January 2000 - Zope - Zope lists

Zope vs J2EE
by Nemeth Miklos 07 Jan '00

07 Jan '00

In our department I have decided (as a CTO) to use Zope for an ecommerce application server. And I also would like to use it for another application for a customer. I will have a presentation about Zope and our plans in a 3-day technical conference of our corporation. Can I have some (primarily technical) arguments why Zope is better to some (especially Java-based) specific web application server tool (WebSphere, Oracle Application Server, Oracle8i, NetDynamics, etc)? I'd be very glad if some of you share his thoughts about the topic. NM

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ZOracle on RedHat 6.1
by Mattias Kunkel 07 Jan '00

07 Jan '00

I'm trying to use ZOracleDA 2.1.0 or ZOracleDA 2.2.0b1 on my RedHat 6.1 System. I have installed Oracle 8.0.5.1. I can compile and 'python DCOracle_test.py user/pw@sid' works fine. But if I try 'Control-Panel -> Products -> ZOracleDA' I just get this output: ZOracleDA Import Traceback Traceback (innermost last): File "/usr/share/zope/lib/python/OFS/Application.py", line 387, in import_products product=__import__(pname, global_dict, global_dict, silly) File "/usr/share/zope/lib/python/Products/ZOracleDA/__init__.py", line 91, in ? import DA File "/usr/share/zope/lib/python/Products/ZOracleDA/DA.py", line 91, in ? from db import DB File "/usr/share/zope/lib/python/Products/ZOracleDA/db.py", line 89, in ? import DCOracle, DateTime File "/usr/share/zope/lib/python/Products/ZOracleDA/DCOracle/__init__.py", line 52, in ? import sys, Buffer ImportError: No module named Buffer Can anybody help me? Mattias

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Re: [Zope] Zope and Apache: root of ZODB reference problem?
by Chris McDonough 07 Jan '00

07 Jan '00

Darran, I think your mailer has a Y2K problem as your message header is as follows: Subject: [Zope] Zope and Apache: root of ZODB reference problem? Date: Fri, 7 Jan 100 17:48:55 +1100 (EST) From: Darran Edmundson <dee124(a)rsphy1.anu.edu.au> To: zope(a)zope.org Have you tried removing the terminal slash in the rewrite rule? Darran Edmundson wrote: > > Hi Zopesters, > > We have a problem with our Zope under Apache installation. > Namely, the rename|cut|copy|delete|export buttons do not work > for checkbox selections in the root of the ZODB. > > [check any item in the root, ie. "standard_html_header"] > [hit any of the above-named buttons, ie. "rename"] > > Not Found > The requested URL /optics was not found on this server. > > The problem seems to be a missing terminal slash in the > URL generated by the management interface web pages. That > is, on our system Apache requires URLs of the form > http://our.ip.address/optics/ to find the Zope cgi script. > The rewrite rule for our installation is: > > RewriteRule ^/optics/(.*) /usr/local/apache/cgi-bin/Zope.cgi/$1 > [e=HTTP_CGI_AUTHORIZATION:%1,t=application/x-httpd-cgi,l] > > Any ideas about how to circumvent this problem? (A non-Zope aside, > can I intercept the URL that is being generated by my browser > when using forms if I can't get access to the Apache logs?) > > Any help is much appreciated. > > Darran. > > _______________________________________________ > 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 ) -- Chris McDonough Digital Creations, Inc. Zope - http://www.zope.org

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Debugging permission errors: min permissions to add ZClass instance.
by R. David Murray 07 Jan '00

07 Jan '00

I know I've seen this question asked before, but I couldn't find it (is there a better way to search the mailing list archives than the one on the mailing list index page?). I've got a ZClass, and I'm trying to set things up so that a certain set of authenticated users have permission to add new instances of the class and to edit just those instances they have created. I assume that the latter will automatically be possible since they will be owner of the object created. But I can't even get the add to work, despite following the ZClass documentation on setting up permissions. My test user who has the "Add..." permission gets an 'authorization failed' when I try to add an instance. So I'd like to see exactly where the permission check is failing. How do I get Zope to tell me what permission it was looking for when the permission check failed? I also don't understand what the define permissions screen on the product containing the ZClass does; the current Content Manager's Manual's coverage of it is very sparse and uniformitive. I tried mapping "Add..." to "Add..." there, but that didn't help any. And another oddity while I'm here; the role that is given "Add" permission for my class does *not* have Add permission for anything else, yet when a user with only that role goes to the management screen for the folder he is presented with *three* add choices, the other two being "Add ZGadfly Database Connection" and "Add ZPyGreSQL Database Connection". Is this maybe a clue? FYI I'm running this under 2.1.2, with most of the stuff having been created under 2.0.1. --RDM

