March 1999 - Zope - Zope lists

Create zope property from external method?
by Andy Heath 12 Mar '99

12 Mar '99

I'm a zope newbie I have an external method in which I want to check whether a property within zope exists and if it doesn't exist to create it. How can I do this ? Andy -------------------------------------------------------------- Andy Heath, Senior Lecturer email: a.k.heath(a)shu.ac.uk o Sheffield Hallam University. Phone: +44 114 2534904 /\ Sheffield, England Fax: +44 114 2533161 () () --------------------------------------------------------------

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please interpret
by julian＠zereau.net 12 Mar '99

12 Mar '99

"TypeError: read-only buffer, class" I keep getting this error, please can someone explain what typically causes it? --- Julian Morrison Programmer (Zereau Ltd)

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Getting slashdot to work...
by Tony McDonald 12 Mar '99

12 Mar '99

HI all, In my quest to figure out how Zope works, I'm starting with ExtrenalMethods. I've moved slashdot.py into Extensions and set up an external method (id: get_headlines, funstion name: get_headlines, python module: slashdot). My 'calling' DTML is a method (slashdot_headlines) with the following;   <p> <a href=""></a> </p>  trying 'view' on this method gives the following;  ...  I *did* have a problem with using a proxy, but got around that by adding this line to slashdot.py (just before the urllib.urlopen() call). urllib.URLopener(proxies={'http': 'http://cache-box.you.domain:your_port'}) What am I doing wrong? many thanks tone ------ Dr Tony McDonald, FMCC, Networked Learning Environments Project The Medical School, Newcastle University Tel: +44 191 222 5888 Fingerprint: 3450 876D FA41 B926 D3DD F8C3 F2D0 C3B9 8B38 18A2

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Re: [Zope] Zope.cgi -> mod_zope
by Martijn Pieters 12 Mar '99

12 Mar '99

Whoops, here is a copy for the list as well... (I forgot to 'reply-all', *smirk*) At 13:09 12/03/99 , you wrote: >Hello! > > Is there any plan to make complex "Apache + Zope" even more efficient by >making Zope.cgi a module (mod_zope, let's name it, or mod_pcgi)? > I do hope there is. If implemented like the Apache JServ module (http://java.apache.org/) it should solve a lot of problems for everyone, adding performance to boot. JServ is in effect a separate process (like Zope) that receives it's request via the Apache server, with the help of a module, that translates the requests into socket calls. If someone modifies the module that comes with JServ to call the Zope process instead of the JServ process..... -- M.J. Pieters, Web Developer | Antraciet http://www.antraciet.nl | Tel: +31-35-6254545 Fax: +31-35-6254555 | mailto:mj@antraciet.nl http://www.antraciet.nl/~mj | PGP: http://wwwkeys.nl.pgp.net:11371/pks/lookup?op=get&search=0xA8A32149 ------------------------------------------

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RE: [Zope] Tree Tag & SQL
by Paul Everitt 12 Mar '99

12 Mar '99

Ron wrote: > Problem: how to have the tree tag use a different SQL method > for each level > WITHOUT resorting to external methods, because the directory > should be > maintainable by mere mortals, not Python or SQL gods. Hi Ron. Just a guess, but how about having the tree tag pass in the the current level as an argument to the same SQL method, then have the SQL method adapt itself based on the argument? Remember that an SQL method can embed logic and act like an object using DTML. For instance:  select ...  select ... etc. --Paul

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Re: [Zope] Apache Authorization
by Phil Harris 12 Mar '99

