Zope May 2002

zope@zope.dev

400 participants
711 discussions

How do I integrate zope with apache
by Mosquito 05 May '03

05 May '03

Hey there, I'm using linux 8.0 with KDE Desktop. I've got zope running on a medusa server at the moment, the one it came with. I've also got an apache server running and I was wondering how I can integrate the zope interface to be used with my linux apache server. I'm a total linux nub so go easy on me . ~Mosquito

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Zope Server on Linux
by Mosquito 30 Apr '03

30 Apr '03

Hello everyone, I'm new to LINUX, ZOPE, PYTHON, and this mailing list. I have a ZOPE server running on Linux and I'm trying to get my forums to work. They require PHP and mySQL both of which I have but I'm not sure how to install them into my ZOPE server. Any suggestions? ~Mosquito

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Manage_addLocalFS
by Marie Robichon 10 Jan '03

10 Jan '03

Hi everyone, I want to create a LocalFS with a script but I get the following error: Error Type: TypeError Error Value: unsubscriptable object here's the script (thanks to Casey Duncan!): context.manage_addFolder(folderid, foldertitle) product = context[folderid].manage_addProduct['PageTemplates'] product.manage_addPageTemplate('index_html', foldertitle, file) product.manage_addProperty('onsite_only',1,'boolean') product.manage_addProperty('status','statustype','selection', 'private') # works up to here if inc_images: product.manage_addProduct['LocalFS'].manage_addLocalFS('images', 'images', '/www/doc/images') TIA Marie Robichon Web Task Force European Synchrotron Radiation Facility BP 220 38043 Grenoble Cedex France http://www.esrf.fr Tel: (33) 04 76 88 21 86 Fax: (33) 04 76 88 24 27

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privileges problem
by Catonano 24 Dec '02

24 Dec '02

Hello all, I'm tring to execute this script: lista = [] folder = container.indice2() #indice2 is a ZCatalog for file in folder: if not file.hasProperty('codice'): lista.append(file.id) attributes=getattr(folder, file) attributes.manage_addProperty('codice', 'inserted yet', 'string') return lista I borrowed the idea from the /Examples/GuestBook/addEntry script Zope prompts me for a user name and passwd, I type my usual account data (I'm the only user and I think I have full privileges) and BAM! Zope Error Zope has encountered an error while publishing this resource. Error Type: Unauthorized Error Value: You are not allowed to access in this context Troubleshooting Suggestions * The URL may be incorrect. * The parameters passed to this resource may be incorrect. * A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the HTML source for this page. If the error persists please contact the site maintainer. Thank you for your patience. I tried to give the script all the proxy roles I could I opened Control Panel/acl_users and gave manage property permission to managers and owners (I'm a manager user): NOTHING! Please: what's going on? Thanks anybody who will help me Bye Catonano

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Problem with zope Server
by Jianping Zhu 18 Aug '02

18 Aug '02

I have rehat 7.2 server with zope web sever on it . The system has been working fine for a long time. I tried today to upload a .pdf file( 10 M) to an exsiting web page on the server and but failed. I got following error message: ------------------------------------------------------------ Zope Error Zope has encountered an error while publishing this resource. Error Type: IOError Error Value: [Errno 28] No space left on device -------------------------------------------------------------------------------- Troubleshooting Suggestions The URL may be incorrect. The parameters passed to this resource may be incorrect. A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the HTML source for this page. If the error persists please contact the site maintainer. Thank you for your patience. ------------------------------------------------------------------------ In fact I still have enough (5G) left in the server. How can I fix this problem? Any suggestion will be greatly appreciatd.

