August 2000 - Zope - Zope lists

HTTP_ACCEPT
by Spicklemire, Jerry 16 Aug '00

16 Aug '00

Greetings Zope Fans, There is a value included in "REQUEST" called HTTP_ACCEPT. Is there a way within Zope to reset this value? The default seems to be "*/*", but our sysadmin says Zope would get along better if we can change it to include the alias that Zope has been assigned by our Proxy Server. Thanks! Jery S.

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Import classes in External method
by Francois-Regis CHALAOUX 16 Aug '00

16 Aug '00

Hi, How to import classes in an External method? I mean, where to place the module where my class is defined. I tried to put it in "lib/python/" or "Zope-2-2-0/lib/python/Shared", or in "/usr/lib/python1.5/" but I always got the same message : The errror ======= Error Type: SystemError</STRONG><BR> Error Value: Failed to import class myclass from module __main__ mycode ====== import module_of_class def useClass(self): foo = module_of_class.myclass() Bye, FR.

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Extra spaces on the end of id's?
by Jean Jordaan 16 Aug '00

16 Aug '00

Hi Zopers What's with the spaces ('%20') in the following from:: <site>/Control_Panel/Products/ccDoc/ccDocClass/propertysheets/methods/manage _main <FORM ACTION="http://corpcomms/Control_Panel/Products/ccDoc/ccDocClass/propertyshe ets/methods" METHOD="POST"> <TABLE BORDER="0" CELLSPACING="0" CELLPADDING="2"> [...] <TD ALIGN="LEFT" VALIGN="TOP"> <A HREF="edit_properties%20/manage_workspace"> <IMG SRC="/misc_/OFSP/dtmlmethod.gif" ALT="[DTML Method]" BORDER="0"></A> </TD> <TD ALIGN="LEFT" VALIGN="TOP"> <A HREF="edit_properties%20/manage_workspace"> edit_properties </A> </TD> [...] <A HREF="edit_propertiesForm%20/manage_workspace"> <IMG SRC="/misc_/OFSP/dtmlmethod.gif" ALT="[DTML Method]" BORDER="0"></A> </TD> <TD ALIGN="LEFT" VALIGN="TOP"> <A HREF="edit_propertiesForm%20/manage_workspace"> edit_propertiesForm </A> </TD> [...] </TABLE> -- Jean Jordaan -- technical writer -- Mosaic Sofware -- Zope 2.1.6 on W2K

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intermittent problems downloading portal files
by Lucas Hofman 16 Aug '00

16 Aug '00

We use PTK as an intranet for a R&D company. Users publish their reports as in PDF format using portal file object type. Now and then (enough to be irritating, but not reproducable on demand) the PDF file gets corrupted in the download, resulting in the reader complaining (typically "file does not start with %PDF...") The server runs linux (mandrake 7), Zserver2.1.6, Zope 2.1.6 and PTK 0.7.1 The clients are heterogenous, IE5, Netscape 4.x on both PC and workstations. Anybody a clue what can cause this? -- Lucas Hofman PGS Seres tel: +47 67514059 PO Box 354 fax: +47 67526640 N-1324 Lysaker, Norway

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Re: [Zope] ProxyPass - where ???
by Stephan Goeldi 16 Aug '00

16 Aug '00

How about a trailing / after okstudio? ><VirtualHost 123.45.678.9> >ServerName www.mydomaine.com.au >ProxyPass / http://demon.server.com.au:8080/okstudio >ProxyPassReverse / http://demon.server.com.au:8080/okstudio ></VirtualHost> ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

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__call__ error message - I gave up
by cuiod-tec Jens Gelhaar 16 Aug '00

16 Aug '00

What I like to do is pretty simple, but I don't get it. The following code snippet is simple and what I want to is straightforward: <dtml-in "objectItems('DTML Document')"> <dtml-var sequence-item> </dtml-in> All DTML Documents in a Folder should be put together in one document. It works fine, if there is no reference to another object. But when I put something like <dmtl-var imageobject> in one of this DTML Document I get the appended error message. Any Idea Jens ---------------------------------------------------- Error Type: AttributeError Error Value: __call__ Traceback (innermost last): File E:\Programme\WebSite\lib\python\ZPublisher\Publish.py, line 222, in publish_module File E:\Programme\WebSite\lib\python\ZPublisher\Publish.py, line 187, in publish File E:\Programme\WebSite\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File E:\Programme\WebSite\lib\python\ZPublisher\Publish.py, line 171, in publish File E:\Programme\WebSite\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: index_html) File E:\Programme\WebSite\lib\python\ZPublisher\Publish.py, line 112, in call_object (Object: index_html) File E:\Programme\WebSite\lib\python\OFS\DTMLMethod.py, line 172, in __call__ (Object: index_html) File E:\Programme\WebSite\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: index_html) File E:\Programme\WebSite\lib\python\DocumentTemplate\DT_In.py, line 691, in renderwob (Object: objectItems('DTML Document')) File E:\Programme\WebSite\lib\python\OFS\DTMLDocument.py, line 167, in __call__ (Object: subdocument) File E:\Programme\WebSite\lib\python\DocumentTemplate\DT_String.py, line 502, in __call__ (Object: subdocument) AttributeError: (see above)

