August 2003 - Zope - Zope lists

Re: [Zope] Global Variable
by Mitch Pirtle 28 Aug '03

28 Aug '03

On Wed, 2003-08-27 at 16:00, rpenatez(a)lattice.com.co wrote: > How can I assign a value to one of this variables??? How can I recover the > variables values??? No problemo! Follow these steps: 1) create folder called "test" 2) select "test" folder 3) click on "Properties" tab 4) at the bottom of the Properties screen, create a variable: Name: tequila Value: mezcal 5) create a document in the test folder called "test" 6) the content of that document should look like this: <dtml-var standard_html_header> <h2><dtml-var title_or_id></h2> <p> This is the <dtml-var id> Document. </p> <p>My favorite tequila is <dtml-var tequila>.</p> <dtml-var standard_html_footer> See how that works? Now, here is something important to remember - this variable is available to everything in that folder. If something is ABOVE that folder, then Zope cannot find that variable for you (it is not in the path). Let me know if you still have problems, ok? -- Mitch

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keeping a python object alive across pageviews
by Kirk Lowery 28 Aug '03

28 Aug '03

We are integrating a postgresql linguistic database (text+metadata) with Zope. The database uses a search engine (http://emdros.org) which has a data model optimized to this task. emdros is written in C++ and we used SWIG (http://www.swig.org) to create python bindings. We're using page templates and external methods that call the emdros library to (1) establish a database connection, (2) submit the query to postgresql, (3) display the results by calling a response template. And we have run into an implementation question: Whenever an external method is used to call the search engine, the search engine then makes a database connection. Zope database adapters cannot be used here, since it is emdros -- not Zope -- that is managing the database. When that external method completes, the connection is lost. The more frequently that method is used, the greater the performance hit because of the overhead of restablishing the connection. Zope database adapters could solve this problem, but that would mean reimplementing the entire search engine in python as a Zope product, which doesn't seem to be a practical solution. When the external method is called, it creates a python object which houses the C++ connection object. The problem is that this Python object -- and hence the connection -- dies when the external method returns. So the question becomes: How do we keep a python object alive within the Zope process across pageviews? How do we associate such a python object with a particular user session? Our strategy at this time is to call an external method which does not return until it receives some sort of signal; rather it "busy-waits," thereby keeping the emdros connection object alive. Our question: Do we understand the issues correctly? Are there any other alternatives for keeping that external Python object alive that we should consider? All comments or suggestions are appreciated. TIA! Kirk Lowery <klowery(a)wts.edu> Ulrik Petersen <http://emdros.org/contact.html> -- Theorie ist, wenn man alles weiss und nichts klappt. Praxis ist, wenn alles klappt und keiner weiss warum. Bei uns sind Theorie und Praxis vereint: nichts klappt und keiner weiss warum!

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manage_clone problem, python script solution required please
by Nicolas LAURANCE 28 Aug '03

28 Aug '03

Hi zopers, Here is part of my script container.dest_folder.manage_clone(Item, Item.id) container.temp.manage_delObjects(Item.id) It works perfectly well for me when I'm logged in as manager, but my users get an error (prompted for password again) In the zope log I get : Module OFS.CopySupport, line 268, in manage_clone Module OFS.CopySupport, line 349, in _verifyObjectPaste Unauthorized: <zExceptions.unauthorized.Unauthorized instance at 0x8e83bec> It seems (thank you Dieter) that this is a know bug In searching the archives I found a solution with external method. Unfortunately, my configuration doesn't allow me to use those easily. I must find a workaround in python_script only. Of course I have set the proxy role of the script to 'Manager' I even tried container.dest_folder.manage_pasteObjects(container.temp.manage_copyObjects( Item.id)) container.temp.manage_delObjects(Candidat.id) In the zope log I get : Module OFS.CopySupport, line 146, in manage_pasteObjects Module OFS.CopySupport, line 349, in _verifyObjectPaste Unauthorized: <zExceptions.unauthorized.Unauthorized instance at 0x946862c>

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Zope 2.7.0b1 Released
by Chris McDonough 28 Aug '03

28 Aug '03

Zope 2.7.0 represents a concentration on software configuration and installation improvement over older versions. It requires Python 2.2.3. You may download Zope 2.7.0b1 from Zope.org: http://www.zope.org/Products/Zope/2.7.0b1/ Users should note that Python 2.2.3 is now the required platform. No binaries for platforms other than win32 will be offered for this Zope release. Particular features of interest in Zope 2.7.0: - DBTab integration (mounted databases for Zope). - New logging module support. - ./configure; make; make install installation from source - configuration-file-driven configuration - integration of ReStructuredText - OrderedFolder support - Many bugxfixes For more information on what is new in this release, see the CHANGES.txt and HISTORY.txt files for the release: http://www.zope.org/Products/Zope/2.7.0b1/CHANGES.txt http://www.zope.org/Products/Zope/2.7.0b1/HISTORY.txt For more information on the available Zope releases, guidance for selecting the right distribution and installation instructions, please see: http://www.zope.org/Documentation/Misc/InstallingZope.html Have fun! - C

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dtml-calendar: cannot update existing entry
by Daniel Huang 28 Aug '03

28 Aug '03

I'm following Jon Udell's tutorial (http://zope.org/Members/judell/CalendarTagExample) verbatim and have successfully created entries in the calendar (version 1.0.15) . However when I click on an existing entry and try to change the content, I get the following error: Error Type: Bad Request Error Value: Invalid or duplicate property id. Its happening in the editCalendarProperty code: /////////////// REQUEST = context.REQUEST if ( context.hasProperty(REQUEST['prop']) ): context.manage_changeProperties({ REQUEST['prop'] : REQUEST['propval'] }) else: context.manage_addProperty(REQUEST['prop'], REQUEST['propval'], 'string') return REQUEST.RESPONSE.redirect(REQUEST['BASE4']) //////////////// I think "context.hasProperty" always returns false and so it tries to add a duplicate property. But I dont see why. Has anyone run into the same issue?