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Acessing Zclass property outside of class instance.
by R. David Murray 07 Jan '00

07 Jan '00

This should be a simple question, but my understanding of acquisition and name spaces isn't good enough to figure out the answer yet. I have a ZClass, and I have assigned a couple properties to a 'constants' propertysheet. I want to access those constants from a page that is not an instance of the ZClass. Actually, even simpler than that, I also want to access that property from the 'add' method of the product the ZClass was created in. What's the syntax for doing both of these? NB: the non-add case is a DTML method that is in a virthost folder created with the SiteAccess product, so I guess I need some sort of Zope object equivalent of an absolute URL to reference the property? If I could create a Product/ZClass inside a virthost folder then I'd just put the constant property at the top level folder of the virthost, but I can't do that... --RDM

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pgci problem with Zope-1.10.2 and pdflib
by Nuno Maltez 07 Jan '00

07 Jan '00

Hi, I'm having a problem trying to create a with pdflib and pcgi. I'm using Zope 1.10.2 on Linux and using an external method to generate a pDF file which is then returned with an 'application/pdf' mime type. Using ZopeHTTPServer I found no problems at all, but in this site I need to use Apache (Zap). However, I found that with Zap, instead of a nice PDF file I get a pgci error: Fri Jan 7 02:23:35 2000 pcgi-wrapper: unexpected out-of-bound data in stdin t[0] = 80 I think I've traced it to the PDF_close() statement. If I return from the external method before closing the PDF, I get my file but, of course, not complete, so it's no solution. Has anyone experienced any similar problems? Has anyone tried to use pdflib with Zope and Apache? Thanks in advance, Nuno

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Re: Testing products outside of zope (i.e., in python interpreter)?
by Andrey V Khavryutchenko 07 Jan '00

07 Jan '00

Hi, Joe! >>>>> "JG" == Joe Grace writes: JG> Hi, is there a way to test zope products outside of zope? I find that JG> I'm restarting zope just to update my product and test it, and that JG> seems painfully slow. I'd like to just run code outside of zope JG> interactively in a shell. Is that possible? I'm trying with Boring JG> product (super simple) and tripping over the Persistence import JG> Import Error: cannot import name Persistent JG> I've run into this problem before and assume that Persistent is a C JG> function. How do I make it available to my python interpreter? Add the directory, where it's located to sys.path (in Python) or PYTHONPATH environment variable. JG> I couldn't figure out where z2.py gets it, but I also am just dealing JG> with the python environment for the first time. I'm using Xemacs (on JG> NT) if that makes giving some tips any easier. :-) JG> I'll take pointers, tips, how-to reference, anything at this point. JG> I'd be happy to make a How-To if I get enough information. Right now I'm using two-stage aproach. First I build the Data.fs of my site using following script: #!/usr/bin/env python # -*- python -*- file # $Id: build.py,v 1.1.2.1 2000/01/06 15:37:02 akhavr Exp $ # # Copyright (C) 2000 by Andrey V Khavryutchenko <akhavr(a)compchem.kiev.ua> import os, sys, getopt verbose=0 opts, args = getopt.getopt(sys.argv[1:],'v') for o, v in opts: if o=='-v': verbose=1 ZopeLibPath=os.environ['ZOPE_HOME'] sys.path=['', os.path.join(ZopeLibPath,'lib','python'), ZopeLibPath ]+filter(None,sys.path) import Zope root = Zope.app() import src os.chdir('src') src.build(root, verbose=verbose) get_transaction().commit() Then, I run test scripts like the following and compare their output to what it should look like. #!/usr/bin/env python # -*- python -*- file # $Id: register-user_correct.py,v 1.1.2.4 2000/01/06 22:15:26 akhavr Exp $ # # Copyright (C) 2000 by Andrey V Khavryutchenko <akhavr(a)compchem.kiev.ua> request = { 'first' : 'Andrey', 'last' : 'Khavryutchenko', 'email' : 'akhavr(a)compchem.kiev.ua', 'login' : 'akhavr', 'passwd' : 'abracada$%^ra', 'passwd2' : 'abracada$%^ra' } import init site = init.site from mkrequest import * print '*** Main page' site('/') site('/style_css') print '*** Select' site('/register') print '*** Register' site('/register/do' + mkrequest(request)) ==================== init.py #!/usr/bin/env python # -*- python -*- file # $Id: init.py,v 1.1.2.5 2000/01/06 15:37:00 akhavr Exp $ # # Copyright (C) 2000 by Andrey V Khavryutchenko <akhavr(a)compchem.kiev.ua> import os, sys, string ZopeLibPath=os.environ['ZOPE_HOME'] sys.path=['', os.path.join(ZopeLibPath,'lib','python'), ZopeLibPath ]+filter(None,sys.path) import ZPublisher, Zope root = Zope.app() def site(url, d=None): return ZPublisher.Zope(url, d=d) Hope this helps -- SY, Andrey V Khavryutchenko http://www.kbi.kiev.ua/~akhavr Software & SPI Engineer Visit my site Shick's Law: There is no problem a good miracle can't solve.