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Psycopg 1.0.X - Python 2.1
by Heimo Laukkanen 31 Jul '02

31 Jul '02

Hi all, have had some fun with installing psycopg in different machines and trying to take newer version into use. Below is the configure,which works for me with psycopg 1.0.1 and versions with errprs for 1.0.3 and 1.0.4. Any ideas what migth be the problem? Help appreciated. Ps. Is it just me or does someone else think, that this installing is sometimes too hard. Anyway guide for installation still present at: http://groups.yahoo.com/group/zope/message/74401 *1.0.1* ./configure --with-mxdatetime-includes=../egenix-mx-base-2.0.3/mx/DateTime/mxDateTime/ --with-postgres-libraries=/usr/local/pgsql/lib --with-postgres-includes=/usr/local/pgsql/include --with-python=/usr/bin/python2.1 WORKS. Hooray! *1.0.3* ./configure --with-mxdatetime-includes=../egenix-mx-base-2.0.3/mx/DateTime/mxDateTime/ --with-postgres-libraries=/usr/local/pgsql/lib --with-postgres-includes=/usr/local/pgsql/include --with-python=/usr/bin/python2.1 --with-python-version=2.1 ERROR: ./config.status: /usr/bin/python2.1/lib/python2.1/config/makesetup: Not a directory Wtf? *1.0.4* ./configure --with-mxdatetime-includes=../egenix-mx-base-2.0.3/mx/DateTime/mxDateTime/ --with-postgres-libraries=/usr/local/pgsql/lib --with-postgres-includes=/usr/local/pgsql/include --with-python=/usr/bin/python2.1 make ./module.o ./connection.o ./cursor.o ./typeobj.o ./typemod.o -L/usr/local/pgsql/lib -lpq -o ./psycopgmodule make: execvp: ./module.o: Permission denied make: *** [psycopgmodule] Error 127 Fails....wtf? -huima

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ZServer uncaptured python exception ...
by Philipp Giere 26 Jun '02

26 Jun '02

Hi! I have big problems running my Zope-2.5.0-src under Solaris 2.7 with python 2.1.2 (configure --with-thread). The same problems occur even when I install the binary for solaris-sparc. The Zope Server dies with the following error: 2002-03-21T17:40:00 ERROR(200) ZServer uncaptured python exception, closing channel <ZServer.HTTPServer.zhttp_channel connected 194.31.184.118:4320 at 0xa7c99c channel#: 30 requests:> (socket.error:(11, 'Resource temporarily unavailable') [/opt/Zope-2.5.0-src/ZServer/medusa/asynchat.py|handle_read|82] [/opt/Zope-2.5.0-src/ZServer/medusa/http_server.py|recv|420] [/opt/Zope-2.5.0-src/ZServer/medusa/asyncore.py|recv|357]) ------ 2002-03-21T17:40:00 ERROR(200) ZServer uncaptured python exception, closing channel <ZServer.HTTPServer.zhttp_channel connected 194.31.184.118:4319 at 0xa7ca64 channel#: 29 requests:> (socket.error:(11, 'Resource temporarily unavailable') [/opt/Zope-2.5.0-src/ZServer/medusa/asynchat.py|handle_read|82] [/opt/Zope-2.5.0-src/ZServer/medusa/http_server.py|recv|420] [/opt/Zope-2.5.0-src/ZServer/medusa/asyncore.py|recv|357]) ------ 2002-03-21T17:40:00 ERROR(200) ZServer uncaptured python exception, closing channel <ZServer.FTPServer.FTPServer listening :8021 at 0xb0490c> (exceptions.TypeError:unpack non-sequence [/opt/Zope-2.5.0-src/ZServer/medusa/asyncore.py|poll|94] [/opt/Zope-2.5.0-src/ZServer/medusa/asyncore.py|handle_read_event|385] [/opt/Zope-2.5.0-src/ZServer/FTPServer.py|handle_accept|621]) ------ 2002-03-21T17:40:00 PROBLEM(100) ZServer warning: server accept() threw EWOULDBLOCK The Startscript: #! /bin/sh LD_LIBRARY_PATH=/opt/oracle/8.1.7/lib:/usr/lib:/usr/openwin/lib:/opt/SUNWmotif/l ib:/opt/SUNWspro/lib:/opt/lib:/opt/gissw/ArcIMS3.1/aims31exe/lib:/opt/gissw/ArcI MS3.1/aims31exe/bin:/opt/lib/python2.1 ORACLE_BASE=/opt/oracle ORACLE_HOME=/opt/oracle/8.1.7 ORACLE_SID=sun01 NLS_LANG=GERMAN_GERMANY.WE8ISO8859P1 ORA_NLS33=/opt/oracle/8.1.7/ocommon/nls/admin/data export ORACLE_BASE ORACLE_HOME ORACLE_SID NLS_LANG ORA_NLS33 LD_LIBRARY_PATH reldir=`dirname $0` INST_HOME=`cd $reldir; pwd` echo "" echo "" echo "Starting Zope Server in $INST_HOME ..." echo "" echo "" export INST_HOME exec /opt/bin/python \ $INST_HOME/z2.py \ -D "$@" Somebody out there with an idea?? Thank you! Philipp

