October 1999 - Zope - Zope lists

ZCatalog questions
by Itamar 19 Oct '99

19 Oct '99

1. What's the difference between the Metadata tab and the Indexing tab? 2. I understood from the draft CatalogAwareness how-to that editing a propertysheet with the built-in interface doesn't update the catalog - you have to do it manually. Is it possible to check if an object inherits from CatalogAware? Because if so, I'd change Zope to update the catalog automatically if the changed object was CatalogAware. TIA. Itamar S.-T., itamars(a)ibm.net

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New version of ODP code released
by Andrew M. Kuchling 19 Oct '99

19 Oct '99

I've made a new version, v0.02 of the Open Directory Project code available. http://starship.python.net/crew/amk/zope/ODP.html It no longer uses XMLDocument to parse XML; instead, you'll have to install the XML-SIG's tools. Rather than procrastinate further, I'm making this incomplete release so people can poke at it. Note that the code fully deserves its low version number of 0.02; most notably, I haven't made my test dataset comprehensive enough to exercise every feature, so there are still bits of code that haven't been exercised. Please don't hesitate to ask installation questions; I'm working on a new set of Web pages, but haven't finished them yet. -- A.M. Kuchling http://starship.python.net/crew/amk/ The chaos of our lives suited me; I don't think I wanted it to end. -- Tom Baker, in his autobiography

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Which docs am I missing?
by Stefan Hoffmeister 19 Oct '99

19 Oct '99

It seems as if I am missing quite a bit of documentation. I have DTML, ZAG, ZCMG, ZDG (just the archive names) and tried to read about everything that is relevant to "plain" DTML (seems to be limited to DTML, ZCMG). But then I run into "Zope Quick Reference" which is quite massive and all very fine - the problem just is: where is the more elaborate counter-part to this *quick* reference, with all the explanations? Essentially I am looking for documentation on "techniques" - ways of how to do things. Now, there are quite a few of HOWTOs. But unfortunately most of these HOWTOs appear to demonstrate higher-level concepts. Take, for instance, <dtml-with Images> <dtml-in "objectValues(['Image'])"> <dtml-var sequence-item> </dtml-in> </dtml-with> which I found in the archives for this mailing list. Given the current "official" documentation, how could I have found out an explanation of what <dtml-in "objectValues(['Image'])"> does (ignoring the problem of how to find objectValues)? The only place I have found "objectValues" mentioned is "For example, to display all sub-objects of a folder, the objectValues method may be used (figure 13)." Sure, so what? What's this "Image" thing? Apparently it is an index into a Python list which returns a list of all images in the current folder? Name space? What else is there? Well, the "Entire Zope FAQ" (FAQ!) says "You can however, specify a list of object metatypes that it should return. objectValues(['DTML Document']) will only return all DTML Document objects in a Folder. Other metatypes you could select on are: Folder, DTML Method, File, Image, Mail Host, User Folder and Session." Do you see my problem? When I *have* something, I can *backtrack* this to at least some bits and pieces of information - although the only way to find it is a grep, which is as brute-force as it can be. But where is the documentation that "looks forward", that helps me to find out how to write "original" code? Reverse-engineering may be fun, but it's a bit time-consuming for my taste? Thanks for any pointers!

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RE: [Zope] Selection Box
by Ian Blenke 19 Oct '99

19 Oct '99

On Tue, Oct 19, 1999, John Glossner wrote: > I have searched most reference material with no avail to try > to find out how to set up a simple selection box. > > I have a ZClass called LinkClassification to which I have attached > a property link_class which is assigned to value link_class_data. > > My question is where do I create the variable link_class_data? > I think it should be as another property in the same directory. > When I do this the zope management screen hangs. link_class_data must be in the appropriate namespace to be visible to the propertysheet. 1. Define it as a "lines" Property 2. Define it as a method that returns an array of items, ie: <dtml-return "('Option 1','Option 2')"> 3. Define it as a TinyTable, with one column name: "sequence-item" If you add these lists to the Product containing your ZClass, then the propertysheet for an instanciated object of the ZClass will give you errors when it shows up. So you copy the lists inside of your ZClass definition. The downside is apparent: every object now has a copy of all of your lists. Big bummer when it comes to long lists of items or a large number of objects. But, the real problem comes when you try to create an instance of your ZClass outside of the management UI. This is a battle that I'm still loosing (even using KMnetNews as an example). :( > I presume this is because I did not define the link_class_data > property correctly. What are the valid types allowed for > a selection box - strings,text,etc.? It must be a list. - more importantly: it must be a list that implements sequence-item when iterated through (if you use a TinyTable without naming your column as "sequence-item", you get odd results :) It must be in a variable (it can't be an expression). - this breaks using objectValues() or something similar It must be relative (you cannot fully qualify it "with.a.path"). - this breaks "globalizing" lists into a Product namespace > Does someone have the syntax for how the selection box is > assigned a variable? Or is there an example somewhere I > can reference? This is the real pain. In order to draw a selection box that has a specific variable selected, you need to have a massive hunk 'o code in a loop to compare every option to the selected value. If a value is selected, then you put the "SELECTED" keyword in the OPTION tag. ARGH. There has to be an easier way. I'm beginning to think that a "Utils" folder with common "tag renderers" would be alot easier than the mess I've been stumbling through for the past 3 days. DTML is difficult. Coding ZClasses purely in DTML is a nasty experience if you want to do anything useful with the resulting objects outside of the management interface. - Ian "DTML-has-made-me-a-bitter-man" Blenke <ian(a)blenke.com>

