November 1999 - Zope-Dev

HTMLFile() question
by Martijn Faassen 18 Nov '99

18 Nov '99

Hi there, In my Product code I do more or less the following: .. from Globals import HTMLFile form1 = HTMLFile('addForm', globals(), formname='form1') form2 = HTMLFile('addForm', globals(), formname='form2') form3 = HTMLFile('addForm', globals(), formname='form3') .. addForm.dtml contains something like this: .. The name of the form is:<dtml-var formname> .. After this I register several product classes with Zope, product1, product2 and product3 each given their own form (form1, form2 and form3) as their addForm. Now, upon trying to add product1, I'd like it to have 'form1' appear in its addForm. But instead 'form3' appears, the HTMLFile that was created last. This happens for form2 as well. Somehow all the earlier values are forgotten. Why does this happen? What am I doing wrong? Should I use globals() as an argument here? What other arguments could work in its place? If I don't use globals() but None instead, Zope won't find the addForm.dtml file at all, looking for it in 'lib/python' for some reason. I suppose I should dig more into the code, but could anybody enlighten me on what's going on? Regards, Martijn

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more on sessions in general.
by Anthony Baxter 18 Nov '99

18 Nov '99

It seems to me that the Session type object as used in SQLSession is a useful general class of object (regardless of the backend storage). Is it worth making this a more general piece of Zope? Right now, you have to do a <dtml-call Session> at the start of the transaction to get the REQUEST.SESSION object created - it would be nice if this was done automagically (and done in a way that allowed you to slot in a different Session object if you wanted it...) Any thoughts? Anthony

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Re: [Zope-dev] Easy DTML question
by Hannu Krosing 18 Nov '99

18 Nov '99

John Fohrman wrote: > > Thanks for your response. Yes, it works with a fixed string, that is why I'm > trying to do that. try something like   It _may_ be the same thing I encountered when setting cookies (in ver 1.0.3, not sure it is still in 2.x), namely that in some places variables are not evaluated In my case I had a rcursive loop that constructed a path from SQL database, and when setting a cookie with RESPONSE.setCookie('path',make_path) the source code of the method was set in the cookie resulting in broken page ;( using the trick with REQUEST.set solved the problem --------- Hannu

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RE:Javascript help
by Anthony Pfrunder 18 Nov '99

18 Nov '99

Wow! Thanks to all you kind souls. I've got enough information to go from here and will let you know of my progress. I'll release the jsZDOM in a separate product as I think it is a generally useful thing to be able to remotely cause updating of Zope without causing a reload of an expensive (processing wise) page. (Never ceases to amaze me the speed and quality of the work that goes on in the Zope world - back from lunch and I have a written step by step set of instructions ;) Thanks all, Anthony Pfrunder PS: Monitor the Zwiki site for the scratch-pads of other interesting projects. I'm sure DC will move Zwiki onto the main Zope site fairly soon (hint hint) as it is a GREAT way to discuss projects.

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XMLDocument shortcomings
by Melis G�bor 18 Nov '99

18 Nov '99

Having retrieved the current code from the CVS I see no difference from my old version. No matter, it was a useful exercise. I realize there are problems with the current code: - Special characters (&,<,>) are not escaped by the toxml() method - there is no way to specify encoding for toxml or for display purpose in general The first is a trivial issue, but I am not sure how (or where) to solve the second one. It gets pretty annoying if at the management interface one types: <?xml version="1.0" encoding="iso-8859-1"?> <root> öäå </root> but after clicking on the Change button gets: <?xml version="1.0"?> <root> Ã¶Ã€Ã¥ </root> As I understand it, the result is UTF-16. In most cases though, I would like to output it in 'iso-8859-1'. I think that XMLDocument should remember the encoding used to create the DOM and use that encoding to produce xml. Perhaps toXML() can take an encoding parameter and there is a getEncoding() method, too. So one can write: mydoc.toXML(encoding=mydoc.getEncoding()) I can imagine making this the default, as well. What do you guys think? And what is the policy on bringing new library dependencies? I am thinking about using more of xml-sig's stuff. Regards, Gabor