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version trouble
by Steffen Hausmann 25 Jun '02

25 Jun '02

Hi, I'm working with Zope 2.4.3 on a linux SuSE 7.0 system. I was just editing my homepage using a version ( called 'tmp' ) and 2 different browser windows ( mozilla 0.9.7 ). Then I decided that the changes I had done are ok, saved them and quited the version ( in the first browser window ). After that I found a small mistake in one of my sites and corrected it ( in the second browser window ). Somehow the version was still active and the changes were made inside it. But, it wasn't the same verion. The version the changes were made in is called 'No longer active'. I can start and quit working with that version by starting and quitting the original version tmp. But if I want to save / discard the canges there is just the message 'No unsaved work has been done in this version' The link of the version 'No longer active' points to the root directory of Zope ( I was working in the folder 'hausmann-family' ), but there is no version at all. How can I get rid of this version? Some files are locked and I can't delete them or do anything else with them. Thanks, Steffen -- Es gibt keine perfekten Menschen, nur perfekte Absichten.

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Death to zClasses!
by Max M 06 Jun '02

06 Jun '02

Death to ZClasses!!! ==================== By Max M. 28-05-2002 10:42 I have used Zope for a few years by now and have developed both in zClasses and Python products. While zClasses seems nice when you start out, you will soon be bitten by their subtleties. So you save a little time by not doing a Python product at the beginning, but soon you loose that time, and more as you struggle with the zClasses. I have written this document to help other people see why zClasses are "A Bad Thing". I think that way to much effort is wasted in documentation and development using zClasses. If all that energy had been focused on Python products, Zope would be much easier to use and program for everybody. so DEATH TO ZCLASSES! ;-) It is hard to change the base classes with ZClasses --------------------------------------------------- Sometimes you make a mistake, or you forget to include a base class when writing a product. So you want the ability to add them later. The order in which you subclass classes matters. Sometimes you do it wrong, and you want to change it. zClasses makes this difficult. Example:: class myFolder(SimpleItem, ObjectManager): "This won't work as SimpleItem has a method called ObjectValues that allways returns an empty tuple" class myFolder(ObjectManager, SimpleItem): "This is The Right Way as the it will call ObjetManager.ObjectValues() so yuu get the expected result" Ok you made the mistake. Now try and fix it ! Subtle changes when changing meta type -------------------------------------- If you change the meta type of a zClass you have to also change the add List name, in the zClass' factory to be able to add instances through the Zmi. That is at least when you have a Python Based ObjectManager class that uses the ZMI. It also breaks the ability to cut/copy/paste/rename those zClass objects It also makes the little + dissapear in the tree view so you cannot expand the Objectmanager based zClasses. Makes it harder to learn what Zope actually do ---------------------------------------------- When you write Python product everything is much more transparent, and there are fewer subtle effect that surprise you and make you wast hours debugging. You are more prone to do it the right way when writing Products and put login into Python and not the dtml. Simply because it is easier to do. It's also hard to document how to make zClass based products as you have to use a lot of screenshots or animations instead of text. Code for one class spread over several locations stops you from thinking clear ------------------------------------------------------------------------------ It as if you wrote Python code with all of your methods in different files. And as it is common knowledge the number of errors rises exponentially with the amount of code you cannot see. It can make class seem much bigger and more complicated than it really is if you cannot see all the code. Having products with parts of the code in External methods, other as dtml-files, python scripts etc. in the Zmi is a real drag! It seems so simple to begin with, but as the product starts to grow, it is so tiring. Programming through a web browser sucks! It slows down development considderably. Using ftp in the editor doesn't help much. A hassle to upgrade on remote servers ------------------------------------- With products you just upload via ftp, and perhaps run a script to find all instances and add new attributes. With zClasses keeping a development and production server in sync is hard to difficult. There is a whole lot of software writte to work around the flaws of using and uprading zClasses. That should be a hint that somethings wrong. Other reasons that other people has reported -------------------------------------------- There is a subtle bug in the ZClass registry code that can cause instances to refer to an older class definition. Makes it hard to use straight up Python code, have to use external methods, Working from Python gives you MUCH more power Copy & paste programming does not work with ZClasses. So it's harder to start new projects. Debugging Python code is easier than debugging ZClasses. You can use CVS for the code ZClasses behave "strange" with regard to nested acquisition. ZClasses are relatively slow, especially if you use other ZClasses as base classes of ZClasses If you have anything to add and/or correct. Please mail it to me at maxm(a)mxm.dk regards Max M

