February 2000 - Zope

Object ID and Property confusion
by David Salgado 17 Feb '00

17 Feb '00

Hi All I'm sure this is a dumb question, but I haven't been able to figure it out yet... If I have a bunch of objects of type 'myObj' in a folder, then I can do something like; <dtml-in "objectIds('myObj')> <dtml-var sequence-item><br> </dtml-in> ...to display a list of all the ids of my 'myObj' objects in the folder - so far, so good. Now, each of the 'myObj' instances has a property 'myProp', which I'm interested in. So I can do this; <dtml-in "objectValues('myObj')"> <dtml-var myProp><br> </dtml-in> ...to display a list of all the 'myProp' values of the 'myObj' objects. What I want to do is display a table where column one contains the id of the object, and column two contains the 'myProp' value. From a brief look at the source of "lib/python/OFS/ObjectManager.py" it looks as if the 'objectItems()' method might do something like what I want, but I haven't been able to get it to do what I want. Any ideas would be gratefully received! TIA David

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STX_Document
by Darcy Clark 17 Feb '00

17 Feb '00

I am having some trouble with using STX_Document with objects named index_html. I've worked out that index_html method is used by the ZClass when the STX_Document is viewed. For instance if I create a folder "test" and then add an STX_Document to the folder called "index_html", then point the browser to http://server/test/ I get : Zope Error Zope has encountered an error while publishing this resource. Resource not found Is there a way around this problem... thanks in advance, darcy -- --------------------------------------------------- Ph: (734) 764 3377 Email: darcyc(a)engin.umich.edu URL: http://www-personal.engin.umich.edu/~darcyc/ --------------------------------------------------- 'If you're not part of the solution, you're part of the precipitate' ..... Steven Wright

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Zope Weekly News
by Mike Pelletier 16 Feb '00

16 Feb '00

G'day, Zope Weekly News is a digest of some of the useful and interesting events which have occurred on the various Zope mailing lists and the Zope.org site. It is published each Wednesday evening. Any opinions contained in the Zope Weekly News are those of the chronicler exclusively. Announcements * Lalo Martins has begun writing a Zope tutorial in Brazilian Portuguese. His announcement stated he was halfway through, and that it was already useful. http://zope.gf.com.br/ZopeIntro New Products * Software Product: "Local Factory Objects", submitted by "lalo" This package appears to allow you to create Factory objects (objects which manage the creation of ZClass instances) in places other than a Software Product. This is useful to prevent the 'Add' list from becoming unwieldy by placing the Factories in the relevant portions of the site, rather than making them globally available. http://www.zope.org/Members/lalo/LocalFactory/LocalFactory-0.1.tar.gz * Software Product: "Persistent List and Dictionary", submitted by "AndrewWilcox" Like the PersistentMapping object, PersistentList and PersistentDict are classes that look like the basic Python types of the same names, but which are persistent and which alert the ZODB when their contents have changed. PersistentDict differs from PersistentMapping in two respects-- It is not limited to strings as keys, and it does not hide keys that begin with an underscore. http://www.zope.org/Members/AndrewWilcox/PersistentListDict * Software Product: "ZDP Tools 0.1", submitted by "roeder" This is a distribution