June 2002 - Zope - Zope lists

Count results of ZCatalog query
by Juergen R. Plasser / Hexagon 14 Jun '02

14 Jun '02

How can I count the results of a ZCatalog query? This must be a simple thing... I have tried <dtml-var "_.len(Catalog)"> but with no success. Juergen

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Localizer problems with 'myMessageCat'
by Nico de Boer 14 Jun '02

14 Jun '02

Hi, I'm trying out the product Localizer Version 0.8.1. I am following the Tutorial from CodeSyntax available at: www.zope.org/Members/CodeSyntax/DTML_Localizer I only have some parts that I don't understand: At Tip # 1: Then, go to the Localizer folder, choose properties, and add selected_language to accept_methods What is Localizer Folder here, because I can't find the property accept_methods and so can't add selected_language. At Tip # 4: In the form the following call is made: <dtml-var "myMessageCat(title, id)"> But I can't find the method myMessageCat in the code. I get the following error: NameError: global name 'myMessageCat' is not defined Can somebody help me with this problems? Greetz Nico

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Re: [Zope] Zope 2.5 and TransparentFolder incompatibility
by Terry Hancock 14 Jun '02

14 Jun '02

Hi, I've been following this thread as it may have very bad consequences for me. I'm currently developing a product which relies Transparent Folders, and I've been told that I need to upgrade to avoid some bugs, which I've been encountering in development (Python 2.1.1 + Zope 2.4.3, which is supposed to have known problems). I was planning to upgrade straight to Python 2.1.3 + Zope 2.5.1, especially since I have an application for "TempFolders", at least as soon as get to a reasonable breaking point. (I'm fairly paranoid about upgrading dependencies in the middle of development, as it usually breaks stuff, and I really don't need (my bugs) x (other bugs) to solve!) Eliminating TFs would be a major pain, and for anyone in the "don't use them, they're bad" camp, I challenge you to find a better solution (yeah, okay, I'll say it's a "friendly" challenge, but still...). Let me illustrate what I mean: APPLICATION #1: Clearing mgmt folders ------------------------------------- This is the one everyone talks about, but I will emphasize here that this is not merely for my benefit, but also directly visible to my users (who will often be customers). The site, as designed, will have top-level common areas, as well as subfolders for particular users. Some areas (home folders) will be flat, but others (project folders) will be self-similar recursions of the top folder). The site is image-intensive, so we have images stored in subfolders, generally according to their function. For illustration, I'll only use the "Image" folder, but there are others. Potentially, we have something like this: TOP | +------------------+-------------------+ | | | | | Image Project Home | | +------+ +-------+ | | * | | Image Image Sub- Project | +------+ * | Image In this illustration "*" represents a collection of various other files, and all the "Image" folders are transparent. Because of TFs, a user can put their own images in Image which will overload or complement images in the image directories above them. So, ordinary users can use their own images and anything in the common image directory, while projects can use the public images, provide their own for subprojects, or use specialized ones in each subdirectory. This is important because the different locations are subject to different permissions: only the user (and an administrator) can access a users folders, and only a project moderator can access project files -- which is self-similar in the sense that the moderator can assign a sub-moderator to a sub-project. This has various consequences, including legal ones: Under one of the not-so-evil clauses of the DMCA, I can't be (or can't easily be) sued for copyright violations that a user makes. Less controversially, that user may have legitimate copyright or trademark protection on their images and not want to share them with the whole community (e.g. personal avatars or commercial logos). In any case, I don't want to force them to share all their content by putting it in the top level shared folder. Without TFs, however, if the user added an Image directory, it would shadow the global