November 1999 - Zope

ANN: PythonMethod Product v.0.1.5
by Evan Simpson 06 Nov '99

06 Nov '99

Once more into release, dear friends. v0.1.5 of PythonMethod is up at http://www.zope.org/Members/4am/PythonMethod Changes since v0.1.4: * Killed *%#&$@ weird bug in which having 'add' documents in 'www' subdirectory prevented rename, paste, or import of existing PythonMethods! See use of '_www'. * Range, test, and several other Zope 'builtins' had an unbound 'self' argument unless called on _, but that's fixed. * Safe multiplication was utterly broken (thanks to the guard); now it works. Is anyone using the safe version?? * Eliminated bug which delayed stringification of printed values. Cheers, Evan @ 4-am

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RE: [Zope] xmlrpc calls require string results?
by Toby Dickenson 05 Nov '99

05 Nov '99

> -----Original Message----- > From: Dan Pierson [mailto:dan@remote.control.com] > > > From: Toby Dickenson > > > > > # if a method called by it doesn't return a string. > > > # This is bogus, but: > > > return 'Done' > > > > > > BTW: all of this appears to me to be true whether or not > > Squishdot is > > > involved -- I have tested with target methods that are not > > part of it. > > > > > > What am I doing wrong here? > > > > Obviously xmlrpclib needs to be able to marshal the return > > value back to the > > caller. The xmlrpc spec has no equivalent of the 'None' that > > results from a > > returnless function in python, hence the error. > > > > The return values does not have to be a string; just > > something that xmlrpc > > understands. > > I can understand this in principal, but methods that return > simple integers > fail. I'd expect xmlrpc to be able to handle them. > > Also some of the articles in the Byte series talk about > passing structures > back and forth so I assumed that the xmlrpc support was smart > enought to do > things like pack a list of ids (i.e. list of strings) as an > XML structure on > its own. Well, it works ok for me. >>> xmlrpclib.Server('http://server/').objectIds() ['Control_Panel', 'standard_html_header', 'standard_html_footer', 'standard_erro r_message', 'acl_users' ......

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Unable to form a string with other strings
by Willie Peloquin 05 Nov '99

05 Nov '99

Hi Gang, I am trying to form a URL by concatenating some constant strings with some dtml variables. The variables contain the proper values, but they do not pass into the set. I have included some sample code and the the results.  <dtml-var mapUrl> <dtml-var address> <dtml-var city> <dtml-var state> It produces the following results: http://www.mapquest.com/cgi-bin/ia_free?width=800&height=500&streetaddress=& city=&state= 989 Veranda View Ave. Las Vegas NV What am I doing wrong here? Thanks, Willie Willie Peloquin Senior Software Engineer - Contract http://www.ismi.net/~wpeloqui "It is unwise to stray from the obvious and simple."

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complex question
by Sam Gendler 05 Nov '99

05 Nov '99

I have a table containing attributes (attribute_id, attribute_name_string), and I have a table associating an object_id with 0 or more attributes (object_id, attribute_id). I want to populate a sequence of checkboxes in a dtml doc that has a checkbox for every attribute, but only the attributes assigned to the current object are checked. I cannot seem to generate sql that returns a table that contains all attribute_ids and attribute_name_strings, but only has object_ids on the rows for attributes assigned to that object, so I need to do it by querying for all attributes and then looping through the assigned attributes, looking for a match. However, I can't seem to do that, since having nested <dtml-in> tags creates a conflict, since both queries need to return an attribute_id field, and I need to compare the attribute_ids of both queries. That made no sense, so here is an example. qrySelectAllAtt returns a complete list of (att_id, att_string) qrySelectObjAtt returns a list of all (obj_id, att_id) where obj_id=x <dtml-in qrySelectAllAtt> <input name="blah" type="checkbox" value="blah" <dtml-in qrySelectObjAtt> THIS NEXT LINE DOESN'T WORK <dtml-if qrySelectObjAtt.att_id == qrySelectAllAtt.att_id> checked> <dtml-break> </dtml-if> > </dtml-in> </dtml-in> Of course, I would prefer some SQL that would generate the table I want in a single query. Perhaps someone who understands all the funky <dtml-sql> commands coould help me out. Alternatively, I wrote an external method that can do this loop, no problem. However, This is just a small piece of a huge form, and most of the form is based off yet another, simple query. I would like to build a dtml doc on that simple query that builds the bulk of the form, and then call that doc from inside the external method. I can call my dtml document from the external method, but it doesn't receive the REQUEST object (or the folder object), so the query fails to execute. I cannot figure out how to pass variables into the dtml doc (or method) from my external method. Is this possible? Without the self (folder) object, the dtml document can do nothing but spit out straight html. I still prefer the single query method, however, as it allows the query to only run once, instead of several times in a loop. --sam

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RE: [Zope] ASE & ZOPE and general question
by Rob Page 05 Nov '99

