsers" - ---------------------------------------------------------------------

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Converting DTML IN loop to Repeat loop ZPT
by Nico de Boer 30 May '02

30 May '02

Hi all, I'm trying to convert a dtml-in loop to a repeat loop in a Zope Page Template. I want to create a chain menu with options: Previous | Current | Next. This is my DTML Code (list_chain is a python method that returns three objects (Previous, Current, Next) or None for the object that doesn't exists. Example: The method returns (None, Current, Next) for the first object. <dtml-in list_chain> <dtml-if sequence-start> <dtml-if sequence-item> <a href="<dtml-var absolute_url>">Previous</a></dtml-if> <dtml-elif sequence-end> <dtml-if sequence-item> <a href="<dtml-var absolute_url>">Next</a></dtml-if> <dtml-else> <b><dtml-var title_or_id></b> </dtml-if> </dtml-in> I tried something and it looks like this (but I get errors): <div tal:repeat="item python:here.list_chain()"> <a class="gnawlink" href="" tal:condition="repeat/item/start" tal:attributes="href item/absolute_url">Previous</a> <a class="gnawlink" href="" tal:condition="repeat/item/end" tal:attributes="href item/absolute_url">Next</a> </div> Can someone help me? Greetz Nico

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user rights?
by Jan Johansson 30 May '02

30 May '02

Supposed i have a bunch of users. Suppose i have a bunch of DTML methods in a directory Suppose i want to list a subset of them (defined by a property) depending on which user is calling the "list" method. Also suppose that one document should "belong" to multiple users. As in: Document1: - User1 Document2: - User2 Document3: - User1 - User2 What would be the clever way to acheive this?

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ExtFile & Zope 2.3.3 & Python 2.1.3
by Dirk Datzert 30 May '02

30 May '02

Hi, I have installed latest ExtFile on Zope 2.3.3 running under Python 2.1.3. On adding an ExtFile I get the following traceback: Error Type: AttributeError Error Value: write Traceback (innermost last): File /usr/local/Zope-2.3.3-rhg/lib/python/ZPublisher/Publish.py, line 224, in publish_module File /usr/local/Zope-2.3.3-rhg/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/Zope-2.3.3-rhg/lib/python/Zope/__init__.py, line 227, in zpublisher_exception_hook File /usr/local/Zope-2.3.3-rhg/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/Zope-2.3.3-rhg/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_addExtFile) File /usr/local/Zope-2.3.3-rhg/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_addExtFile) File /usr/local/Zope-2.3.3-rhg/lib/python/Products/ExtFile/ExtFile.py, line 101, in manage_addExtFile (Object: ElementWithAttributes) File /usr/local/Zope-2.3.3-rhg/lib/python/Products/ExtFile/ExtFile.py, line 371, in manage_file_upload (Object: CatalogAware) File /usr/local/Zope-2.3.3-rhg/lib/python/Products/ExtFile/ExtFile.py, line 489, in _copy (Object: CatalogAware) AttributeError: (see above) What is the problem ? The var/reposit directory and sub-dirs are created correct. Regards, Dirk

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weird commit issue
by vsbabu＠vsbabu.org 30 May '02

30 May '02

Hi, We've a Py script (Win2000, Zope 2.5.0) that: - loops through a folder looking for certain objects - these objects are copied to a sub folder using manage_clone - then that sub folder is exported using another python script Problem: In the exported file, all copied objects *except* the last one are there. The last one is there in the sub folder. Finally we solved by issuing a commit after all manage_clones and before the export is called. Question: Should we have to do this? Since the whole script runs as a transaction, shouldn't export be able to see all the cloned objects in the sub folder? Any tips and suggestions are really appreciated. - vsb http://vsbabu.org/

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RE: [Zope] Multithreading issue - python, zope, opensbd, et al
by Graham King 30 May '02

