July 2001 - Zope - Zope lists

virtual hosting, Zope.cgi, and apache
by Jack Coates 30 Jul '01

30 Jul '01

Hi all, I've always written everything in a text editor, so this whole app server thing is new to me... I've done my homework though, and Zope looks like what I want to build some better sites. I'm having trouble with virtual hosting, though. Here's what I've got (on Mandrake Linux 7.2, Apache 1.3.14): Apache on port 80, (3) name-based virtual hosts: works Apache mod_rewrite directives pointing to zope: works <IfModule mod_rewrite.c> RewriteEngine on RewriteLog "/var/log/httpd/baydoula-rewrite_log" RewriteLogLevel 1 # Let Apache handle requests for non-Zope content RewriteRule ^/static/(.*) /var/www/baydoula/$1 [L] RewriteRule ^/icons/(.*) - [L] RewriteRule ^/cgi-bin/(.*) - [L] RewriteRule ^/webalizer/(.*) - [L] RewriteRule ^/mailman/(.*) - [L] RewriteRule ^/zopedocs/(.*) - [L] # Ensure the documentroot is served by Zope and Apache passes # authentication headers to Zope as well. RewriteCond %{HTTP:Authorization} ^(.*) RewriteRule ^(.*) /var/www/baydoula/zope/Zope.cgi$1 \ [e=HTTP_CGI_AUTHORIZATION:%1,t=application/x-httpd-cgi,L] </IfModule> Zope.cgi goes into Zope, in which everything seems to work. But, it's all one Zope. Reading the fine manual, it looks like I need to do a VirtualHostMonster and call subfolders, but it also looks like you need to use zserver to do that. 1) What's the best way to support three virtual hosts? 2) I assume Zserver would give better performance than Zope.cgi. Is it a big pain to switch? Seems like I would remove the pcgi .rpm and install the zserver .rpm, change the rewrites from files to localhost URLs, and restart zope and apache? 3) Failing that, are there a few files I can copy around to make separate installations? Bad idea (I suspect so, upgrades would get uglier than usual). Thanks, -- Jack Coates Monkeynoodle: It's what's for dinner!

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Re: [Zope] Trimming a text field in a form
by Frank Tegtmeyer 29 Jul '01

29 Jul '01

> What did Trim() do? trim() typically removes whitespace at the beginning and end of a string. I first saw it in dBase about 15 years ago, I think. Regards, Frank

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Re: Is there a "Virtual Folder" Product??
by Philipp Robbel 29 Jul '01

29 Jul '01

Hi everyone, my last question regarding the MFolder product would be how to make the root folder of a Zope installation a MFolder? So far I can only add new MFolders but not change an existing (= / root) to that. It would be great if Dieter or anyone else who's using MFolder could help me on this. Thanks in advance, Philipp Robbel

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Paypal Notification Parser
by Bill Anderson 29 Jul '01

29 Jul '01

Hello all, I was wondering if anyone has written a parser for Paypal's instant payment Notiifcation scheme. I would sure hate to reinvent this wheel. Bill Anderson

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Re: [Zope-dev] JavaScript in Zope
by Dieter Maurer 29 Jul '01

29 Jul '01

hi_pranita writes: > I am new to Zope and was keen to know how to add JavaScript in Zope JavaScript does not work inside Zope but in your browser. You put your JavaScript either in a Zope File object and reference it in your HTML with <script src=... /> or you place it directly in the generated HTML. For the second approach, you can use all Zope facilities for page generation. > Secondly how does one use a .zexp file ?? You import it. Some zexps can only be imported in the products folder... Dieter

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Re: [Zope-dev] JavaScript in Zope
by Michel Pelletier 29 Jul '01

29 Jul '01

hi_pranita wrote: > > Hi Hi Pranita, please direct questions like this to the main zope list (zope(a)zope.org) *not* zope-dev. I have moved this thread to that list. > I am new to Zope and was keen to know how to add JavaScript in Zope Javascript is a client side langauge and has nothing to do with Zope. Just add the javascript to your HTML like you would in any other system. > I tried looking into it in the various documentation & was unable to find a response. That's because javascript has nothing to do with zope. > Secondly how does one use a .zexp file ?? You can find the answer to that in the documentation: http://www.zope.org/Members/michel/ZB/BasicObject.dtml In the section 'Importing and Exporting Objects'. -Michel

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Python script sort by id
by Tim Hicks 29 Jul '01

