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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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Re: [Zope] Structured Text Rendering
by Dieter Maurer 16 Aug '00

16 Aug '00

Chris Withers writes: > I have a list of string.strip'ped strings which I'd like to render using !!!!!!!!!!!! > structured text. > .... > Input: > """ > sdfsdf > > - sdfsdf > > - sdfsdf > > - sdfsdf > """ > Structured text output: > """ > p>sdfsdf > > - sdfsdf > > - sdfsdf > > - sdfsdf > > </p> > """ > (what happened to the < for the <P> ? I do not know > 2) why just the one paragraph beign picked up, instead of 4? You said, the list consists of "strip"ped strings? Structured text uses indentation and newlines to determine paragraphs and their nesting. > 3) why are the '-'s being turned into list items? This is what structured text should do: a paragraph (!) starting with '-' or '*' is turned into a list item. Because, however, no paragraphs are recognized, I would not expect to see list items. Dieter

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UserDb, GUF, LoginManager, etc, which one?
by Martijn Faassen 16 Aug '00

16 Aug '00

Hi there, What I want is an acl_users equivalent that has an SQL database backend. I want an easy to understand, easy to install solution for this that has some kind of future in Zope land. Currently I'm deploying 2.1 but that should change into 2.2 eventually. UserDb isn't developed anymore. Besides, it might not work for 2.2. (does it?) GenericUserFolder is not developed anymore. Besides, it might not work for 2.2. (does it?) LoginManager is being developed. *But* it is dependent on ZPatterns, which is: * Another prerequisite * far too much for me to swallow right now. It sorts of doubles Zope's already not insignificant level of jargon and confusion. * under heavy development; lots of changes happening all the time, invalidating APIs etc. * needs a C module to be compiled. On Linux (development platform) that's okay, but it's not on my current deployment platform, Windows NT. I don't have a C compiler there. So what do I do if I want an SQL backend for my acl_users folder? This part of Zope seems to be becoming ever *more* complicated; the past seems to have been actually easier and simpler in this case. I just want to dump in a product, do minimal configuration, and be done with it. Is there any solution to my problem? Do I have to risk installing development versions of LoginManager/ZPatterns, or risk installing something that's not being developed anymore? Is there another way out? Regards, Martijn

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Is this a bug? Posting data to another DTML document
by Jarkko Veijalainen 16 Aug '00

16 Aug '00

I developed my project on Zope 2.1.6 on NT environment. Last week i installed Zope 2.2.0 on Solaris 8. i transferred my project to 'new' Zope. But when i try to access my DTML document comes authentication window. I can't authenticate it in any of my usernames. Traceback (innermost last): File /usr/local/Zope-2.2.0/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /usr/local/Zope-2.2.0/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/Zope-2.2.0/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/Zope-2.2.0/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: email_accounts) File /usr/local/Zope-2.2.0/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: email_accounts) File /usr/local/Zope-2.2.0/lib/python/OFS/DTMLDocument.py, line 170, in __call__ (Object: email_accounts) File /usr/local/Zope-2.2.0/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: email_accounts) File /usr/local/Zope-2.2.0/lib/python/DocumentTemplate/DT_Let.py, line 147, in render (Object: resDTML="Imap('Authentication',REQUEST,1)") File /usr/local/Zope-2.2.0/lib/python/DocumentTemplate/DT_Util.py, line 337, in eval (Object: resDTML.cn) (Info: resDTML) File <string>, line 0, in ? File /usr/local/Zope-2.2.0/lib/python/DocumentTemplate/DT_Util.py, line 142, in careful_getattr File /usr/local/Zope-2.2.0/lib/python/OFS/DTMLMethod.py, line 189, in validate (Object: email_accounts) File /usr/local/Zope-2.2.0/lib/python/AccessControl/SecurityManager.py, line 139, in validate File /usr/local/Zope-2.2.0/lib/python/AccessControl/ZopeSecurityPolicy.py, line 159, in validate Unauthorized: cn case is that i have login window which passes user information to another DTML document. User information is different than my zope user. ex. i log into my Zope management as jarkkov (so that stays at my browsers cache, until i restart browser) i type in my login document '666666' and 'password', these values are submitted to another document called email_accounts, which uses external method with submitted parametres and return values into email_accounts document. Above error message is shown. in zope 2.1.6 environment it did'nt happen. I tied to create all kind of users on users folder and tried to give all permissions to anonymous user and tried to access anonymously thrue another browser, but nothing seems to work. This is essential that i can anonymously access to this DTML documents and submit any kind of values on my REQUEST. All the documents are on subfolder called testweb and i noticed that Zope 2.2.0, i have ownership in all documents and folders. testweb is owned directly by jarkkov (testweb/acl_users) and all documents in that folder. I also tried post data to email_accounts thrue browser like this: http://194.42.57.17:8080/proto_test/email_acounts?cn=666666&password=1234 on Zope 2.1.6 it worked, but with Zope 2.2.0, ZServer asked authentication. I can't remove ownership or can i? Is it the blocking my access anonymously to documents? What i have to do to make my project work on new Zope version? jarkkov