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Simple acquisition (?) question
by Jean Jordaan 16 Aug '00

16 Aug '00

Hi all I have 'index_html (Welcome to the Mosaic Intranet)' and 'standard_html_header' in '/' (the site root). 'standard_html_header' does the usual::  Maybe I shouldn't be, but I was somewhat surprised that this renders the title of '/' instead of the title of 'index_html'. ("title" == "the title property of"). What further confuses me is that '/docs' has no title, and it contains 'index_html (Document Warehouse)'. Now 'standard_html_header' renders '/docs/index_html's title. If '/' has no title and '/index_html' does, 'standard_html_header' renders no title. This seems inconsistent. Because there's acquisition stuff that escapes me, doubtless. Anyone have 50c worth of enlightenment? -- Jean Jordaan -- technical writer -- Mosaic Sofware -- Zope 2.1.6 on W2K

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getting rid of PTKDemo
by Tony McDonald 16 Aug '00

16 Aug '00

Anyone know how I can get rid of this? I don't have it in my lib/python/Products folder. I don't have it in my Control_Panel/Products folder. I have compacted the database and restarted my server. I still get errors when trying to do selecte the 'Advanced tab' in *any* ZSQL method. Anyone who tells me how to get rid of this thing gets a pint (you'll have to come to Newcastle to collect).... cheers Tone ------ Dr Tony McDonald, FMCC, Networked Learning Environments Project http://nle.ncl.ac.uk/ The Medical School, Newcastle University Tel: +44 191 222 5116 Fingerprint: 3450 876D FA41 B926 D3DD F8C3 F2D0 C3B9 8B38 18A2

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HOWTO (but to be improved) - linking to neighbours
by Marcin Kasperski 16 Aug '00

16 Aug '00

[ Below I describe my solution to the problem which seems to me to be fairly frequent. Maybe someone is interested, maybe someone can show me better (faster, shorter) solution ] * Problem The problem: while presenting some page, I would like to automagically add links to 'previous' and 'next' page in the same directory. Say you organize a bunch of HOWTOS and you would like to let the people navigate via 'next' links - without going back go table of contents. * Idea What I really need is to calculate identifiers of 'neighbours' of my page in its container. I do have id of the current page, I can easily got list of all identifiers in the container. So I can just scan this list, find my id and read previous and next element. Transforming it into hyperlink is natural. * Code First I create the following Python Method (could be External Method as well). The method returns tuple (previous_id, next_id) substituting '' if there is no such element (we are at the start or at the end). ---------- Name: neighbours Parameters: self,myId,allIds Contents: position = 0 for x in range(0, len(allIds)): if allIds[x] == myId: position = x break else: raise 'Internal inconsistency: id ' + str(myId) + ' does not belong to list ' + str(allIds) left = '' right = '' if position > 0: left = allIds[position - 1] if position < len(allIds) - 1: right = allIds[position + 1] return (left, right) ---------- Then I add standard_html_footer DTML Method to the directory with my iterated items. I put there sth like that (of course presentation can vary, 'MyHowto' is the metatype of objects I iterate over, as you can see I call original footer after writting my navigational details): --------- <p> <dtml-let allIds="PARENTS[0].objectIds(['MyHowto'])" myId=id neigh="neighbours(myId,allIds)"> <table border="0" width="90%" align="center"><tr> <td width="33%" align="left"> <dtml-if "neigh[0] != ''"> <a href="<dtml-var "neigh[0]">">Previous</a> <dtml-else>   </dtml-if> </td> <td width="33%" align="center"> <a href="<dtml-var howto_index url>">Table of Contents</a> </td> <td width="33%" align="right"> <dtml-if "neigh[1] != ''"> <a href="<dtml-var "neigh[1]">">Next</a> <dtml-else>   </dtml-if> </td> </tr></table> </dtml-let> <dtml-with "PARENTS[1]"> <dtml-var standard_html_footer> </dtml-with> ---------- (by the way I do not know why I need 'myId=id' in <let> - but removing it and putting id on the neighbours parameters list does not work) * Unsolved problems There are two important unsolved problems: - efficiency - I perform linear scan which can be expensive if my directory contains a lot of objects (I do not know good method to solve it - I would need some help from Folder class) - order - if I need to present my objects in some order other than default, I would need to sort allIds in some way (probably I would need youse objectValues instead of objectIds) * Minor tricks The python method I wrote is generic, I use the same method for two different folders. In fact I worked around the order problem for the very simple case - presenting everything in reverse order. I just exchanged neigh[0] and neigh[1] in standard_html_footer. -- Serwis nie tylko mieszkaniowy: http://www.mk.w.pl | | You have the right to say how long each requirement will take you to | implement, and to revise estimates given experience. (Ken Beck's | Second Developer Right)

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Python class and ZClass
by Vincent 16 Aug '00

16 Aug '00

Hi, I would like to subclass a Python class with a ZClass. I mean that my DTML document will declare ZClass and I would like to be able to access the method declared in the python class (parent of the ZClass). Does anybody knows how to do that ? PS : I read a paper call "SubClassing from Custom Python classes", but I did not understood everything, so if somebody can give me an example or the main steps to solve my problem... Thank you very very much Vincent

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