September 1999 - Zope-Dev

A DTML code
by Junior 15 Sep '99

15 Sep '99

I folks, I need a DTML code with return the width and height of a picture. ThankYou Liart WebSoluções

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Catalog Aware
by Jason Spisak 15 Sep '99

15 Sep '99

Michel, The message I just sent to Kevin has a traceback in it telling me that ZCatalog aware does not support manage_renameObject. How do I work with an object that has to subclass DTMLDocument and be Catalog aware? -- Jason Spisak webmaster(a)hiretechs.com

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deep or shallow copy, or what are dtml documents good for?
by Joerg Wittenberger 15 Sep '99

15 Sep '99

Hello folks, I found that zope uses deep copy with copy&paste and I found this a bit annoying especially it plays IMHO bad together with versioning and multiple authors. Here a short szenario: two persons modify documents within one folder. As soon as one mades changes to any document (within a version), the whole folder is locked (outside of that version). This is ok in so far as links within that document address all other documents within the same folder by relativ names and hence could break if somebody modifies any other document. In other words siblings belong somehow into the namespace associated with a document or put differently again: the containing folder is somehow a property of the documents contained within. The solution to would be to copy a folder before changing it. Rather wasteful and calling for the questing how to merge the branches. Another solution was to regard the folder as the basic unit of documents. Now everything works as expected and required. The slightest modification locks the document. Every document or method contained within describes just a part. The only thing missing was a chance to explicitly lock something, but that's easy to work around with a fake change. The only problems with the latter approach are a) it's regarded as strange, because people tend to thing of files aka documents as the basic unit b) selecting something to modify requires to first select the folder itself and next the index_html document; often the children property is never needed or becomes a requirement after some time passed (It's hard to teach why people should click twice if they could solve the problem for the short run by one click just to prevent chaos later.) c) the confusion about the difference between douments and methods becomes complete, because documents are no longer needed. All they have in contrast to methods are attributes (meta data), which should be associate with the folder now. My proposal: Folders and Documents should be merged. A dtml document should have a folderish property (say children), which contains links to those documents, which should be addressed relativ. When a new version is created, or the document is copied&pasted, those links are copied as well. But this time as a shallow, not a deep copy. The content of a document is just a method, which renders it's properties. After changing the content of a document the link within the containing document point to the new version. Links within the document still share content with the original. This raises the question, which document is the containing document. The answer is dynamic. In coherence with th way zope works it's always the one, which it is accessed thru. Additional notes: I'm fully aware that this breaks with the traditional semantics of files, but it goes in one line with the way xml structures documents. See the side note about zope's limitations in the XML2Zope package. If a document had such a folderish children property a xml document would map to a description of a sequence of properties drawn from that children property. A dtml architectural dtd (formerly called meta dtd) could map some of those elements to dtml tags. If done properly the proposed way would unify two concepts of zope, folders and documents. Which in turn should be made available again as specializations of that general type. I'm not certain that this proposal would break any other semantics I'm not aware of. I'd like to discuss that topic a bit more detailed brefore making plans to code it up. Thanks in advance for expressing your oppinions and objectives. /Jerry PS: due to mail problems please cc me to your replies. -- You can have it done fast, you can have it done cheap, and you can have it done well. --- But you can only have two of those at once.

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Using DTMLDocument as Base ZClass is a bug.
by Jason Spisak 15 Sep '99

15 Sep '99

I can create instances of a ZClass base on DTMLDocument fom python and they are fine. But when using the management interface, their 'id' gets entered as '<string>'. Also when trying to use:  Zope tells me that 'old_name' doesn't suport this kind of operation. I have already submitted this to the Collector last week, and it is really rendering the application we have created pretty useless because we cannot add these objects to the database. I really need someone out there to help out. I can't give them new id's, and thier is'd are wrong so we are stuck. All my best, -- Jason Spisak webmaster(a)hiretechs.com

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Re: [Zope-dev] Using DTMLDocument as Base ZClass is a bug.
by Jason Spisak 15 Sep '99

15 Sep '99

Thanks Kevin, That didn't do it either. I really shouldn't have to be changing the name at all just to get the 'id' property to stick. Can you, or anybody recreate this? Just make any new ZClass based on DTMLDocument or Method, and add apropertysheet of your own with an extra property. Then try to create an instance of it and get it's id through var, or the tree tag. The traceback on the operation not permitted is this: The item <EM>Resume</EM> does not support this operation.  > >I can create instances of a ZClass base on DTMLDocument fom python and > >they are fine. But when using the management interface, their 'id' gets > >entered as '<string>'. Also when trying to use: > > > > > > > >Zope tells me that 'old_name' doesn't suport this kind of operation. > > I don't know if it will help, but have you tried: > <dtml-call "manage_renameObject('old_name', 'new_name', REQUEST)"> > ?? > > REQUEST is sometimes needed for checking permissions... > > Kevin > > All my best, Jason Spisak

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Re: [Zope-dev] wygiwys
by Christopher Petrilli 15 Sep '99

15 Sep '99

> one of our clients makes me nervous, twice a day: he allways asks if there > is a wygiwys-possibility for the content-managers of tehir site? What You Get Is What You See? :-) > is there something like that or should i wait until the release of zope 3? What exactly are you asking for? I don't think we'll ever provide a "Dreamweaver" or "GoLive" style interface, that's an entire huge market to tackle. Patches accepted :-) Chris -- | Christopher Petrilli Python Powered Digital Creations, Inc. | petrilli(a)digicool.com http://www.digicool.com

