August 2000 - Zope-Dev

Using other than NullResource to handle HTTP PUT
by Richard Barrett 01 Aug '00

01 Aug '00

I'm developing, in python, some classes whose instances to be published by Zope, one of which is folder-like, i.e. is can contain instances. I want HTTP PUT requests which will create new object instances within instances of this folder-like class to be handled by a PUT function I define. I cannot identify the "right" way to do this, or at least a way which doesn't involve hacking the standard Zope code to have my PUT function handle the operation. The normal behaviour of Zope appears to be to create an instance of the NullResource class and call the PUT function on that. This then proceeds to create a DTMLDocument, Image or File instance which is not what I need to happen; I want to have instances of one of my own classes created instead. Any advice appreciated especially if I'm missing something obvious. btw am I alone in struggling to understand the python classes underlying Zope's operation and how these classes work/ineract? I've read a lot of source code but still feel I have only the vaguest grasp of the theory of operation of the whole thing. Ho hum. ------------------------------------------------------------------ Richard Barrett, PostPoint 27, e-mail:r.barrett@ftel.co.uk Fujitsu Telecommunications Europe Ltd, tel: (44) 121 717 6337 Solihull Parkway, Birmingham Business Park, B37 7YU, England "Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well armed lamb contesting the vote." Benjamin Franklin, 1759 ------------------------------------------------------------------

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A few words about revision history
by Marcin Kasperski 01 Aug '00

01 Aug '00

[ I am Zope user, not Zope developer, I send this article first to zope users list but people advised me to discuss it on zope-dev ] The zope Undo mechanics is nice for clearing simple mistakes, but the screens filled with 'manage_edit by ...' does not provide too much information. What I would like is some high level website revision history. Below I discuss some ideas, please comment on them. Before details, main motivation: as the main zopesite manager (call me Stan ;-) ), I give my users permissions to edit parts of the website. But I would like to see their activities from the high level, with reports like 'at day such and such Johny the Spoiler performed change which he named "proofing our department pages" and this change touched the following objects: ...' (looks like info about saving a version enriched with info about objects saved). 1) I would like to disable the ability to edit anything outside some version. I guess that specifying some permissions in configuration would do, but before I spoil sth I would like to ask whether someone performed such a configuration and how was it defined? 2) Would be great, if attempt to edit outside of version prompted You are to edit this website outside any version. Choose to either join <.dropdownlist of existingversions> [JOIN] create and join new version of name: .......[CREATE] cancel edits [CANCEL] 3) Is it at all possible to check, whether some version is currently empty (no unsaved edits) or not - and if not, what is unsaved? 4) Is it possible (with current zope) to get changes history with manual edits grouped somehow (I'd prefer - instead of having 17 times 'manage_edit by tommy' - to see '17 manage_edit's by tommy') 5) CVS-like tagging mechanizm would be nice. Seems that version control is completely implemented, the only thing left is a method to add a comment at some places of database history - and to provide a method of browsing them. -- www.mk.maxi.pl | Systems built by humans are always subject to human Marcin.Kasperski | error. (Parnas) @softax.com.pl | @bigfoot.com |

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Problem with directories
by jdiebold＠imexpert.com 01 Aug '00

01 Aug '00

Hi, I want to create folder everywhere. So, I've built a tree that display a part of a directory. In that directory, I want my guest to create folder as deep as they can build. but, I can't : I'm limited to create folder in the directory where I am. I know that I should use the <dtml-with> tag ; but I can't dynamically build chained dtml-with tag. If anybody could help me.... thaks in advance...

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Re: [Zope-dev] Acquisition Confusion :S
by Simon Michael 01 Aug '00

01 Aug '00

"Evan Simpson" <evan(a)digicool.com> writes: > The IPC8 slides are in error, and need to be fixed. heh..like this stuff needs to be any harder.. still, can't have people breezing through it too quickly.. ;-)

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Strange local(?) bug in uploading files
by Peter Arvidsson 01 Aug '00

01 Aug '00

I have a major problem with uploading files. I am doing a form to upload PDF-files This is what it looks like (with only the relevant code): pdf_form: <form method="POST" action="pdf_method" enctype="multipart/form-data"> Title:<br> <input type="text" size="70" name="titlepdf:required"><br> PDF:<br> <input type="file" size="58" name="pdf:required"><br> <input type="submit" name="add" value="Next"><br> </form> pdf_method: <dtml-call "REQUEST.set('ts', ZopeTime())"> <dtml-call "REQUEST.set('pdfid',_.str(_.int(ts)))"> <dtml-call expr="manage_addFile(pdfid, file=pdf, title=titlepdf)"> When I run this code in 2.1.6 it almost works. The content_type is wrong but if you edit this property and set it to "application/pdf" it works. (This is another strange problem.. this should be set automaticlly. I doesnt work when I pass content_type='application/pdf' either.) However when I try to run this in Zope 2.2 i get the following error (with traceback): Error Type: AttributeError Error Value: seek Traceback (innermost last): File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: ElementWithAttributes) File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: pdf_method) File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: pdf_method) File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/OFS/DTMLMethod.py, line 167, in __call__ (Object: pdf_method) File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: pdf_method) File /usr/local/zope/lib/python/DocumentTemplate/DT_Util.py, line 342, in eval (Object: manage_addFile(pdfid, file=pdf, title=titlepdf)) (Info: pdf) File <string>, line 0, in ? File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/OFS/Image.py, line 125, in manage_addFile (Object: ElementWithAttributes) File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/OFS/Image.py, line 271, in manage_upload (Object: 965062238) File /usr/local/new.test.version.of.zope.DO.NOT.REMOVE/lib/python/OFS/Image.py, line 304, in _read_data (Object: 965062238) AttributeError: (see above) I tried to look in the python-files for manage_addFile but I didnt see anything wrong there (however I am a python newbie :) Why do I get this error in 2.2? I have tried everything and consulted the irc-channel but noone could help me. Is this a bug in 2.2 or am I doing something wrong?

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