of the very tools that make the Zope Documentation Project work. Follow the second link below to see the ZDP in action for an idea of what is possible with this toolkit. http://www.zope.org/Members/roeder http://zdp.zope.org:8080/ZDP * Software Product: "StructuredText Document", submitted by "tseaver" This is a very simple, ZClass based Product which provides a means of displaying structured text documents without creating a second DTML Method to wrap the structured text. This is often very handy. Note that ZClasses cannot be used as a Folder's index_html. http://www.zope.org/Members/tseaver/STX_Document Updates * Software Product: "load_site.py with additional features", submitted by "itmar" This is a modification of the load_site utility that comes with Zope. This utility sucks files and directories out of a local filesystem and creates corresponding Zope objects with their contents. Itmar has made some useful changes: the DTML it generates is now in the new Zope 2 syntax; certain HTML metadata and display options may be placed in object properties; javascript can be stripped out of headers (for making Dreamweaver output more lightweight); can clean up output of certain Microsoft products so that quotes display properly on other platforms. http://www.zope.org/Members/itmar/load_site * Software Product: "ZWiki 0.4", submitted by "simon" ZWiki is a product which allows the creation of wiki webs in Zope. What is a wiki web? Well, I'm not sure, but Peter Merel says that the typical wiki web is "insecure, indescriminate, user-hostile, slow, and full of difficult, nit-picking people." And these are the GOOD points! Seriously, a Wiki Web appears to be a dynamic web site which is built, torn down and rebuilt by anonymous users. 0.4 adds a number of tweaks, tunings, and new default content. See the link for details. "simon"'s news item does not include a link to the Product, so it's included below as a second link. http://www.zope.org/Members/simon/ZWiki/ZWiki_0.4_released http://www.zope.org/Members/simon/ZWiki Zope.org items * How-To: "Build a WAP site with Zope", submitted by "Duncan" This HowTo describes what you would need to do to allow Zope to serve WML pages to cell phones, PDAs, and other wireless devices via WAP. It addresses issues such as setting the content type correctly, caching, serving bitmaps, and making the standard Zope html-include files both WML and HTML-friendly. http://www.zope.org/Members/Duncan/wap_howto * "Zope Docs", submitted by "AlexR" This is a pretty handy resource. "AlexR" has compiled all the HowTo documents on Zope.org and made them available as a printer-friendly Adobe PDF file. In addition, this page has links to a pair of printer-friendly lists of all the HowTo documents on Zope.org, one sorted by name, and one by date. http://www.zope.org/Members/AlexR/ZopeDocs * How-To: "add users in python", submitted by "element" In addition to describing the process for adding users to a Zope server from a Python Product, this brief How-To also describes adding the actual User Folder ('acl_users'), adding a local role, and assigning a role to a user. http://www.zope.org/Members/element/addingUsersInPython * How-to: "Generate URLs for Objects", submitted by "jim" This is a very thorough How-To on a common, but simple (once you know the trick) problem. Astonishingly, Jim manages to stretch a one-line answer into a two-page document. I don't want to spoil the surprise ending, but it is possible to ask an object for it's canonical URL, and this How-To explains how. http://www.zope.org/Members/jim/ObjectURLs -- Mike Pelletier. mike(a)digicool.com

