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RE: [Zope] New zope feature?
by Brian Lloyd 15 Jul '99

15 Jul '99

> >What about an DTML directive > > > > > > > >which would be a specialized if clause, which includes its > content only if > >the current caller has the specified role? > > You can already do this like so: > >  > ... >  > > You can also test for permissions on objects like so: > >  > ... >  > > Good luck. > > -Amos I just wanted to chime in here to note that, as of Zope 2, users can also have 'local roles', which are extra roles that the user is given in the context of a certain object. This means that a user may effectively have different roles at different points in the object hierarchy. This is important in terms of the example above, because if you just do:  ...  ...you'll get only the roles actually given to that user in the User Folder. To get the 'real roles' that the user has in the context of a given object (which takes into account local roles given in that object and in other object higher up in the hierarchy), you need to also pass in an object for context:  ...  The above basically says "tell me what roles the user has in the context of _this_ object". Amos, this should probably go into the local roles documentation, if it's not there already... Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Zserver Port
by Mike Owens 15 Jul '99

15 Jul '99

I have setup Zope 2.0 but I can't get it to use the default ports. I am using the -p 0 option but it insists on puting http on port 9673. What's the secret handshake to make it do what I want? -------------------------------------------- Mike Owens

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tree tag question
by Jens Vagelpohl 15 Jul '99

15 Jul '99

hi everyone, i was experimenting with the tree tag today (which i want to use for providing help page navigation) and i just copied and pasted all code snippets from the ZBook tutorial as well as arranged folders etc. as recommended. my setup is Zope 2.0.0a3 / Python 1.5.2 / RH6 could it be that this tutorial assumes an older version of Zope? Jens Vagelpohl here is the error that appears: Traceback (innermost last): File /usr/src/Zope-2.0.0a3-src/lib/python/ZPublisher/Publish.py, line 256, in publish_module File /usr/src/Zope-2.0.0a3-src/lib/python/ZPublisher/Publish.py, line 161, in publish File /usr/src/Zope-2.0.0a3-src/lib/python/ZPublisher/mapply.py, line 154, in mapply (Object: index_html) File /usr/src/Zope-2.0.0a3-src/lib/python/ZPublisher/Publish.py, line 98, in call_object (Object: index_html) File /usr/src/Zope-2.0.0a3-src/lib/python/OFS/DTMLDocument.py, line 181, in __call__ (Object: index_html) File /usr/src/Zope-2.0.0a3-src/lib/python/OFS/DTMLDocument.py, line 177, in __call__ (Object: index_html) File /usr/src/Zope-2.0.0a3-src/lib/python/DocumentTemplate/DT_String.py, line 514, in __call__ (Object: index_html) File /usr/src/Zope-2.0.0a3-src/lib/python/OFS/DTMLMethod.py, line 152, in __call__ (Object: standard_html_header) File /usr/src/Zope-2.0.0a3-src/lib/python/DocumentTemplate/DT_String.py, line 514, in __call__ (Object: standard_html_header) File /usr/src/Zope-2.0.0a3-src/lib/python/OFS/DTMLMethod.py, line 152, in __call__ (Object: help_menu) File /usr/src/Zope-2.0.0a3-src/lib/python/DocumentTemplate/DT_String.py, line 514, in __call__ (Object: help_menu) File /usr/src/Zope-2.0.0a3-src/lib/python/TreeDisplay/TreeTag.py, line 151, in render (Object: Outline) KeyError: Outline

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Status of DAs
by Christopher Petrilli 15 Jul '99

15 Jul '99

OK gang, I've been beating my head against all the DAs of late, looking for thread safety issues (the long and the short is nothing is currently fully thread safe), however, as you read the attached document, you'll understand that getting them to work in a functional fashion is not going to be hard. We will be releasing fixed versions of Oracle, ODBC and perhaps one other in the very near future (this is my next task). If you see any glaring errors, please let me know, or if you know of tricks related to making something work in a thread-safe fashion, please let me know. Chris -- | Christopher Petrilli Python Powered Digital Creations, Inc. | petrilli(a)digicool.com http://www.digicool.com

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[sort-of offtopic] cookies, http, and https.
by Anthony Baxter 15 Jul '99

15 Jul '99

[kinda not related directly to zope, but indirectly, it is the sort of thing that people using zope are likely to hit. hit 'delete' if you're easily offended by off-topicness] Ok, so I have a number of sites in the domain ekno.lonelyplanet.com. I want to share cookies amongst them, so that the user only has to log in once, and the cookies (with a 30 minute lifetime) will pass that on to the others. Problem: one of the sites is http, the other https. Setting a cookie from the http site with a domain of '.ekno.lonelyplanet.com' _should_ result in it also being delivered to the https site, but doesn't. As far as I can tell, both Navigator and IE are refusing to send the cookie set from the http site to the https site. Presumably this is some poor idea of security. Has anyone else seen this, and, more importantly, has anyone else found a workaround? Thanks, Anthony.