12 Mar '99

Turn on ExecCGI, you do need it ! ----- Original Message ----- From: Milos Prudek <prudek(a)sol.cz> To: Sebastian Luehnsdorf <sfl(a)beehive.de> Cc: <zope(a)zope.org> Sent: Thursday, March 11, 1999 1:16 PM Subject: Re: [Zope] Apache Authorization >Yes I turned rewite engine on, but maybe not in the right place. I wrote >it into global config. > >I believe do not need to use ExecCGI, since I use ScriptAlias. And >Zope.cgi gets executed, I otherwise wouldn't be able to get to Zope >introductory. > >I'm desperate.... > >------------ >Milos Prudek > >On Thu, 11 Mar 1999, Sebastian Luehnsdorf wrote: > >> No. Zope works fine with Apache 1.3.3. Did you remember to set the ExecCGI >> option? And did you remember to turn the RewriteEngine on? > > >_______________________________________________ >Zope maillist - Zope(a)zope.org >http://www.zope.org/mailman/listinfo/zope > >(For developer-specific issues, use the companion list, >zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev )

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PSFS or DTML
by Stephane Tallard 12 Mar '99

12 Mar '99

Hi all , We try to use DocumentTemplate not for HTML dynamic generation but for C++ generation. For convenience, and because we are familiar with Python we intend to use the Alternate Python String Format Syntax. The generation code is beautiful compared to our previous output.write("blah blah.... ") instructions. Reading the docs, looking at the Zope site, this behaviour doesn't seem to be shared by a lot of zope users. Moreover the Alternate Python String Format Syntax is poorly documented, and DTML features seems to be usable but the way they can be used seem very strange. Basically our needs are to use conditional structures, iterative structures and to call methods. The last point seems to be the hardest one. The following code shows a way to call python methods in python strings but 3 persons during half a day have been necessary to find it out. I suppose you can imagine my questions : Is there a natural and convenient way to find out PSFS expressions going from their DTML equivalent ? Is there a complete documentation on PSFS syntax ? Are the features of DTML and PSFS identical ? And the most important : Do you encourage us to keep on using PSFS instead of DTML ? Thank for your help Stephane my code ================================= import DocumentTemplate ########################################## class attr: def __init__(self,att): self.att = att def get_att(self): return self.att def get_num(self): return len(self.att) ########################################## l__list = [attr('aa'),attr('bb'),attr('cc')] l_str = DocumentTemplate.String(""" %(l_item fmt=get_att)s %(l_item fmt=get_num)3d %(in l_list)[ POUETPOUET %(sequence-var-get_att)s %(in)] """) dict = {'l_item':l__list[1], 'l_list':l__list} print l_str(None,dict)

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Fsimport problems
by Jim Bickford 12 Mar '99