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sendmail tag/DTML problem
by Jochen Haeberle 16 Feb '00

16 Feb '00

Hi, I have a property to a ZClass that defines the mailhost to be used for the instance. The property is called use_mailhost. Now I am working on a method that is to make use of this property, but I can't get it to work: <dtml-sendmail mailhost="_[use_mailhost]"> <dtml-sendmail mailhost="_.[use_mailhost]"> <dtml-sendmail mailhost="<dtml-var use_mailhost>"> <dtml-sendmail mailhost="<&dtml-use_mailhost;>"> all don't work. Now I am out of tries :-( I were favoring the first one why don't they all work??? where's the error? Jochen

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Problem with Classes in Classes [Newbie]
by Andrew Diller 16 Feb '00

16 Feb '00

Hello: I'm trying to create classes in classes as per the Zope Developers Guide- page 11 "Classes inside Classes." - I've created a product, and create a Zclass in it (subclass of Object Manager) - then in the method of that ZClass, I create some more Zclassses - In those ZClasses I set up some Properties and Views - There is a "Contents" View in my parent ZClass, with a manage_main in it. - I add views to the First Zclass of the child classes --- Then I go and create a new folder at the top level. In that folder I create an instance of my Zclass In that instance, when I attempt to add on of the subclasses, I get a Zope error: Zope Error Zope has encountered an error while publishing this resource. Resource not found Sorry, the requested Zope resource does not exist. Check the URL and try again. Traceback (innermost last): File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 179, in publish File /usr/local/zope/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: RoleManager) File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 151, in publish File /usr/local/zope/lib/python/ZPublisher/BaseRequest.py, line 426, in traverse File /usr/local/zope/lib/python/AccessControl/User.py, line 375, in validate (Object: RoleManager) File /usr/local/zope/lib/python/ZPublisher/HTTPResponse.py, line 511, in notFoundError NotFound: (see above) ------ If, in my instance, I click on a View of the child classes I also get an error: Zope Error Zope has encountered an error while publishing this resource. Error Type: KeyError Error Value: id Traceback (innermost last): File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 179, in publish File /usr/local/zope/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: nisc4) File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 165, in publish File /usr/local/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: diskClass_add) File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: diskClass_add) File /usr/local/zope/lib/python/OFS/DTMLMethod.py, line 145, in __call__ (Object: diskClass_add) File /usr/local/zope/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: diskClass_add) File /usr/local/zope/lib/python/DocumentTemplate/DT_With.py, line 133, in render (Object: diskClass.createInObjectManager(REQUEST['id'], REQUEST)) File /usr/local/zope/lib/python/DocumentTemplate/DT_Util.py, line 335, in eval (Object: diskClass.createInObjectManager(REQUEST['id'], REQUEST)) (Info: diskClass) File <string>, line 0, in ? File /usr/local/zope/lib/python/DocumentTemplate/DT_Util.py, line 161, in careful_getitem File /usr/local/zope/lib/python/ZPublisher/HTTPRequest.py, line 760, in __getitem__ KeyError: (see above) ---- Why the id error for this? thanks for any input, andy - - - - - - - - - - - - - - - - - - - Andrew Diller dillera(a)isc.upenn.edu Information Systems and Computing Unix Systems Group University of Pennsylvania v: 3-7360 f: 8-9348

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Editing via XML-RPC?
by Robert W. Erb 16 Feb '00

16 Feb '00

I use emacs. I want to use emacs for much of the Zope work I do. My Zope installation doesn't allow for direct ftp access through/to ZServer. (I can't change the way it's set up, either.) Since I can't ftp into ZServer, I can't use the emacs/ftp solution. Is editing in emacs and publishing to my Zope via XML-RPC feasible? It sounds simple; when a file is saved, wrap the file in an XML-RPC request, then send it to Zope. Am I missing something? - Bob

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Who was Zope?
by Jerry.Spicklemire＠IFLYATA.COM 16 Feb '00

16 Feb '00

Ancient Geek Mythology?

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Checking if an image exists/simple question
by H.G.J. van der Linde 16 Feb '00

16 Feb '00

Hi, We have a sql database with employee information. Every employee record has an MWID field. Photo's of the employees are stored in a Zope folder (mwfoto) where the id of every photo has MWID as its name. So we can display the photo like this: <img src="/psychologie/mwfoto/<dtml-var mwid>" This works fine. Now I want to check if a photo exists, and if not, display some other info. In some sort of Zope pseudocode: <dtml if exist(mwid)> showphoto <dtml else> showanotherveryinterestingpicture </dtml-if> How do I do this? Your help is very much appreciated, Henny van der Linde Leiden University linde(a)fsw.leidenuniv.nl

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Another Site Management Question
by James W. Howe 16 Feb '00

16 Feb '00

I'm building a site which is going to have content maintained by non-Zope knowledgeable users. These users are going to be able to add/delete content but not much more. I know that I can create a role for these users and that I can turn off authorization to various activities. However, it seems that even if I do this, the user can see objects for which they have no access. For example, I have a root folder into which I want the user to be able to add a specific type of Folderish ZClass I've created. The root folder also has DTML methods which I have created. I don't want my user to edit these methods, and ideally I don't even want the user to see the methods. What I want to do is provide as uncluttered a look as possible to my user. They should only be able to see the things they can modify. Is this easy to do with Zope, or would I have to invent my own management interface to handle this? Thanks. James Howe internet: mailto:jwh@allencreek.com Allen Creek Software, Inc. pgpkey: http://ic.net/~jwh/pgpkey.html Ann Arbor, MI 48103

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creating users
by Alex Burton 16 Feb '00

16 Feb '00

Hello List, I'm new to Zope and am investigating how to create a system where users (visiting users, not in-house users) could create an account and manage their preferences? I've looked through the Guides and HowTos but saw nothing to that effect. The closest thing i found was the chameleon folder, but this is just a single preference stored in a cookie. I really need the users to "create" a profile and "log in" through a web interface (a la excite, for instance), not the browser/server security login. There must be a Product out there that does that? Alex.

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