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Re: [Zope] Some questions for experienced zopers
by Thomas B. Passin 19 Oct '99

19 Oct '99

kayak <van_lindberg(a)byu.edu> wrote > I've got two pressing questions that I can't seem to find answers > to on zope.org: > > 1. What is the relationship that dtml has (if any) to > javascript? Specifically, > I want to do onmouseover swapping of a .gif. It seems to me that > it would be simple with dtml, something like > <dtml-if img1 mouseover == true> > <dtml-var img2> > <dtml-else> > <dtml-var img1> > </dtml-if> > > but I can't find a reference to any such functions. Otherwise, > what is the best way to integrate js and dtml? A browser normally does mouseovers completely in the browser. That is, the server has no way to know that a mouseover occurred. This is what you normally want, because the only way to interact with the server is to request another page. You don't want to ask for a new page just for a mouseover event. There are a few standard ways to handle the mouseover change ov images using javascript on the browser - many javascript books and articles show how to do it (usually by caching the other image in a javascript variable). So DTML wouldn't be involved at all. Tom Passin

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RE: [Zope] comparing Zope with Vignette, IPS and others
by Martijn Pieters 19 Oct '99

19 Oct '99

At 17:59 15/10/99 , Michel Pelletier wrote: > > -----Original Message----- > > From: Martijn Pieters [mailto:mj@antraciet.nl] > > Sent: Friday, October 15, 1999 11:20 AM > > To: zope(a)zope.org > > Subject: Re: [Zope] comparing Zope with Vignette, IPS and others > > > > They have a nice list of customers, especially in the only newpaper > > department. Any comments from DC on this product? > > > http://www.futuretense.com/ > > >I've personally never heard of it, perhaps Paul has? I understand that Paul is enjoying a vacation. In the meantime, Futuretense has been acquired by Open Market, and IPS has been integrated into their product line. From the new pages their high hardware demands become clear: it is build on Netscape Application Server. Costly. Other information on the product has been dramatically reduced.. -- Martijn Pieters, Web Developer | Antraciet http://www.antraciet.nl | Tel: +31-35-7502100 Fax: +31-35-7502111 | mailto:mj@antraciet.nl http://www.antraciet.nl/~mj | PGP: http://wwwkeys.nl.pgp.net:11371/pks/lookup?op=get&search=0xA8A32149 ------------------------------------------

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Some questions for experienced zopers
by Liz 19 Oct '99

19 Oct '99

Try this: <IMG SRC = images/img1> Liz Pelletier *********************************************************** 2. I would like to aggregate my images into a common folder off the zope root, something like this: (indenting to show directory structure) / Mysite [_] control_panel [_] acl_users [_] images * img1 * img2 * img3 % index_html % standard_error_message % standard_html_header % standard_html_footer and then call them as <dtml-var images/img1> in index_html. Even though the documentation suggests that this is possible, doing so always returns an error for me.

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List All users with a given permission
by Stuart 'Zen' Bishop 19 Oct '99

19 Oct '99

I suddenly find myself with a need to populate a list box with all users with a given permission on a particular object. Is there any nifty method hidden away to do this? Or would I be reduced to crawling up the tree looking for userfolders and iterating over the contents (could be a bit sluggish with 3000+ users...) Perhaps I'll just require tying the username and verifying on form submission :-) ___ // Zen (alias Stuart Bishop) Work: zen(a)cs.rmit.edu.au // E N Senior Systems Alchemist Play: zen(a)shangri-la.dropbear.id.au //__ Computer Science, RMIT WWW: http://www.cs.rmit.edu.au/~zen

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UserDB and UserFolders together ?
by Geir B Hansen 19 Oct '99

19 Oct '99

I really like the login-routine on zope.org and i am thinking of implementing UserDB in my site to accomplish something similar. I got a little worried though, from all the mails about deleting user-folders and people getting locked out of their sites... What i am wondering is this: Can i use userdb along with user folders side by side ? ------------------------------------------------ Geir B Hansen geirh(a)funcom.com Web-designer / Graphic artist Funcom Oslo ------------------------------------------------

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RE: [Zope] NT User Folder - No Domain support?
by Toby Dickenson 19 Oct '99

19 Oct '99

You can fix this by making some changes to the NTUserFolder source: 1. Change the first parameter from None to the name of a DC, in the calls to NetUserEnum and NetUserGetInfo 2. Change the second parameter from "." to the name of a DC, in the call to LogonUser That looks like it should work, but it is untested. A question for anyone else using NTUserFolder.... Would it be appropriate to change the default to authenticate in the domain?

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