30 May '02

Thanks Paul, for clearing up this debate we have been having, viz: >> Processes != threads I was of that view. I have spent most of the day delving into this and have come to the conclusion that Python IS IN FACT threading within the process, on openBSD. I also posted to the openBSD list and got a very useful reply to the effect that the openBSD OS knows nothing about threads. So, I concluded and discovered that Python acts as a VM, performing its' own internal thread management. I understand from the configuration build that it will try and use OS thread functions if available, or not, as the case may be. >>TEST: If you see the "task # done"'s come up out of numerical order... I ran the test as you suggested and lo and behold, I get exactly that! >>For OpenBSD, are you building Python from scratch? Have you tried a port/package? Built from scratch, considered a package, but there is not yet a V2.1.3 available. We have been runing this environment in production for several months, and on openBSD for 3 months or so. This all started because of some serious performance issues when we installed a new major product into our Zope envt. However, when we decided to stop/start the Zopes (5 ZEO's), the performance issue went away. Which now leads to a whole other bottle of fish.... >>Hope this helps... >>Paul. Yep, heaps! One should always try and learn something new every day... thanks, Graham

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Multithreading issue - python, zope, opensbd, et al
by Graham King 30 May '02

30 May '02

Hi all, Have scanned lots of places to find a clear answer, so as a last resort, am asking the group.... First assumption - if multithreading was enabled, we would see a number of python/zope tasks running (ps, top, etc) when numerous simultaneous requests come in... right? (as we do with apache - lots of httpd processes). We are using python/zope on both Solaris and openBSD, and in looking at the detail log of Python configure on either, I see compile and then loader failures (different details for each OS though). Meanwhile the python build process goes merrily along and creates a python evironment, unbeknown to us at the time. (yes I know one shouls scour the logs, but time is always an issue...). So with openBSD, there seems a requirement for both pthread.h (found) and thread.h (not found). I assume with these that if they wre both found we might expect multithreading to work. I've also noted in passing: - similar problems have arisen with MySQL/Python environments... - something about locking in python that might prevent multithreading anyway (maybe a red herring). Versions in use: openBSD 3.0, 3.1, Solaris 8 python 2.1.3 Zope 2.5.0, 2.5.1 I note that for openBSD 3.0 there is a thread package for python 2.1.1 but I assume that the crash issues with Zope from a few months ago preclude me from using this. Any advice gratefully accepted - like many people I don't know everything. :) cheers Graham

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Inporting HTML-ish sites
by Dennis Allison 30 May '02

30 May '02

I'm about to import into Zope (possibly Zope-CMF) a largish site currently prototyped in HTML. The import will be one-way (we'll never move back to HTML) so we can make whatever changes are needed/wanted in the site representation. Has anyone written a smart import package that does anything more than copy upload files to DTML-documents (or their template equivalent) and map directories into folders. I did a cursory search and found nothing of this ilk. I have seen reverences to a "sitecopy" product but did not find it. Thanks. -dra

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ZFirebirdDA & SQL Dialect 3
by Derek Basch 30 May '02

30 May '02

Hi Everyone, Just a quick question. Has anyone had any experience using Interbase SQL Dialect 3 with Zope? I would like to use the DATE and TIME types that only dialect 3 has. I cant seem to browse the tables from the ZMI and all of my querys fail saying the specified table is not found. Any ideas? Thanks, Derek Basch __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com

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CMF RDMDB reporting tool
by Eugene von Niederhausern 30 May '02

30 May '02

I have been working on a CMF content product that brings RDBMS data to a CMF portal. This is the initial development release (code and design is still very rough) and it currently only works with ZPoPyDA. For a live demo try see: http://l4sb.com/Members/l4sb/Po10226419110/Po10226448900/topic_view and http://www.l4sb.com/Members/l4sb/Po10226419110/Po10226447260/topic_view And see http://zope.org/Members/in1t/bridge for downloads and complete overview. Please check it out and let me know what you think. Any help would be appreciated too. regards, Eugene http://www.l4sb.com

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