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Zope/Python Error -- Please Help!
by Deb B. 06 Sep '02

06 Sep '02

Hello everyone. I'm new to this list and still a newbie to Zope/Python. I have spent weeks developing an intranet with the Python/Zope product. I had the pages designed, had certain products installed and customized to my liking, etc. and all was well but today I encountered what might have been a fatal error to Zope and now I cannot even access it through the management screen and python is returning a series of errors and then kicking out its connection to Zope. I have posted a file on the web that includes screen captures (I hope this is ok..I don't know what else to do!) that will hopefully provide someone who is far more advanced than I some insight to this problem and perhaps provide a resolution. It is a WordPad file and in it I also explain the events leading up to the errors, etc. as well as screen captures of the errors. I certainly appreciate any assistance anyone can provide... File locations: (Access to this file is only available to people with Yahoo! IDs) http://briefcase.yahoo.com/bc/intranetdeb/lst?.dir=/Zope and http://groups.yahoo.com/group/zope (in the files area) --------------------------------- Do You Yahoo!? Yahoo! Finance - Get real-time stock quotes

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Global constants in Zope
by Borislav 06 Sep '02

06 Sep '02

I'd like to define global constants for my web application built with Zope but I'm not sure in what kind of object to define them. Is there any way to import an external python module in scripts, ZPTs, etc? Are there alternative approaches? Thanks in advance. --Borislav

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RE: [Zope] Adding FTP and WEBDAV support to Product
by Chris A. Bruce 06 Sep '02

06 Sep '02

Thanks a lot. I do need to special handling. I will look at the classes and methods you listed below, but any examples would be great! Regards, Chris -----Original Message----- From: Tino Wildenhain [mailto:tino@wildenhain.de] Sent: Fri 9/6/2002 11:47 AM To: Chris A. Bruce Cc: Subject: Re: [Zope] Adding FTP and WEBDAV support to Product On 2002.09.06 20:21 Chris A. Bruce wrote: > Can some please tell me what I need to include with my product code to > support FTP and WEBDAV. I have never developed a product before, and > I am not sure which classes I should extend, or if there is somekind > of interface I need to use? > > Any help is greatly appreciated! Hi Chris, it depends on your product if it needs special handling of WEBDAV and FTP. For most cases, ie edit content, download source Zope handles it already if you subclass some of the standard classes like Folder, Objectmanager or PageTemplate. If you need special handling, look for manage_FtpGet (or so ;) in the code of these products and their parents. If you want to customize creating of objects of your classes via WebDAV and FTP, you should look at the NullResource handling of ObjectManager and the __getattr__ method. Unfortunately it is a bit overcomplicated in this area. I can try to compile some samples of what I've done with it, if time permits. Regards Tino

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Using a ZCLass property as TALES expression ?
by Gilles Lenfant 06 Sep '02

06 Sep '02

Hi, I'm actually building a ZClass for which some validation rules may be customized object per object. I think that using a TALES expression for that purpose may be a good idea, but I can't find a way to execute a TALES expression in the context of the current object, and get the result. Any idea ? Thanks in advance. --Gilles

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RE: [Zope] Adding FTP and WEBDAV support to Product
by Chris A. Bruce 06 Sep '02

06 Sep '02

Exactly, except for the evil commercial propriety product--no intentions of closed source ;) Thanks for the info. Chris -----Original Message----- From: Nils Kassube [mailto:nika@comunit.de] Sent: Fri 9/6/2002 12:14 PM To: Charlie Reiman Cc: Chris A. Bruce; zope(a)zope.org Subject: Re: [Zope] Adding FTP and WEBDAV support to Product "Charlie Reiman" <creiman(a)kefta.com> writes: > I'm not sure what you mean. Zope supports those out of the box. You > actually have to disable them if you don't want them. They usually > don't figure into Product development anyway, just web > development. You need file system access to build products. Zope's He probably wants to do what he said he wanted to do: support the import and export of objects via FTP and WebDAV. An example: You can have a product, let's call it eDitoImage, that offers some methods for doing things with images. Internally it is, among other things, a container for multiple images in different screen resolutions and image formats. For the outside world, however, for the user trying to upload an image file via WebDAV or FTP or HTTP, it looks like a single image file. eDitoImage is a evil commercial, proprietary product, but you _can_ read the source code of the Photo(Folder) product. Try searching on the Zope site. A more abstract example: You've got a very complex object but you want users to be able to export and import instances as XML files. Chris A. Bruce wrote: >> Can some please tell me what I need to include with my product >> code to support FTP and WEBDAV. I have never developed a product >> before, and I am not sure which classes I should extend, or if >> there is somekind of interface I need to use? You will have to learn a thing or two and read a lot of source code :-) Fortunately, it's not really difficult. Read http://www.zope.org/Documentation/Books/ZDG/current/index_html WebDAV and FTP support is explained here: http://www.zope.org/Documentation/Books/ZDG/current/ObjectPublishing.stx

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Adding FTP and WEBDAV support to Product
by Chris A. Bruce 06 Sep '02

06 Sep '02

Can some please tell me what I need to include with my product code to support FTP and WEBDAV. I have never developed a product before, and I am not sure which classes I should extend, or if there is somekind of interface I need to use? Any help is greatly appreciated! Thanks a million, Chris