one, and that's not what we want. There is a workaround, in that I can *tell my users* to use a URL like this: Image/Home/<username>/Image/ instead of Image/ I emphasize that this is not a requirement on me, the developer, but on my user, "For whom all things must be made simple". Also, in contrast to the filter argument made earlier in this thread, this CANNOT simply be the result of filtering for "Image" filetypes. There are many types of images, some of which shouldn't be mixed into this hierarchy (graphical buttons, for example). Besides, it gets worse, with ... APPLICATION #2: Organizing content classifications -------------------------------------------------- Now, I mentioned that we have shared content (both at the top level and in projects). That content is not all under the same license terms, though -- some may be Public Domain, BSD-type, GPL, DSL, etc. So, we subdivide the Image folder(s). Furthermore, the art is usually in collections, not just random isolated images. So, for example I have a collection of art based on Tenniel's Alice in Wonderland illustrations (thank you, Project Gutenberg!) and another set collected by the University of Oldenberg in Germany, based on scans of "old, heavily illustrated children's stories". So I'll put these two directories beneath PubDom -- the other areas will likely acquire such divisions as well: Image | +------+------+------+------+ | | | | | PubDom GPL BSD DSL CF | +--------------+-------------+ | | * AliceTenniel Oldenberg Now, *these* are *all* transparent folders, because I want to be able to get the images by simply searching "Image", not by having to remember each subdirectory. If I want to do this with plain Zope acquisition, I'll need to tell my users to thread through all possible directories, like this: Image/PubDom/AliceTenniel/Oldenberg/GPL/BSD/DSL/CF/Home/<username>/Image (Note that it's easy to screw this up, Image/PubDom/GPL/BSD/DSL/CF/AliceTenniel/Oldenberg/Home/<username>/Image won't work, for example). Which I again emphasize, is a requirement on my user, not just me. The directory tree above allows me to put collected attribution information into a README or some such, without necessarily having to verify that each image has attribution information in a property, for example. Furthermore, this hierarchical arrangement is much more effective for users to browse the image collection (it's trivial to write a browsing interface in Zope to examine Image directories recursively, I'd have a much harder time using filters of some kind). Now, you may think that this is all "just cosmetic" or that I shouldn't worry about such trivialities, and just work around this problem, but really, *I* think I need transparent folders. --- So, if my use-case convinces you, can I please ask what the deal is with Transparent Folders in Zope 2.5? Can I upgrade, or what? I actually don't care too much about Session tracking, though I would really like to use TempFolders, as they solve a server-side caching problem I'd like to do in Zope (instead of relying on a front-end cache, for example). That's another problem entirely, but a constraint nevertheless. I've also had problems subclassing "Folder", even in very trivial cases (e.g. I have one object that if I call "absolute_url" on it, gives me the parent folder's URL instead of its own -- is there some step I'm missing? I haven't even overloaded the __init__ -- I've just subclassed folder, changed the meta_type and added a couple of methods which I'm pretty certain are not overloading anything -- manage_addFolder() seems to be very simple, especially if you eliminate the "Create User Folder" and "Public Interface" options, so I don't see how I can be missing anything.) So I'm a little leery of recoding a specialized TF for my purposes, as it certainly seems there are lurking problems to bump into. Should I try Python 2.1.3 + Zope 2.4.4? Or can I go ahead with Python 2.1.3 + Zope 2.5.1? I've already run into bugs with my current configuration (at least I *hope* they're the known Python/Zope bugs!). Anyway, any ideas, advice, or comments would be appreciated. Cheers, Terry -- ------------------------------------------------------ Terry Hancock hancock(a)anansispaceworks.com Anansi Spaceworks http://www.anansispaceworks.com P.O. Box 60583 Pasadena, CA 91116-6583 ------------------------------------------------------