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MemoryError: out of memory
by Rechenberg, Andrew 28 Aug '03

28 Aug '03

I am receiving this Exception when running Zope with CMF/Plone. Here are the details of my system: Dell PE2650 Dual 2.8GHz Xeon 4GB RAM Zope 2.6.1 Python 2.1.3 Here is the text of the exception: Traceback (innermost last): Module ZPublisher.Publish, line 98, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 39, in call_object Module Shared.DC.Scripts.Bindings, line 252, in __call__ Module Shared.DC.Scripts.Bindings, line 283, in _bindAndExec Module Products.PageTemplates.ZopePageTemplate, line 228, in _exec Module Products.PageTemplates.PageTemplate, line 96, in pt_render - <ZopePageTemplate at /Sherman/browse_links used for /Sherman/Categories/InternetLinks> Module StringIO, line 160, in getvalue MemoryError At the time of the exception the PythonService.exe was consuming 3984K of RAM and python.exe was consuming 125960K. I've checked Google and Zope.org for any related topics and have yet to find anything. Could someone please point me in the right direction on how correct this issue? Thanks, Andy. Andrew Rechenberg Infrastructure Team, Sherman Financial Group

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Re: [Zope] How do I ask Zope for the name of an uploaded file?
by Chris Beaven 28 Aug '03

28 Aug '03

I dunno why, someone decided it's dangerous...? I just have an misc.py bunch of external methods which handle all my common stuff like re, os.path.basename, the exuserfolder crypt, etc. >Great stuff! Many thanks; this is what I needed, and more. > >I dare a tangent: there are a lot of gaps in my Zope education. >I can understand that Zope doesn't give access to os, for secur- >ity reasons, but why is re unavailable? > > >

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RE: [Zope] Zope on SuSE 8.2 -- What initial user name and password do Iuse?
by Slack, Stephen 28 Aug '03

28 Aug '03

Hi Paul, I have set up 3 Suse 8.0 machines with Zope. One at my office and 2 at home (Sad, I know). Two of them I managed to connect straight to by setting up a new password with the zpasswd.py script in /opt/zope/utilities on Suse. The 3rd installation was a real bind. Nothing I did seemed to cure it. My final solution was to download the latest stable version of Zope, remove the original zope package with yast and reinstall the downloaded version. The installation was dead easy. As part of the process, Zope provides the admin user and passwd. Not an ideal solution.....but it was driving me up the wall and there did not seem to be many answers anywhere, just users with the same question! One positive side to this is that I have a machine at home running the most up-to-date version :-) Downside is that I lost the ability to "rczope start". Not a big problem as there is a start script in the Zope directory. If I ever get round to it, I will copy the rczope script from one of my other machines. Hope this helps. Stephen Slack Senior System Developer Allvac Ltd -----Original Message----- From: paulporter(a)buffalotalks.com [mailto:paulporter@buffalotalks.com] Sent: 21 August 2003 14:51 To: zope(a)zope.org Subject: [Zope] Zope on SuSE 8.2 -- What initial user name and password do Iuse? I've got Zope running but when I go to localhost:8080/manage I get a dialogbox wanting a user name and password. I didn't know what it was wanting so I created an "access" file using zpasswd.py but apparently it doesn't see this file because when I enter the user name and password that I put in the access file zope just regenerates the prompt dialogbox. I have made sure that I enter username/password exactly as found in the access file, I've tried copying th access file into the zope directory, that had no positive effect so I copied it into the zserver directory and that had no positive effect either. Could some kind soul please tell me how to get into Zope? Thanks for any help that might be offered. Paul _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )

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Translate IP to domain?
by Marc Burgauer 27 Aug '03

27 Aug '03

Hi For marketing reasons, we would like to be able to resolve the IP address of users filling in a web form to their domain name. Is there a Zope product or a python library that allows me to do on the fly IP-to-domain conversion? If the address can not be resolved, I'd like to "keep" the IP address in the result. Zope 2.3 (soon moving to 2.6) Solaris (intel) NO Apache yet, but maybe in the future! Cheers Marc

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Re: [Zope] Global Variable
by Mitch Pirtle 27 Aug '03

27 Aug '03

On Wed, 2003-08-27 at 16:15, rpenatez(a)lattice.com.co wrote: > How can I dynamically assign values to these variables??? It depends on what you are trying to do. I have never been fond of variables in DTML, and can say it is much, MUCH better in ZPT. To do it as part of the session (so each person browsing your site has a different value), you'd need to see this: http://zope.org/Wikis/DevSite/Projects/CoreSessionTracking/SessionManager I hope this helps. As I'm not sure what you are trying to do, I'm afraid to offer more advice - I don't want to give you a 'solution' that points you down the wrong path! -- Mitch

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