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Fw: [Zope-dev] wygiwys
by morton＠dennisinter.com 15 Sep '99

15 Sep '99

----- Original Message ----- From: damien morton <morton(a)dennisinter.com> To: Christopher Petrilli <petrilli(a)digicool.com> Sent: Tuesday, September 14, 1999 4:29 PM Subject: Re: [Zope-dev] wygiwys To be a competetive solution, Zope needs to integrate with the wysiwig systems most designers use. Asking them to cut and past html simply isnt an option. You just wont see the kind of amazing graphic design that is possible on a website, unless these artist can conveniently use their tools with whatever dynamic publishing system is in use. One of my complaints with DTML is that it currently cant integrate with dreamweaver or other design tools. Cold Fusion can and does integrate because of their use of custom tags using the same syntax as HTML, rather than the escaped tags used by DTML (and indeed ASP). I have to say that Im just starting out with Zope. Im learning it and keeping an eye out for a project its appropriate for - an opportunity to indroduce it to my company. Ive attached the DreamWeaver extensions manual. Maybe youll have a look at and we can exchange ideas. I dont think it would be too hard to introduce a handfull of Zope specific extensions for Dreamweaver - ones that would cover 99% of what zope requires. I think youll find that the dreamweaver extensions mechanism might possibly cover all that Zope requires, including access to the management interface. A DLL might need to be created which implements a javascript to python interface, but thats about it. Anyway, have to run. let me know what you think. Dreamweaver extensions document can be found at http://209.73.0.109/DreamWeaver/extending.pdf ----- Original Message ----- From: Christopher Petrilli <petrilli(a)digicool.com> To: Damian Morton <morton(a)dennisinter.com> Sent: Tuesday, September 14, 1999 3:27 PM Subject: Re: [Zope-dev] wygiwys > > What about providing for integration with DreamWeaver. Dreamweaver has a > > complete extention mechanism which might be tweaked to provide Zope > compatability. > > > > Another alternative would be to create something that mimics a filesystem, > > which would be Dreamweaver or GoLive accessible. > > The problem is much much larger... how do you teach a system that assumes it > has total control over presentation that in-fact some things might be > iterated over? I often dynamically regenerate tables and layout information > with DTML, how would Dreamweaver figure this out? We use GoLive internally > for mock-ups, but we can't really use them for complex dynamic projects, > they simply don't have that kind of expressive capability. > > We'd be more than happy to see someone else provide this for Zope, or if > someone was willing to fund it, but, barring that, it's unlikely to ever go > anywhere. > > Chris > > -- > | Christopher Petrilli Python Powered Digital Creations, Inc. > | petrilli(a)digicool.com http://www.digicool.com >

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Re: [Zope-dev] Fw: [Zope-dev] wygiwys
by Kevin Dangoor 15 Sep '99

15 Sep '99

-----Original Message----- From: Damian Morton <morton(a)dennisinter.com> To: zope-dev(a)zope.org <zope-dev(a)zope.org> Date: Tuesday, September 14, 1999 9:27 PM Subject: [Zope-dev] Fw: [Zope-dev] wygiwys >To be a competetive solution, Zope needs to integrate with the wysiwig systems most designers use. Asking them to cut and past html simply isnt an option. Hopefully, WebDAV will catch on quickly (Dreamweaver 3 maybe?). This will surely eliminate cut and paste. >One of my complaints with DTML is that it currently cant integrate with dreamweaver or other design tools. Cold Fusion can and does integrate because of their use of custom tags using the same syntax as HTML, rather than the escaped tags used by DTML (and indeed ASP). Actually, Zope 2 has a new, preferred syntax which is not escaped-looking... <dtml-if> blah blah blah </dtml-if> etc... Kevin

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wygiwys
by Andy Pahne 14 Sep '99

14 Sep '99

one of our clients makes me nervous, twice a day: he allways asks if there is a wygiwys-possibility for the content-managers of tehir site? is there something like that or should i wait until the release of zope 3? Andy Pahne ap(a)net22.net

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strange bug with mail&redirection
by Joerg Wittenberger 14 Sep '99

14 Sep '99

Hello folks, I've got a code snippet, which seems to reveal at least one bug: I have a dtml method, which receives a form input and either a) tries to transfers control to another method, if it's there or b) changes some properties and redirects to another form: <dtml-try> <dtml-var "_['t' + `status` + 'to' + `REQUEST.form['status']`]"> <dtml-except> <dtml-call "propertysheets.manage_changeProperties(REQUEST)"> <dtml-call "RESPONSE.redirect(URL1 + '/edit')"> </dtml-try> now I have another dtml method "t5to6", which sends some mail and shares the rest of the operation:  To: jerry@localhost From: Transition Subject: STATUS: <dtml-var title> <dtml-var number> 5 -> 6 Statusübergang  <dtml-call "propertysheets.manage_changeProperties(REQUEST)"> <dtml-call "RESPONSE.redirect(URL1 + '/edit')"> Problem I (less hard): Sometimes all I do is edit the "t5to6", after that I get the message "AttributeError" __call__. I can solve that by deleting and recreating the dtml method. Problem II (real part): The method sends mail at most one time, but most of the time I see an error "Invalid Header 0:" from DTMLMethod.py line 398. I don't get that error when I either don't redirect or don't send mail. (Using mailhost instead of smtphost won't help.) /Jerry -- You can have it done fast, you can have it done cheap, and you can have it done well. --- But you can only have two of those at once.

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