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here/Title returns too much -- doc name and status
by James Hazard 14 Jun '02

14 Jun '02

I'm working in CMF, customizing main_template. I'm simplifying the presentation and want to show only the document name and not its status (Created by jgh. Last modified 2002-06-13 17:20:41.) In my slash and burn way, I've narrowed this down to the following bit of code, which produces the Page Title as expected and desired, but throws in the status: <div metal:define-slot="header"> <h1 id="DesktopTitle" tal:content="here/Title"> Page Title </h1> </div> Any ideas why?

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Can't customize scripts in CMF/plone
by Noel Burton-Krahn 13 Jun '02

13 Jun '02

Zope-2.5.1-x86, CMF-1.3beta, CMFPlone-0.9.9 I'm trying to customize the plone search form. If I "Customize" portal_skins/generic/search, then I get this error when I do a search: Site Error: Error Value portal_url not found in 'portal_url', at line 25, column 13 That error is in standard_html_header. Then, I tried customizing portal_skins/custom/doFormSearch, but non of my changes had any affect. I think the customize method only works for page templates, but is broken for scripts and portal tools. Am I missing something?

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RE: [Zope] Using Java objects with the JPE
by Riggs, David 13 Jun '02

13 Jun '02

I've now got Zope interacting with Java objects (and very smoothly in fact). Since I havn't seen any good info on setting this up, and since the JPE is very poorly documented, here's how I did it: 1. Acquired binaries of the JPE. Only source code is provided on the website, and the python modules must be built with MS Visual C, so I was not able to compile this myself. Chris Withers was kind enough to provide a compiled version to me, I'll happily send this out to anyone that would like it. 2. Dropped the python module directory (called 'java/') into zope/lib/python/. 3. Added my Java classes and .jars to my CLASSPATH, in this case I just added it to the beginning of the Zope startup batch file. 4. Created a small python script (TrainingView.py) and dropped it into zope/Extensions/. It looks like this: import java from java.jvm import isInitialized, initialize from java.jobject import importClass, Jobject, Jstring, javalib if not java.jvm.isInitialized(): print 'JVM not initialized, initialize()ing...' java.jvm.initialize() def getTrainingView( action='', user='', pass_='' ): TrainingView = importClass('com.saic.ewing.training.TrainingView') myObj = TrainingView() return myObj.getTrainingView( Jstring(action), Jstring(user), Jstring(pass_) ) 4.5 Restart Zope :) 5. Create an external method that looks like this: ID: trainingApp Module Name: TrainingApp Function Name: getTrainingView 6. I post to the external method with a form that has eg. <input name='action' type='text'> and the String that my Java object returns is displayed! This particular Java object does a remote procdure call via SOAP, then does an XSL transorm on some XML and spits HTML back as a string. Good stuff! David A. Riggs Science Applications International Corporation - SAIC (304)284-9000x201 driggs(a)asset.com -----Original Message----- From: Dieter Maurer [mailto:dieter@handshake.de] Sent: Wednesday, June 12, 2002 1:56 PM To: Riggs, David Cc: zope(a)zope.org Subject: Re: [Zope] Using Java objects with the JPE Riggs, David writes: > I'm trying to access some existing java objects through python with the > python JPE library. I'm able to use these objects fine from the python > command line, but I've spent hours trying to set things up with zope and > have had no luck. > > Where do I put the JPE libraries for Zope to find them? I've got them > under lib/Python/java right now. Do I need to add them as a Product? Please search the mailing list archives (or the Python documention) for PYTHONPATH. It is this environment variable that you need to extend to let Zope find the Python modules and share objects of JPE. I did not yet use JPE. Thus, it might also be the other way round. > Where do I put my java classes for the JPE to find them? I'm assuming > that they just need to be relative to my system CLASSPATH. Yes, try this. > Like I said, I've got everything working from the command line... How do you do it? Do you start Python and then load a JPE module or do you start JPE and tell is to activate a Python interpreter? Dieter

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Monitoring transversal
by Kevin Carlson 13 Jun '02

13 Jun '02

Hi all, I have a situation where I need to be able to handle a URL like http://www.xxx.com:8080/<arg> where <arg> is somehow trapped by a python script. I know this type of thing can be done with a ZSQL method to pass in a single argument, but I am not aware of how to do this otherwise. Any ideas on how to do this? Thanks, Kevin

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hi,all
by William Cai 13 Jun '02

13 Jun '02

I have installed zope on my computer(os:windows 2k).when I open http://localhost:8080/manage with IE,I can see the zope management interface.But I can't find how to add a object to my site. I have created a webmaster as manager, and login with this username, but no help. who can tell me how to do? It doesn't like www.freezope.org. _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx

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Versions and ftp and testing
by Richard Wesley 13 Jun '02

13 Jun '02

I am working on a Zope application and I am thinking it is time to start using versions. My first attempt ran into some interesting problems and I was hoping that someone could help me out here. - How do I point a second browser at the version I am working with? - How do I point my external editor at the version I am working with? TIA, - rmgw <http://www.trustedmedianetworks.com/> ---------------------------------------------------------------------------- Richard Wesley Trusted Media Networks, Inc. "I found it at the bottom of a locked filing cabinet, in a disused lavatory with a sign on the door saying 'Beware of the leopard.'" - Douglas Adams, _The Hitchhiker's Guide to the Galaxy_

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file upload formular
by Simon Brun 13 Jun '02

13 Jun '02

hi all For our intranet I'm going to improve the file upload. In the past, the workers had to upload their files via the ZMI. They had to add some properties (like author, keyword, etc.). Afterwards some dtml-methods listed the content of the directories by mapping the properties of the documents. I now want to create a html-form which help the people to upload their files. In this form they have to insert the properties and after pressing the submit button, the file should be uploaded into Zope. I'm sure this was done by other users before, but I didn't find something. Any good ideas or code out there? regards sim

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