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Import Error 'PTKDemo' - but *no* PTKDemo objects around..
by Tony McDonald 16 Aug '00

16 Aug '00

Hi all, I'm having a nightmare here. I have a Zope 2.2 (src, solaris) installation that I built from scratch. Then, because *it would not* import an exported folder from a 2.1.6 installation I had to use the Data.fs from the 2.1.6 installation and strip out everything other than the folder I was interested in. Things seemed to be ok, but I found a nasty error I can't get around. I wanted to use the 'advanced' tab on a ZSQL method and immediately got this traceback. This happens on *any* ZSQL method. I use the ZMySQL database adaptor.   I've also tried this with Zope 2.2.1b1 and get the same result. Any thoughts would be appreciated here, I'm out of ideas. 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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Meet Paul Everitt at the Paris Zope Meeting !
by Maik Roeder 16 Aug '00

16 Aug '00

Hi everyone ! The Paris Zope Meeting is a great opportunity for Europe's Zope community to meet Paul Everitt, CEO of Digital Creations, who is currently in France for holidays. It is also a chance to meet Zope developers from England, Germany, Switzerland and of course France. If you want to come to the event, please send a mail to eurozope(a)comlounge.net to let us know about your plans. Maybe some of us can already gather a day or two before the event ? A list of people who have already registered is available here: http://portalux.com/nnl/documents/zope-meeting/list Event Details: Date: Wednesday August 23rd 2000 Exact time: To be announced later Place: 18, rue du Faubourg du Temple - 75011 Paris Registration: http://portalux.com/nnl/documents/zope-meeting/ WebSite: http://zdp.zope.org/projects/eurozope/events/pariszopemeeting Mailing List: http://comlounge.net/mailman/listinfo/eurozope There are some talks planned, but due to the short preparation time, these are not fixed (yet). Maybe you can give a talk as well ? Just let us know. This is the first event organized by the EuroZope initiative, which tries to better support Zope in Europe due to the great response we received at the Linuxtag 2000 in Stuttgart. EuroZope infos: http://zdp.zope.org/projects/eurozope Maybe you want to attend some of the other events planned by the EuroZope team ? http://zdp.zope.org/projects/eurozope/events We still need Zopers who would like to help us organizing those future events. Let's discuss it on the EuroZope mailing list: http://comlounge.net/mailman/listinfo/eurozope Greetings, Maik Röder -- "The computing future is based on "cyberbodies" - self-contained, neatly-ordered, beautifully-laid-out collections of information, like immaculate giant gardens." The second coming - A manifesto. David Gelernter http://www.edge.org/3rd_culture/gelernter/gelernter_p1.html

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Hotfixes: serious suggestion
by Frank Tegtmeyer 16 Aug '00

16 Aug '00

Hi all, I already wrote it to DC but got no response, so I will try to get some feedback here. At the moment DC uses the north american way of expressing dates and assigns them in this form to the names of the Hotfixes. I propose another naming scheme and will explain the reasons below. The current format is Hotfix_08_09_2000, my proposed format is Hotfix_2000-08-09. This is the ISO 8601 format (abbreviated form). Reasoning: First of all Zope is a product of a north american company but is used worldwide. Not all countries use the american form of dates, so it would be nice to have a standardized one (in my opinion this applies also to the standard date functions in Zope). The reasons for establishing ISO 8601 apply here as well: - ordering of month and day are different in Europe and America, this leads to difficulties interpreting date values - ISO dates are sortable by string functions - ISO dates are easy to parse by humans AND programs Opinions? Regards, Frank

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