June 2000 - Zope - Zope lists

Re: [Zope] Accesing a new context from a manipulated string
by Rik Hoekstra 30 Jun '00

30 Jun '00

>Here's my problem: > >given a method itemURL(), that typically returns a site >relative URL such as '/about/', I need to change to the >appropriate directories context using <dtml-with>. > >In short I need to do the equivalent of <dtml-with about>. > >The closest I've gotten so far is: > ><dtml-with expr="_.getitem(itemURL(), 0)"> > >which generates a KeyError: /about/ in the traceback. > >Can anyone help me truncate the extra '/'s off of this >string and pass it to the <dtml-with>? > This is going to be awkward in DTML, but it can be done. But there may be some different cases (all untested): simplest case '/about/' : <dtml-let strippedURL="itemURL()[1:-1]"> strippedURL -> 'about' more intricate case '/about/whatever/' <dtml-let strippedURL="itemURL()[1:-1]"> <dtml-let strippedURL="_.string.replace(strippedURL, '/', '.')"> strippedURL -> 'about.whatever' or, more convoluted <dtml-let strippedURL="_.string.replace(itemURL()[1:-1], '/', '.')"> if you're not certain if your itemURL has a starting and a trailing /, you will have to make this conditional. You're better off using a PythonMethod then. hth Rik

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Why can't I subclass a ZSQLMethod?
by Cary O'Brien 30 Jun '00

30 Jun '00

I want to wrap a presentation layer around ZSQLQueries, so that they will have methods to generate an input form [1] for the query, and generate tabular results if so desired. I tried to create a ZClass to do this, but I can't subclass from a ZSQLMethod. Any other ideas on how to do this (besides a class where you have to tell it the ZSQLMethod to use)? -- cary [1] Using sql.arguments_str to find out the arguments. Finding THAT was a struggle!

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Re: [Zope] Re: ZODB or not ZODB?
by Dieter Maurer 30 Jun '00

30 Jun '00

Rogerio Atem de Carvalho writes: > Dieter Maurer writes > > the Zope world via LocalFS. > > I use ZCatalog to catalog objects in the file system included into > > the Zope world via LocalFS. > > How do you do to cache those objects, since LocalFS > referenced objects are not cached by Zope? ZCatalog only requires the objects being URL addressable; cachability is not an issue. Dieter

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Cut support
by Andy McKay 30 Jun '00

30 Jun '00

Heres a wierd one: I have a class inherited off of DTMLDocument. The object's I create from can be happily copied, deleted, renamed and pasted in pretty much any order. But when I do a cut then paste I get an error message relating to ac_acquire I guess trying to get hold of the absolute_url (for cataloging purposes). I assumed a cut and paste would be a copy, delete, paste in that order. Put in would appear not to be, since I can do that by hand. Thanks in advance.

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Question from ZopeNewbies poster. . .
by addyd＠unk.edu 30 Jun '00

30 Jun '00

I am forwarding to this list the following question asked on the ZopeNewbies discussion list today. I have told the poster about this list. You may wish to post your answer both here and on the ZopeNewbies discussion list page to make sure the poster sees your answer. Author: Kelvin, Tze Wai Cheong Posted: 6/30/00; 3:46:51 AM Msg#: 658 (top msg in thread) I'm developing a web-site which requires the storage of images in the database. I have defined this field as LONGBLOB in my database tables. The problem is I can't insert the image at the insert form, and worse of all I don't know how to start. according to the mySQL manual from mySQL.com's documentation, I should be storing the path of the picture file into the database. I have tried but ZOPE defined a floating-point error regarding the field. How should I go around this? ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: Darren Addy Internet Specialist and Interim Web Presence Coordinator Office of Information Technology Services University of Nebraska at Kearney

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Accesing a new context from a manipulated string
by Michael Bernstein 30 Jun '00

30 Jun '00

Here's my problem: given a method itemURL(), that typically returns a site relative URL such as '/about/', I need to change to the appropriate directories context using <dtml-with>. In short I need to do the equivalent of <dtml-with about>. The closest I've gotten so far is: <dtml-with expr="_.getitem(itemURL(), 0)"> which generates a KeyError: /about/ in the traceback. Can anyone help me truncate the extra '/'s off of this string and pass it to the <dtml-with>? Michael Bernstein.