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Testing products outside of zope (i.e., in python interpreter)?
by Joe Grace 06 Jan '00

06 Jan '00

Hi, is there a way to test zope products outside of zope? I find that I'm restarting zope just to update my product and test it, and that seems painfully slow. I'd like to just run code outside of zope interactively in a shell. Is that possible? I'm trying with Boring product (super simple) and tripping over the Persistence import Import Error: cannot import name Persistent I've run into this problem before and assume that Persistent is a C function. How do I make it available to my python interpreter? I couldn't figure out where z2.py gets it, but I also am just dealing with the python environment for the first time. I'm using Xemacs (on NT) if that makes giving some tips any easier. :-) I'll take pointers, tips, how-to reference, anything at this point. I'd be happy to make a How-To if I get enough information. Thanks in advance! = Joe =

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minor fastcgi bug?
by Sam Gendler 06 Jan '00

06 Jan '00

has anyone else seen a bug where apache sends HTTP headers as the document body every once in a while, when using fastcgi? I am actually using fastcgi within a Virtual Host. I am curious as to whether anyone else is seeing this? --sam

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RE: What does "this()" return?
by Hung Jung Lu 06 Jan '00

06 Jan '00

>From: Nemeth Miklos <nemeth(a)iqsoft.hu> > > Is there any doc on "this()" or "id()"? >I think you explored this teritory. YOU should create a how-to on the >topic. Okie-dokie. But then I have to join zope as a member, huh? :) If you provide me with enough info on how to submit a how-to, I will make one. By the way, is it possible to set up some search features on the how-to's? With over 100 how-to's, it is a little bit painful to go through them. > > Sometimes learning a new software is > > not so much what you know to do, but what you know NOT TO DO. > > >That is why programmers do not like to learn new languages and tools. >That is why UNIX is forever. I guess there was a misunderstanding here. I am a programmer and I like to learn new language and tools. I am just making the comment that, as a programmer, it's often more important to know the limitations of a language/tool, than to know its capabilities. For instance, in Python you can't write the incremental operator i++. You write it, you run into a bug, and you waste your time. It's like when I was learning portuguese... I already knew spanish. The two languages are too similar, so instead of learning what words I can use in portuguese, I was learning what words I SHOULDN'T use, why I shouldn't use them, and what alternatives there were. :) > > Also, is there any documentation on calling DTML methods with arguments? >I > > know you can do it with "myMethod(_.None, _, arg1=val1, arg2=val2, >...)", > > but I'd like to know what the role of _.None is. (I know _ is the > > namespace...), that is, if I replace it with something like > > "myMethod(coolDude, _, ...)" what sort of catastrophe might happen. :) > > >This is completely new to me! Where did you learned it! >I thought I read or at least browsed all how-tos and Zope docs. Ha! After reading Zope E-group for a few months, I ran into a few messages giving out all kinds of undocumented features. For instance, the &dmtl-myVar; directive, which is equivalent to <dtml-var myVar>. I remember someone said that the _.None argument represents the "target object" for DMTL methods. Now, what is a target object, I don't know. :) regards, Hung Jung ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

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