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check permission problem
by John Hunter 06 Sep '02

06 Sep '02

I want my standard_html_header to render differently if a person is a manager or a user. I have in the header <dtml-if "_.SecurityCheckPermission('View', login_py)"> Do something <dtml-else> <form action="login_py"> <input type="submit" value="Member login"></th> </form> </dtml-if> login_py is simply the line container.REQUEST.RESPONSE.redirect(container.REQUEST.HTTP_REFERER) but has the View permissions set to 'Manager/Owner/Authenticated'. When they click on the submit button, they will be prompted for a username and pass since Anonymous does not have view permission for login_py. What I want is for every page to have a login button if the user is not logged in, and display member information if the user is logged in. What happens instead is that the anonymous user gets asked for a password when visiting the site home index_html, which includes the standard_html_header. It appears that zope is trying to access the contents of login_py in the call to <dtml-if "_.SecurityCheckPermission('View', login_py)"> rather than simply check the permission, which surprises me. When I refuse to enter a password for the main site (which should have anonymous access and *does* without the SecurityCheckPermission part, I get the following traceback Traceback (innermost last): [ ... snip ...] File /workn/Zope-2.5.1b1-src/lib/python/DocumentTemplate/DT_With.py, line 76, in render (Object: site_params_py) File /workn/Zope-2.5.1b1-src/lib/python/DocumentTemplate/DT_Let.py, line 76, in render (Object: standard_header_table_params="'width=140 border=0 cellpadding=2 cellspacing=0'") File /workn/Zope-2.5.1b1-src/lib/python/DocumentTemplate/DT_Util.py, line 153, in eval (Object: _.SecurityCheckPermission('View', login_py)) (Info: login_py) File /workn/Zope-2.5.1b1-src/lib/python/OFS/DTMLMethod.py, line 151, in validate (Object: index_html) Unauthorized: You are not allowed to access login_py in this context Advice warmly welcomed, John Hunter Zope Version : (Zope 2.5.1b1 (source release, python 2.1, linux2), python 2.1.3, linux2) Python Version: 2.1.3 (#1, May 31 2002, 14:37:05) [GCC 3.0.4] System Platform linux2

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Zope crashing...
by Dan Jacobs 06 Sep '02

06 Sep '02

OK, a while back I sent a mail to this list about my zope install crashing a few times a week. This time I have more info. Zope 2.5.1, running on Slackware. I run zope like this; ./start > zope.out 2>&1 & So now I can see the errors... The last errors I get before it dies are here; 2002-09-05T00:55:30 ERROR(200) ZServer uncaptured python exception, closing channel <ZServer.HTTPServer.zhttp_channel connected 209.170.209.7:1931 at 0x8cd27c4channel#: 885 requests:> (socket.error:(113, 'No route to host') [/usr/local/zope/ZServer/medusa/asynchat.py|handle_read|82] [/usr/local/zope/ZServer/medusa/http_server.py|recv|420] [/usr/local/zope/ZServer/medusa/asyncore.py|recv|357]) ------ 2002-09-05T00:56:36 ERROR(200) ZServer uncaptured python exception, closing channel <ZServer.HTTPServer.zhttp_channel connected 209.170.209.7:1930 at 0x8f89404channel#: 884 requests:> (socket.error:(113, 'No route to host') [/usr/local/zope/ZServer/medusa/asynchat.py|handle_read|82] [/usr/local/zope/ZServer/medusa/http_server.py|recv|420] [/usr/local/zope/ZServer/medusa/asyncore.py|recv|357]) Any ideas? Oh and Shana Tova. dj - Dan Jacobs - 07956 246 659

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Re: OT: HTML
by Paul Tiemann 06 Sep '02

06 Sep '02

(Off topic warning! It's about an HTML posting solution...) It seems HTML posting is a frequent problem on the list, enough to generate occasional threads like this one... Why not filter it out at the source? From the mailman faq: Q. My users hate HTML in their email and for security reasons, I want to strip out all MIME attachments. How can I do this? A. Mailman 2.1 will probably have this feature built-in, but for now you can use add-on tools such as demime or stripmime. More information on these tools can be found at: (Stripmime) http://www.phred.org/~alex/stripmime.html (Demime) http://scifi.squawk.com/demime.html <snip> Etienne is supplying both a plain text and HTML version of the message. Please configure your email reader to display the plain text part in preference. Etienne and others should not post HTML, neither alone nor together with another format. At least I refuse to read messages containing HTML: they are often four to ten times larger than necessary. And, unfortunately, my email reader insists to use the highest quality variant present in the message. Thus, they are killed unread. </snip>

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Mapserver and Zope
by Sven Jacobi 06 Sep '02

06 Sep '02

Hello, I´m trying to use Mapserver -- a open-source GIS-tool -- inside Zope and I would be glad to get some honts of some who have experience with that... I have already "swigged" mapserver to Python and now I think I have to wright Python scripts to access the methods/functions in the mapserver-library. Finally I have to add these Python-scripts as External Methods into Zope... Has anyone tried to use mapserver with Zope and is able to give me some advise whether my plan above is correct or totally rubbish.... Thanks in forward, Sven

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