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identification of objects
by Jiri Stepan 15 Jul '99

15 Jul '99

hello I'm developing an Zope product and I want to call methods of other published objects from the python's code. I don't know how to identify other objects which are in anothers folders. example: i have an objects visible from URL http://localhost/Tests/test_1 This objects has method index_html. In this method I want to call method of objects http://localhost/documents/document_1/get_text How to do it ? Thank for any information Jiri Stepan -- = = = = = = = = = = = = www.etnetera.cz = = = = = = = = = = = = j i r i s t e p a n jiri.stepan(a)etnetera.cz et netera internet studio plzenska 221,150 00 praha 5, czech republic tel:+420-2-57212871 fax: +420-2-57212340 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - www.annonce.cz - www.siemens.cz - www.bohemiahop.cz - a dalsi = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

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Scripting rather than using the management GUI ...
by Darran Edmundson 15 Jul '99

15 Jul '99

Can I bypass the management GUI and just use python scripts to make changes to my Zope Object Database? For example, I'd like to traverse my entire database correctly setting the height and width properties of all images. I'll give myself RSI doing this via the GUI. The other option that I can see is to write an external method, put this in the root folder, and call it through the management interface. The last step seems gratuitous and I'm left feeling that there must be a simpler solution. Cheers, Darran. -- Darran Edmundson dEdmundson(a)bigfoot.com

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RE: [Zope] Scripting rather than using the management GUI ...
by Michel Pelletier 15 Jul '99

15 Jul '99

> -----Original Message----- > From: Darran Edmundson [mailto:Darran.Edmundson@bigfoot.com] > Sent: Thursday, July 15, 1999 4:49 AM > To: zope(a)zope.org > Subject: [Zope] Scripting rather than using the management GUI ... > > > > Can I bypass the management GUI and just use python > scripts to make changes to my Zope Object Database? > For example, I'd like to traverse my entire database > correctly setting the height and width properties of > all images. I'll give myself RSI doing this via the > GUI. The other option that I can see is to write > an external method, put this in the root folder, and > call it through the management interface. The last > step seems gratuitous and I'm left feeling that there > must be a simpler solution. > Calling it seems gratuitous? If you wrote a script that changed your filesystem, at some point you'd have to call it to do the actual changing. Think of calling an ext method from the management screen 'running' a script. Zope is entirely event based, a request has to happen for any code to run. -Michel > Cheers, > Darran. > > -- > Darran Edmundson > dEdmundson(a)bigfoot.com > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://www.zope.org/mailman/listinfo/zope > > (For developer-specific issues, use the companion list, > zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev ) >

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Re: [Zope] A better version of the Image object?
by Christopher Petrilli 15 Jul '99

15 Jul '99

> > How are Zopers dealing with providing images at > various resolutions? I started off creating a > separate folder for each image, the folder containing > It would be much nicer if the image object could > render itself at various resolutions. That is, > you upload 1 high-res version and can obtain lower > res versions when calling the render method. > Being new to Zope, is it possible to sub-class the > base objects and have them generally available? This would be doable, however when I was thinking about this in a slightly different context, I was worried about the Python GIL, so you would probably want to push this into a C extension so you could release the lock completely and do your work, then grab it, return it. This would allow the server to run smoothly. Otherwise, if it takes any time, you're going to see jerkiness in your server. Chris -- | Christopher Petrilli Python Powered Digital Creations, Inc. | petrilli(a)digicool.com http://www.digicool.com

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RE: [Zope] Zope and Frontier Comparison
by Paul Everitt 15 Jul '99

15 Jul '99

Michael wrote: > Anyway, I for one am glad to have you and the other Frontier > people here on this > list, and I'm sure that the cross-pollination of ideas will > benefit both > communities, even as our platforms compete in certain areas. Couldn't have said it better myself! I'm awfully excited about getting the persective of more Frontier people. Zope could use some of the usability that is so ingrained in Frontier. I _will_ note, however... :^) Yesterday we were giving our workflow spiel to a group of distinguished guests and the topic of acquisition came up. Rob Page here was discussing how acquisition allowed us to create general SQL queries high up in the folder hierarchy that were narrowed by properties lower in the folder hierarchy. Thus, the SQL query to find out what was in your workflow "Inbox" occurred all the way up in the application level. But various properties constrained the query as you traversed into departments and into actors within departments. The managers of each department folder and each actors subfolder within the department didn't have access to see inside the SQL query -- it was defined "up" above their management reach. The SQL query used the first folder property it could find as it rolled "up" the folder system. There was a special case of a headquarters "superdepartment" that was allowed to look at all departments. They got their own SQL query and thus didn't acquire the higher up SQL query. Thus, the idea of acquisition extends to cover not just subtemplates but also properties, security settings, relational database integration, external methods -- anything that is an object in Zope. And most importantly, the security rules are obeyed. In Frontier, if you "acquire" a subtemplate that you are not allowed to access, does it prevent you from accessing it? --Paul

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