12 Mar '99

Hi... I'm having no luck importing an existing file tree using fsimport with Zope-1.10.2 with pcgi Apache... it seemed to work well under 1.9 ... but then I was also using ZopeHttpServer Could that be the problem or something I have done.. Thanks guys for a great system... Cheers JimB This is the dump: Sorry, an error occurred. Traceback (innermost last): File lib/python/ZPublisher/Publish.py, line 877, in publish_module File lib/python/ZPublisher/Publish.py, line 590, in publish (Info: /Bio/fsimport) File lib/python/Products/ExternalMethod/ExternalMethod.py, line 254, in __call__ (Object: CopySource) (Info: ((<Folder instance at 0x82caab0>, '/home/jimb/AAA-work/bio.www/body', form: fsdir: '/home/jimb/AAA-work/bio.www/body' environ: DOCUMENT_ROOT: '/usr/local/Zope-1.10.2-linux2-x86/Zap/htdocs' HTTP_ACCEPT_ENCODING: 'gzip' SCRIPT_FILENAME: '/usr/local/Zope-1.10.2-linux2-x86/Zap/../Zope.cgi' PCGI_NAME: 'Main' PCGI_MODULE_PATH: '/usr/local/Zope-1.10.2-linux2-x86/lib/python/Main.py' SERVER_PORT: '9673' PATH_TRANSLATED: '/usr/local/Zope-1.10.2-linux2-x86/Zap/htdocs/Bio/fsimport' REMOTE_ADDR: '129.96.230.155' SCRIPT_NAME: '/Zope' PCGI_EXE: '/usr/local/Zope-1.10.2-linux2-x86/bin/python' HTTP_ACCEPT_LANGUAGE: 'en,de,af' PCGI_PUBLISHER: '/usr/local/Zope-1.10.2-linux2-x86/pcgi/pcgi_publisher.py' GATEWAY_INTERFACE: 'CGI/1.1' SERVER_NAME: 'daphne.bio.flinders.edu.au' HTTP_CONNECTION: 'Keep-Alive' HTTP_USER_AGENT: 'Mozilla/4.5 [en] (WinNT; I)' HTTP_ACCEPT_CHARSET: 'iso-8859-1,*,utf-8' HTTP_ACCEPT: 'image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*' REQUEST_URI: '/Zope/Bio/fsimport?fsdir=/home/jimb/AAA-work/bio.www/body' PCGI_INFO_FILE: '/usr/local/Zope-1.10.2-linux2-x86/Zap/../Zope.cgi' HTTP_COOKIE: 'tree-s="eJyLjjaMjQUABOIBog"; dtpref_rows="55"; dtpref_cols="100"' PATH: '/sbin:/usr/sbin:/bin:/usr/bin' QUERY_STRING: 'fsdir=/home/jimb/AAA-work/bio.www/body' SERVER_PROTOCOL: 'HTTP/1.0' HTTP_HOST: 'daphne.bio.flinders.edu.au:9673' SCRIPT_URL: '/Zope/Bio/fsimport' REMOTE_PORT: '1931' PCGI_PID_FILE: '/usr/local/Zope-1.10.2-linux2-x86/var/pcgi.pid' SERVER_SIGNATURE: '' SCRIPT_URI: 'http://daphne.bio.flinders.edu.au:9673/Zope/Bio/fsimport' PCGI_SOCKET_FILE: '/usr/local/Zope-1.10.2-linux2-x86/var/pcgi.soc' SERVER_ADMIN: '[no address given]' SERVER_SOFTWARE: 'Apache/1.3.4 (Unix)' PYTHONHOME: '/usr/local/Zope-1.10.2-linux2-x86' PCGI_DISPLAY_ERRORS: '1' PATH_INFO: '/Bio/fsimport' BOBO_REALM: 'Zope' BOBO_DEBUG_MODE: '1' HTTP_PRAGMA: 'no-cache' REQUEST_METHOD: 'GET' PCGI_ERROR_LOG: '/usr/local/Zope-1.10.2-linux2-x86/var/pcgi.log' ), {}, (None,))) TypeError: read-only buffer, class -- --------------------------------------------------------------------- Jim.Bickford(a)flinders.edu.au Biological Sci Flinders University 61 8 8201 3179(v) 61 8 8201 3015(f) South Australia 5042 ---------------------------------------------------------------------

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ANNOUNCE: Advanced DTML HowTo
by Amos Latteier 12 Mar '99

12 Mar '99

Hello Zopesters: Are you confused by the subtleties of DTML? Want the skinny on advanced DTML tricks and gotchas? Check out my advanced DTML HowTo: http://www.zope.org/Documentation/HowTo/DTML This document explains in detail the concepts behind advanced DTML tricks like indirect variable lookup, setting variables, calling sub-templates with different client objects, etc. Its main emphasis is on understanding how DTML uses a namespace stack to manage variable lookups. Enjoy and send me your feedback. -Amos P.S. Probably at least some of this material will be incorporated into the DTML User's Guide in the future.

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access content informations & use mailhost services properties
by Service Informatique CHSR 12 Mar '99

12 Mar '99

Hello, Correct me if i'm wrong: one has got to have "access content informations" permission to be able to write:  right? I've been bitten with that, and once i gave "access content informations" to the Anonymous User, my problem went away. Also, before I submit this to the Collector, is it normal that the "use mailhost services" doesn't appear in the security tab of the folders? Each product has its permissions that are listed, but nothing with the mailhost object. I had to change it directly in the mailhost object. If it's normal, it means that i can't give global permission for mailhost objects??? What confuse me, however, is that the mailhost object claims to "acquire" permission settings from its parents, but nowhere in its parents i can define the permissions. Regards, Jephte CLAIN Service Informatique CHSR

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