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Interoperability between Zope and Fast.Serv FastCGI solution
by kamon.ayeva＠bureauveritas.com 18 Nov '99

18 Nov '99

Hi, I would like to know if DC or someone from the community has done or is planning to do some work for using Fast.Serv from Fast Engines (www.fastengines.com) as a FastCGI solution for running Zope with Microsoft IIS and/or Netscape servers. A while ago, I got a feedback from Fast Engines people themselves saying they were interested in working with DC for this interoperability. Just to know if it is on a TODO list and to have your feeling on this solution. Regards, Kamon

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A few modifications to the tree tag
by Anthony Baxter 18 Nov '99

18 Nov '99

A few modifications, or proposed modifications, to the tree tag: I wanted to make the tree tag support my SQLSession product, so that it could store the tree state in the session, rather than in a cookie. I've created a patch against the current CVS that adds this - there's a new tree tag option, 'store_session', which when set will use the session to store the tree state. Yay. no more annoying cookie warning dialog boxes. Patch is at http://www.zope.org/Members/anthony/patches/ The second point, would a patch to allow a 'prefix' for the tree-[ecs] options be a useful thing? That way you can have multiple trees on the same page. So if prefix=foobar, the cookies/form values would be of the type 'foobartree-e' &c. Third point: is it worth allowing the tree icons +/- to be overridden? I thought I remembered someone had done this, but I can't remember it for sure, and I can't find it in my zope archives... ta, Anthony

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RE: [Zope-dev] Easy DTML question
by John Fohrman 18 Nov '99

18 Nov '99

I appreciate this response, but it unfortunately it didn't work. Anyone have any other ideas? Thanks, John > -----Original Message----- > From: Jim Penny [mailto:jpenny@universal-fasteners.com] > Sent: Wednesday, November 17, 1999 7:45 PM > To: John Fohrman > Subject: Re: [Zope-dev] Easy DTML question > > > On Wed, Nov 17, 1999 at 07:27:26PM -0500, John Fohrman wrote: > > Hi All -- > > > > Could someone please tell me how to concatenate a string using > DTML in the > > following example? I need to put "smtp:" in front of the email > variable for > > sendmail to work. > > > >  > > try >  > > When to use a double quote and when not always gives me a headache, > I usually try the " version first. > > > > > Thanks! > > > >

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Object oriented schema evolution
by Jay, Dylan 18 Nov '99

18 Nov '99

Just thought I'd throw a bit of research into the mix with regard to what I think is a very important issue with object persistant storage. Something that Zope still has yet to come to terms with. Object shema evolution looks at ways to minimise the problems associated with changing the sturcture/types/classes etc of persistant objects over time. This will become more of an issue when ZODB's become big and start aging. How do I switch to a better model while keeping my old data and keeping it running at the same time? http://davis.wpi.edu/dsrg/OOSE/oose-all-pubs.html

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GenericUserFolder available for beta
by Stuart 'Zen' Bishop 18 Nov '99

18 Nov '99

I've uploaded GenericUserFolder for testing, feedback and general mirth. http://www.zope.org/Members/Zen/GenericUserFolder/ I won't be requesting it to be cataloged until I get some feedback from people playing with it - authentication is fairly complex task, and although I have done testing here, I'd rather get some external feedback before it ends up reducing production sites to smoking rubble. People may also be interested in ZRadius (which is cataloged). This product just handles bare-bones authentication at this stage - all that I need. I'll probably depricate it if any fuller Radius products become available. It has only been tested on my Merit radius servers. Brave souls should look at the source code, in particular the comments in validate() and _recurse_validate(). I'm unsure why the workaround in validate() is working, or even required, but I have a custom information system to have prototyped by Friday afternoon so I'm just happy I have an environment the little darlings will be able to login to :-) -- ___ // 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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