December 2002 - Zope

Meta types and properties
by Dragos Chirila 11 Dec '02

11 Dec '02

hi i don't know if this is possible , but here it is : I want to build a list with all meta-types (I mean ALL !!) and for each meta_type i want to be able to get all the properties of an object with that meta_type. Is this possible ??? Any idea is real healpful. 10x a lot dragos

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win32 extensions
by Marco Federighi 10 Dec '02

10 Dec '02

Hi all! Has anyone succeeded in installing the python win32 extensions, and how? My installer refuses to recognise that python is installed, even though I try to install in the Zope directories (/bin, and /bin/lib/win32) where python21.dll sits. Thanks for any insights Marco

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ZProject
by Davis Marques 10 Dec '02

10 Dec '02

Does anyone know where ZProject for Zope can be downloaded? I came across the Wiki for this product, but there's no reference to a site or individual who maintains it. Thanks Davis

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uniqueValuesFor makes an unexpected evaluation.
by Lennart Regebro 10 Dec '02

10 Dec '02

I used the following dtml: <dtml-in "Catalog.uniqeValuesFor('countries')"> This works as expected, that is returning a list of the unique values in the "countries" index. But if I run this from a folder that is a subfolder to a fodler called "countries" then index_html gets called for this folder (which the failes, because the index:_html makes a call to REQUEST and it doens't get one). That makes absolutely no sense, and I can't even see why this would happen. Why does countries gets called when I do "Catalog.uniqeValuesFor('countries')". There are quotation marks around countries, it should be treated like a string. It seems to me that it's called during the interpretation of the DTML, because it seems that uniqueValuesFor isn't being called. Anybody have *any* idea?

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[Bug] TALES in Zope 2.5.x converts "ConflictError" into "TALESError"
by Dieter Maurer 10 Dec '02

10 Dec '02

I know, I cross post... Please adjust the destinations as appropriate when you reply. In Zope 2.5.x, "Products.PageTemplates.TALES.Context.evaluate" converts most exceptions into "TALESError" exceptions. This is probably not a good idea for many exceptions. For "ConflictError" (and its subclass "ReadConflictError") it is definitely a bug. It prevents the usual automatic retry of the request and exposes an exception not understandable to a normal user. I think Shane has cleaned up the exception conversion for Zope 2.6. Therefore, I do not file a bug report to the collector. Dieter

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Re: [Zope] Intel vs AMD
by Dennis Allison 10 Dec '02

10 Dec '02

Dual AMD Athlon 2100 Tyan 760 based motherboard 2GB Memory RH 7.3 + stock distribution of Python 2.1.3 20833 pystones. Note that this is a single processor number.

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Python Question: Morphing Classes?
by Johan Carlsson [EasyPublisher] 10 Dec '02

10 Dec '02

In lack for other Python mailing lists I send my question here (there ought to be someone with a bit of python-zen here ;-) I'm have a bit of a problem because I need to copy one object in the ZODB. Now the copy-and-paste support of Zope will not do it because it actually export/imports the object including all its sub object. So I have abandoned that idea (after an interesting attempt to export only the object (based on their oids), which was bound to fail. Anyway, there isn't any generic way to create an arbitrary product instance. Because if I could do that I could copy all the data into the new object, but I need to be able to handle any addable Zope object and they all got different init-methods requiring arguments. But I have tried another thing: Creating an instance (a) of the class C: pass, I can set the a.__class__=A (where A is another class), a will report that it is a instance of A and it will have all of A's class context. This look like a possible, even if not so less hackerish, way around my problem. Are there any traps I could fall into here? Regards, Johan Carlsson -- Torped Strategi och Kommunikation AB Johan Carlsson johanc(a)easypublisher.com Mail: Birkagatan 9 SE-113 36 Stockholm Sweden Visit: Västmannagatan 67, Stockholm, Sweden Phone +46-(0)8-32 31 23 Fax +46-(0)8-32 31 83 Mobil +46-(0)70-558 25 24 http://www.easypublisher.com http://www.torped.se

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createInObjectManager Confusion
by Edward Pollard 10 Dec '02

10 Dec '02

I'd like to call createInObjectManager from within a Python script. However, it seems to get completely cantankerous when being called from as such Error Type: TypeError Error Value: argument id was ommitted My code is: instance = container.zIndexItem.createInObjectManager('goTest!', context.REQUEST) Since this code works just fine in a script being called by an actual web page, I presume that context.REQUEST is the problem here. I'm not even sure what that means when the requestor is another script - probably nothing at all. All examples I've ever seen of createInObjectManager involve context.REQUEST as the second parameter, what should I be using instead? Thanks, Ed

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Storing many large objects in many folders
by Christoph Schmitz 10 Dec '02

10 Dec '02

Hi, I need to store many large objects (30+MB video files) in a way that Zope can serve them; plus, these files should be distributed over a large folder tree /mytree/... in my Zope system. We've considered the following options: - use LocalFS; the problem is that I'd like to avoid having a LocalFS object in every folder of /mytree/..., and I neither want to put all the files into one filesystem directory; so I'd need some solution that automatically maintains the logical structure of /mytree/... in the filesystem directory. - use BLOBs on a RDBMS; unfortunately, I couldn't get the DBMS connection we are using (DB2 via SQLRelay) to work correctly with BLOBs; I've considered http://www.zope.org/Members/peterb/oracle_lobs, but without success. Are there any viable alternatives apart from these two? What do other people use when they have to maintain large numbers of large objects? Thanks in advance, Christoph -- -- Christoph Schmitz <cschm(a)REMOVEMEgmx.de>

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Re: File from Zope to Filesystem
by Paul Winkler 10 Dec '02

10 Dec '02

You should really direct your questions to the list, not to me. I'm cc'ing the list. On Tue, Dec 10, 2002 at 04:49:49PM +0100, Coanda, Mihai wrote: > Hi, > > I have a form > > <form method="POST" action="processForm_localFS" > enctype="multipart/form-data"> > File or Image: <input type="file" name="filex" value="" /> <br /> > <input type="submit" name="save" value="Upload" /> > </form> > > and this is evaluated by the following DTML Method processForm_localFS : > > <dtml-call "REQUEST.set('new_id', ZopeTime().strftime('%Y%m%d%H%M%S'))"> > <dtml-if filex> > <p>Variable "filex" exists and has the value "<dtml-var > "_.str(REQUEST.filex)">".</p> > </dtml-if> > <dtml-var REQUEST> > <dtml-comment> > <dtml-call "testerx.manage_upload( filex, new_id )"> > > > This returns: > ============ > > Variable "filex" exists and has the value "". Look at the html source, inside the quotes. I bet you'll see <ZPublisher.HTTPRequest.FileUpload instance at e41414> > form > filex <ZPublisher.HTTPRequest.FileUpload instance at e41414> > > > How can I find the name and the path of the filex? Name: filex.filename Path: I don't think you can. But you might have a look at filex.headers, maybe there's something useful in there. I forget. --PW -- Paul Winkler http://www.slinkp.com "Welcome to Muppet Labs, where the future is made - today!"

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