05 Nov '99

> I just found ZOPE yesterday (that's how new I am to the > concept of ZOPE). I > am trying to find some info on how is it possible to connect > ASE with zope? > Also, what would be the best start to find out about simple > staff like > submitting data via forms to ASE using ZOPE generated pages? > Also passing > variables from page to page? I will assume that ASE is Sybase's Adaptive Server Enterprise. If so, then you need Zope and the Sybase Database Adapter (DA). The DA needs the Sybase client libraries to be loaded on the machine as well. Alternatively, if you are running Zope on Windows Something you can use ODBC DA and get ODBC drivers for Sybase. Essentially, Zope renders Document Templates to browsers. Document Templates can use ZSQLMethods (these SQL templates) to request data ZSQLMethods need to be associated with a database via a Database Connection object. Jeffrey Shell has written some useful How-Tos on the subject: http://www.zope.org/Members/jshell Hope this helps, --Rob

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ANNOUNCE: Zope 2.1.0 beta 1 released
by Brian Lloyd 05 Nov '99

05 Nov '99

Hi all. Zope 2.1.0 beta 1 has been released. This release includes many bug fixes, performance and reliability improvements and a number of new features such as the beginnings of internationalization support and relevance ranking for ZCatalog. You can get 2.1.0 beta 1 from: http://www.zope.org/Products/Zope/2.1.0b1/ I expect the beta period for this release to be pretty short - in about a week or so we expect to do either a b2 (if necessary) or a 2.1.0 final. Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Setting background image!!
by Joshi, Sunit 05 Nov '99

05 Nov '99

Could someone please tell me how to upload a background image using DTML. I tried the following <body bgcolor="#FFFFFF" background=<dtml-var bgImage> > but it does not work. Any other image works fine though thanks Sunit

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searching at zope.org
by R. David Murray 05 Nov '99

05 Nov '99

Hmm. I'm very new to Zope, but hoping to come up to speed quickly. So please forgive my vast ignorance <grin>. I've installed SiteAccess, and am working on my SetAccessRule method. Evan suggests one can differentiate virthosts based on assigned IP by using the variable SERVER_ADDRESS. I tried that, and got an error message about that variable not existing. Now, I haven't gotten too far through the docs yet, where I'm sure this stuff is explained, but I wanted to get a couple things up and running quickly. So I figured, well, I'll just search the zope.org site for that variable to find out how to reference it correctly. No matches. Well, maybe that's not the right name...but, I should have gotten *one* match, on Evan's document where I read about it, right? So is something wrong with the search function on zope.org? Or am I not understanding what is indexed (in which case the search page could use some explanatory text)? (Also, although I found the section of the manual I was looking for, I haven't found the variable I need yet...) --RDM

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Trouble starting ZServer
by Timothy Fairlie 05 Nov '99

05 Nov '99

Hello all, I am extremely new at playing with Zope and Python (just installed both today) Although the install seemed to go well, with no errors, I am having trouble getting the Zserver to start using the shell script. I am running Zope 2.0.1, Python1.5.2 on Digital Unix 4.0D. When running the "start" script, I get the following errors, repeated over and over, any help as to where to look would be greatly appreciated Here are the errors: ------------------------- Traceback (innermost last): File "z2.py", line 375, in ? exec "import "+MODULE in {} File "<string>", line 1, in ? File "/usr/users/fairlie/zope/Zope-2.0.1-src/lib/python/Zope/__init__.py", lin e 109, in ? DB=ZODB.FileStorage.FileStorage(Globals.BobobaseName) File "/usr/users/fairlie/zope/Zope-2.0.1-src/lib/python/ZODB/FileStorage.py", line 258, in __init__ lock_file(f) File "/usr/users/fairlie/zope/Zope-2.0.1-src/lib/python/ZODB/lock_file.py", li ne 101, in lock_file raise error, ( ZODB.POSException.StorageSystemError: Could not lock the database file. There m ust be another process that has opened the file. --------------------------- At this point, it pauses and repeats the same errors. T.. -- Timothy J. Fairlie Manager Instructional Technology Applications/WWW Rider University Fairlie(a)rider.edu

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external methods question
by Sam Gendler 05 Nov '99

05 Nov '99

I am really stumped on something. I have a dtml document that is processing the results of a post. I need to write some code in an external method that does some nested loops on 2 different queries (something I wasn't able to do in dtml, as far as I can tell). However, when I call the external method from the dtml doc, I can't pass the REQUEST to it. Alternatively, if I call the dtml method from an url (clicking directly on it), the dtml method receives the self and REQUEST objects, but I am unable to pass those objects to any of the other objects in the folder. I don't want to have to write the entire dtml page from the method, but I am unable to call a dtml document from inside the method, since <dtml-var standard_html_header> and any other dtml-var statements don't work without a 'self' object. Does anyone have a solution? --sam

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