November 1999 - Zope

MySQL and Zope
by Jose de Leon 03 Nov '99

03 Nov '99

I'm new to Zope and got it running fine with Apache. I've experimented with it and read quite a few "How-Tos". I've walked through some of the How-Tos and setup various documents and objects. But...I have yet to find any information on how to get Zope to select and insert data to a MySQL database. I've downloaded and attempted to install MySQLdb from www.zope.org The build worked fine but there are no docs on how to use it or I don't know how to look at the docs if it is embedded in Python code. (I'm new to python too) Is there something more I need to do to get Zope to see a MySQL database? Where is the how-to for this? Thanks, Jose de Leon

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questions on XML and XSL
by Gilles lavaux 03 Nov '99

03 Nov '99

Hello, Is someone successfully using .XSL to format a XML documents? If yes the document probably look nice, but how does it looks during editing?? Is there some demo online where it is possible to edit a XML document, modify/add/delete nodes? (I used the sax python library to do it, but without XSL/CSS the document looks ugly) The only library I found for XSL and python is 'xslpattern', has anybody used it? Thanks for any hint. Gilles lavaux

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RE: [Zope] Z39.50
by Tres Seaver 03 Nov '99

03 Nov '99

Johan Carlsson <johanc(a)torped.se> wrote: > > > Is anyone doing work on a Z39.50 Zope product? > > > > Perhaps one should first ask if anyone even knows wha Z39.50 is. I doubt > > most folks know what it is (but I could be wrong). This would be a very > > niche product, but boy, would it ever be great in that niche. > > What's a Z39.50? A Google search on "Z39.50" turns up the following: http://www.cni.org/pub/NISO/docs/Z39.50-brochure/50.brochure.toc.html -- ========================================================= Tres Seaver tseaver(a)palladion.com 713-523-6582 Palladion Software http://www.palladion.com

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How to make a Python Product Class a BaseClass for ZClasses
by Stephan Richter 03 Nov '99

03 Nov '99

hello everyone, how can I make a python product ZClass like ZPickle and so on a BaseClass for ZClasses. I know I have to write context.registerBaseClass(ZPickle.ZPickle). But that alone will not do it. Can someone help me, please? cheers, stephan -- Stephan Richter iXL - Software Designer and Engineer CBU - Physics, Computer Science and Chemistry Student

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ANN: ZPickle 0.0.1
by Stephan Richter 03 Nov '99

03 Nov '99

Hello everyone, to learn a little bit more abour Python Products I wrote a little one today, which I thought might be useful. ZPickle does exactly what you would think it does. It pickles an object and returns the string or takes a string and converts it to an object. Works exactly like pickle.dumps and pickle.loads. For advanced Zopsters it is perfect as a base class. Basically ZPickle adds pickle support to your class. Pretty cool. The reason why I think it is usefull is, that you can now pickle objects you have in Zope and save them easily in DBs or simple text/string properties. The URL: http://www.zope.org/Members/srichter/ZPickle And, of course, I am welcoming any suggestions. :) cheers, stephan -- Stephan Richter iXL - Software Designer and Engineer CBU - Physics, Computer Science and Chemistry Student

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Puzzled re ZCatalog and Zope.org /SiteIndex
by Jeff Rush 03 Nov '99