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RE: [Zope] Kid clicking and Zope thread deadlock
by Hung Jung Lu 30 Jun '00

30 Jun '00

>From: Brian Lloyd <Brian(a)digicool.com> >The quick way to determine this: install a fresh Zope without >SybaseDA installed and see if you can reproduce the kid-clicking >behavior. > >Another thing potentially to look at: there is problem with >Sybase connections that I have run into before where if you >have a request that runs a transactional query, then a non- >transactional query, then trys another transactional query >you get a hang :( I don't know if this could be the case >here, but if so you might want to look here for more info: > >http://classic.zope.org:8080/Collector/1059/view Thank you very much! My preliminary test indicates that indeed the deadlock is coming from the Sybase database adapter. Zope alone seems to be doing fine (what a relief!), even under intense bombardment of http form requests. I'll have more about Sybase deadlocking later, as I try to isolate the problem. I think the problem is not only with transaction-non_transaction interaction. The problem happens even after I connect all the Zope threads to Sybase, and use transactions for all threads afterwards. regards, Hung Jung ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

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localization projects <Re: [Zope] Multiple Languages>
by tommy_b＠my-deja.com 30 Jun '00

30 Jun '00

Christian Zagrodnick wrote: >has anybody figured out how to make a zope website multilingual? There is ZIP - "A developer's group to make Zope more international." Their maillist is at http://www.eevolute.com/mailman/listinfo/zip Sadly, looking at the archives, it seems that the ZIP mailing list is dead. I hope it will come back to life. The only thing posted on it this month is an announcement of zzLocale, "a framework for Zope interface internationalization". http://www.zope.ne.jp/users/yemartin/zzLocale There is also Translator, that "helps with the localization of web sites built with Zope" http://www.zope.com/Members/fog/Translator Although I have not used these programs yet, internationalization will be an issue for me soon. This issue seems to come up every 6 weeks or so on zope(a)zope.org. I hope to see a FAQ for this soon from someone with more experience using these packages (it's author can feel free to cut & paste this email :). I also hope to see an announcement of updates of these & newer internationalization programs in the "Zope News" and "Zope Weekly News". These would be good ways to help keep the ball rolling! cheers --== Sent via Deja.com http://www.deja.com/ ==-- Before you buy.

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Re: [Zope] WebOS and Zope
by Jason Spisak 30 Jun '00

30 Jun '00

Curtis Maloney writes: > > Is it possible to simulate this sort of environment in an XML client? > > > Hmm... what sort of XML client did you have in mind? I may be wrong, but I > suspect you may have made a similar mistake to most people who encounter XML. > XML is not a whole data format, in much the same way as TCP is not a whole > protocol. > > HTTP is a protocol that uses TCP, just as XHTML and DocBook are data formats > that use XML. XML allows any XML compliant parser to PARSE the contents, but > not neccesarily COMPREHEND it. > > So, a custom XML client could be built which would understand whatever I sent > it, and display the desktop accordingly. However, an 'off the shelf' XML > 'client'... who could say. > I meant a custom client. Like the Jabber situation http://www.jabber.org All my best, Jason Spisak CIO HireTechs.com 6151 West Century Boulevard Suite 900 Los Angeles, CA 90045 P. 310.665.3444 F. 310.665.3544 Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email address may not be added to any commercial mail list with out my permission. Violation of my privacy with advertising or SPAM will result in a suit for a MINIMUM of $500 damages/incident, $1500 for repeats.

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Zope 2.2.0b3: can't call db_connection.query()
by Cary O'Brien 30 Jun '00

30 Jun '00

With Zope 2.2.0b3, I can't seem to call the query() method of a database connection any more. For example, with a PostgreSQL connection called dbconn, calling <dtml-with dbconn> <dtml-var "query('select count(*) from pg_class')"> </dtml-with> Works fine with 2.1.6, but with 2.2.0b3, I get... Zope Error Zope has encountered an error while publishing this resource. Unauthorized ... File /usr2/local/zope/Zope-2.2.0b3-src/lib/python/DocumentTemplate/DT_With.py, line 146, in render (Object: dbconn) File /usr2/local/zope/Zope-2.2.0b3-src/lib/python/DocumentTemplate/DT_Util.py, line 327, in eval (Object: query('select count(*) from pg_class')) (Info: query) File /usr2/local/zope/Zope-2.2.0b3-src/lib/python/OFS/DTMLMethod.py, line 189, in validate (Object: test1) File /usr2/local/zope/Zope-2.2.0b3-src/lib/python/AccessControl/SecurityManager.py, line 139, in validate File /usr2/local/zope/Zope-2.2.0b3-src/lib/python/AccessControl/ZopeSecurityPolicy.py, line 158, in validate Unauthorized: query Any ideas? There doesn't seem to be any permission to set. What I would like to do is add some functions to the PostgreSQL DA so I can view table names and column names. -- cary

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