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RE: [Zope] XML in Zope
by sean.upton＠uniontrib.com 05 Jun '02

05 Jun '02

I would think ParsedXML+DOM in Python Scripts+DTML/ZPT would work here??? Contrary to popular belief, I don't think ParsedXML is "dead" - it works quite fine, thank you, for all the DOM L2 stuff I do, which is likely why there hasn't been a lot of development... and I've seen that Martijn Faassen has been doing some small improvements in CVS in the last few days. All this assumes small documents like forms and news-articles, not book-sized docs, since nodes in a ParsedXML doc are not manageable, so each edit reqires the whole DOM from the document object downward... I've used this type of setup for interactive form applications as well as XML-stored content applications and been quite happy, but I've been doing a lot of DOM-in-python-scripts coding; it is a bit tedious to code for, there is a lot of recursion to think about, etc.... but once you get it right, it just works... Alternately, I think you could put any Python XSLT on top of this with a few external methods, though I think it's a bit hackish since you would be printing XML, outputting it to a string, and having it parsed again (but, hey, if it works...) - as long as you are not indexing the results of XSLT in a Catalog index for a bunch of docs! As an aside, it sounds like you need to make a lot of revisions to your documents, and if you store them in the ODB it might create bloat in a versioned ODB unless you pack frequently. A brief thought for you: create something that will do application-level versioning and use non-undo mounted storage for a repository for your documents... Consider creating a folderish type whose instances contain a few specialized objects: one is a ParsedXML DOM object that contains the current XML for your document; your folderish base object could optionally be coded to act as a proxy to this contained DOM. Also, create a simple type that contains previous revisions of the XML as string-based properties, rather than storing a full DOM for each revision. Alternately, use compression methods to compress these archived revisions XML and use file objects containing the compressed text. Then, keep track of things with a state table of some kind. The downside to this is that you would have overhead in converting XML to DOM every time you loaded up a previous revision, but from a storage perspective, this should work quite well. A caveat: I haven't done exactly this before, but, after serious thought, this is the approach I plan to take with a project I am starting work on for XML-based content types in our content management system, and my hunch is that this will work quite well. Cheers, Sean -----Original Message----- From: Dan Shafer [mailto:pydan@danshafer.com] Sent: Wednesday, May 15, 2002 9:45 AM To: Chris Withers Cc: Dan Shafer; zope(a)zope.org Subject: Re: [Zope] XML in Zope OK, I'll be happy to describe the problem. I'll try to be brief but clear. In the briefest terms I can come up with: I need a way of storing a document-like object in the ZODB which will be sufficiently structured to allow the selective display and replacement of its elements while allowing for the immediate display of its contents as a nicely formatted document in a browser. Now for the longer-winded version for those with the patience or curiosity to read more. I am building an application which is quite document-centric. When the client interacts with the application, he is building a "record" of an interaction with a patient. This interaction can extend over a period of days, so it needs to be able to be resumed. The application now consists entirely of HTML forms which trigger Python scripts that initially create and then update a DTML Method object. I embed formatting into the DTML Method so that when the user wants to see a report of the patient interaction, all I have to do is give him a way to view the document. The client *loves* the