03 Nov '99

I'm trying to duplicate the search engine approach used on the Zope.org site, find the /view_source a wonderful tool for poking about. [1] Some areas I'm having trouble on are the metadata and index fields used in DTML that accesses the SiteIndex zcatalog object. They use search fields like 'date', 'url', 'title_or_id' and 'text_content' which don't exist in a default zcatalog instance. I can add them via the management interface and re-catalog the site but nothing ever shows up in those index fields. Is Zope.org using some pluggable-brain technology to wrap a zcatalog and provide these attributes on normal, unchanged objects like DTML Documents and DTML Methods? [2] When I provide a searchForm (using Z Search wizard) that invokes a search DTML method wherein I call searchResults(REQUEST=REQUEST), it seems that searchResults() uses too much from REQUEST, pulling in default/invalid values for fields that the user decided not to supply, say not picking a meta_type from a drop-down list or leaving the date_usage value to 'modified since ever'. This causes searchResults() to return every item in the zcatalog, since -every- item has been modified since 'ever'. ;-) [3] I see in the Python source that I can invoke Python methods to wrap/assign a pluggable-brain class to a catalog -- is there a way to do this via DTML, or at least via the management interface so I can define the brain to use when I initially create the catalog instance? [4] The Zope.org site uses a sort_link() method in the SiteIndex search method, but I cannot find it anyplace on Zope.org. Is it an external method I can't reach? It seems a simple enough method that constructs links on the column headings to allow a user to re-sort the records on different columns. It's worth a HOW-TO. [5] There is also an icon_for_meta_type method in the SiteIndex container that maps a meta_type string to the appropriate icon. It uses an explicit if-then list for this however, meaning that when new products are added to a site, their icons won't get picked up. To avoid the messiness of such, can we get a new method added to the next Zope release that globally maps any meta_type to whatever icon the management interface would use for that type? HE knows what icon to use, even for the OFSP product. [6] When I catalog the DTML Documents/Methods on my site, the textindex of the PrincipiaSearchSource value (the DTML source) is difficult to use because it takes the DTML source rather literally i.e. if I have <B>C++</B>, that is parsed and indexed as a single word, so searches for "C++" won't find it (at least that's what my tests seem to indicate). I suppose one solution is to define a PrincipiaSearchSource method for my objects that somehow filters out the xTML and returns just the raw text, but how can I do that for existing types like DTML Document/Methods? -Jeff Rush

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HTML entity syntax
by Alexandre Ratti 03 Nov '99

03 Nov '99

Hello, I came across the HTML entity syntax for variables (eg. using &dtml-myVar; instead of <dtml-var myVar>). I find it very interesting to simplify DTML code. I'll write up a tip. It doesn't seem widely used, though. It doens't show up often on this mailing list. Are there any reason not to use it? Cheers. Alexandre

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How-To: Roxen Challenger and Zope
by Magnus Heino 03 Nov '99

03 Nov '99

Hiya. I just wrote the "Roxen Challenger and Zope" HowTo. Since I know that some of you have installed Roxen and Zope lately, I would appreciate any comments you may have before I make it public. http://www.zope.org/Members/magnus/Roxen /Magnus Heino

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Fwd: Selection Lists Draft Howto
by Alexandre Ratti 03 Nov '99

03 Nov '99

Hello, I uploaded version 0.2 of the Selection List Howto. You can read it there: <http://www.zope.org/Members/AlexR/SelectionLists>. Changes: I added a simple example showing how to fill a selection list from an external method. (Don't laugh when you see my code; I'm just getting started with Python.) Feel free to send me your feedback about this draft. I plan to release the howto at the end of the week. Cheers. Alexandre >Date: Sun, 31 Oct 1999 15:04:38 +0100 >To: zope(a)zope.org >From: Alexandre Ratti <alex(a)gabuzomeu.net> >Subject: Selection Lists Draft Howto > >Hello, > > >I experimented with selection lists last week and I summarized my findings >in a howto. > >You can view the 1st draft here: ><http://www.zope.org/Members/AlexR/SelectionLists>. > >It explains how to create simple selection lists, fill them from loops, >properties, TinyTables, etc. and retrieve the selected values. > >Feel free to send me your feedback. > > >Cheers. > >Alexandre

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Re: [Zope] Java Port
by smoerk＠gmx.de 03 Nov '99

03 Nov '99

>> Did anyone try to compile Zope with JPython? > >Nope, and it would require large amounts of C code be ported from the rather >easy CPython/C interface to JNI, which is to be kind, baroque and obtuse. It would be silly to use C code in a Java port. We have to port the C code to Java code is it impossible or not efficient to implement the C parts in Java? >If >someone wishes to do this, we certainly wouldn't stop them, but it's not a >strategic direction for us at this point, and therefore we have no resources >to dedicate to it. :-)

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