application as it has developed so far, in part because as the code updates the DTML Method during the patient interaction, a supervising clinician can see the progress of the interaction as it develops. So I prefer not to lose the ability to allow the supervisor to see the document the code is generating, but I may have to do so. When the interaction with the patient proceeds linearly and in one session - which is most often the case - this system works like a charm. But if for any reason the interaction gets interrupted, my scripts, which always merely *append* information to the end of the document as each step proceeds, are not now capable of a smooth resumption in place. This would require, e.g., that information now stored in the DTML Method be parsed out to supply initial values to fields on the interactive form that have already been completed. That is the minimum I need, but as I have been thinking about the design, I've decided I actually need much more than that. I believe the best way to accomplish that objective of maximum flexibility for the user is to use a more structured approach to the document. As I see it, I had three alternatives: (1) parse the text in the DTML Method to pull out and rewrite pieces as needed; (2) use properties of the DTML Method in addition to text content and link the two; (3) go to XML to take advantage of readily available Python techniques for managing the structured data while being able to use XSLT to retain the ability to show the document in process immediately on demand. I spent some time looking at the first option and decided it was going to be terribly inefficient. I would in essence have to define my own start/end tags for each element of the document (which I could use comments for) and then manually parse them. Ugly. The second approach also felt inefficient because I would be storing all of the information in a document twice, once as a document (so that it could be displayed quickly on demand) and once as properties (so they could be retrieved and replaced as needed). I have not completely discarded that approach but XML seems more promising. I am fully aware of the horrendous overhead associated with XML documents but these documents are quite small (3-4 pages on average, printed) and always identically structured. With Python's excellent XML support, I have already gotten some very good routines written to parse such documents. My problem is that when I try to translate that code to Zope External Methods, they don't work and debugging them in Zope is a nightmare. I am learning, and I am open to any suggestions or corrections to my thinking. I appreciate the group's patience with me and any ideas you have. At 09:18 AM 5/15/2002 +0100, Chris Withers wrote: >Dan Shafer wrote: > > > > I had in mind to use DTML documents as the storage mechanism for the main > > documents at the core of an application I'm building for a client, but it > > turns out they are going to need to do some things that would be pretty > > cumbersome in a DTML document or method. So I'm investigating using XML for > > these documents. > > > > Searching zope.org turns up a lot of stuff about XML but, as far as I can > > tell, only one product: XMLDocument. But it describes itself as out of date > > and replaced by ParsedXML, which, as far as I can tell, hasn't had a > > product release yet. > > > > I can't tell from the ZQR which XML implementation it is documenting. > >XMLDocument is out of date. >The ZQR is no longer maintained. >ParsedXML is dead as it currently has no maintainer (well, bar Martijn, >who's busy on the >Zope 3 effort and not subscribed to this list...) > >To be honest, if you explained the problem we might be able to suggest an >alternate >solution... > >cheers, > >Chris - XML: the world's most inefficient data transfer format _______________________________________________ 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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Zope May 2002