29 Jul '01

I have a slightly strange problem with sorting in a python script. Basically, sorting by title and meta_type both work as expected, but by id produces totally random results that I cannot fathom (I really can't see any pattern at all). Here is the code snippet ------------------------ def sort_id(ob1, ob2): return cmp(ob1.id, ob2.id) def sort_title(ob1, ob2): return cmp(ob1.title, ob2.title) def sort_meta(ob1, ob2): return cmp(ob1.meta_type, ob2.meta_type) if context.REQUEST.has_key('sort'): obVals = context.objectValues(all_types) obVals.sort(sort_id) if context.REQUEST['sort'] == 'title': obVals.sort(sort_title) elif context.REQUEST['sort'] == 'object_type': obVals.sort(sort_meta) -------------------------- I have also tried: getattr(ob1, 'id') - which gives the same wierd results ob1.id() - which gives a TypeError of 'call of non-function (type string)' I copied this approach from Chris McD's post here (http://zope.nipltd.com/public/lists/zope-archive.nsf/ByKey/19E1DED84C7E413F) Can anyone tell me why the id sort goes so crazy? Thanks tim tim at sitefusion dot co dot uk

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zope and sitecopy
by Jean Jordaan 29 Jul '01

29 Jul '01

> From: Paul Everitt <paul(a)digicool.com> > > I've been using sitecopy (there's a Windows command-line port) > with some success. On this topic, my 2c: we're using sitecopy, but we're observing some odd, though consistent, behaviour. Short version: - 'sitecopy --fetch test' with protocol ftp is BROKEN: it gets all filenames as duplicates. - 'sitecopy --fetch test' with protocol webdav works just fine. - 'sitecopy --synch test' with protocol webdav is BROKEN: all Page Templates fail with 500 internal error. - 'sitecopy --synch test' with protocol ftp works just fine. Therefore, this way of working works: - Fetch via webdav, edit .sitecopyrc, and synch and update via ftp. If you need to fetch again (added objects Zopeside), go back to step 1. Other caveat: sitecopy seems to ignore ~/.netrc for ftp (requires username and password in ~/.sitecopyrc), but not for webdav. Long version: ------------------------------------------------------------------ Here is the relevant ~/.sitecopyrc stanza: ------------------------------------------------------------------ site test server localhost # '--synch' and '--update' via ftp # port 10021 # protocol ftp # '--fetch' via webdav port 10900 protocol webdav remote /zpt local /home/jean/work/feko-website/zpt state timesize username jean password xxxx nodelete # not everything is downloaded: don't delete those # files on the server exclude /acl_users exclude MailHost exclude *~ exclude *.swp ------------------------------------------------------------------ Fetch attempt via ftp: ------------------------------------------------------------------ [jean@blommie sitecopy-test]$ sitecopy --fetch test sitecopy: Fetching site `test' (on localhost in /zpt/) [...] File: apl_ant_pla.htm - size 7010 File: apl_ant_pla.htm - size 7010 File: apl_ant_des.htm - size 12058 File: apl_ant_des.htm - size 12058 Directory: faq/ Directory: faq/ Directory: images/ Directory: interface/ Directory: interface/ Directory: popups/ Directory: popups/ sitecopy: Fetch completed successfully. ------------------------------------------------------------------ Corresponding Zope log: ------------------------------------------------------------------ 127.0.0.14327 ==> 220 blommie FTP server (Medusa Async V1.13 [experimental]) ready. 127.0.0.14327 <== USER jean 127.0.0.14327 ==> 331 Password required. 127.0.0.14327 <== PASS <password> 127.0.0.14327 ==> 230 Login successful. 127.0.0.14327 <== PASV 127.0.0.14327 ==> 227 Entering Passive Mode (127,0,0,1,16,232) 127.0.0.14327 <== LIST -laR /zpt/ 127.0.0.14327 ==> 150 Opening ASCII mode data connection for file list 127.0.0.14327 ==> 226 Transfer complete 127.0.0.14327 <== QUIT 127.0.0.14327 ==> 221 Goodbye. ------------------------------------------------------------------ A subsequent ftp synch fails when trying to create directories repeatedly. Successful webdav fetch and failing webdav synch (note: fetching *images* works. The '*.htm' files below are all Page Templates): ------------------------------------------------------------------ [jean@blommie sitecopy-test]$ rm ~/.sitecopy/test [jean@blommie sitecopy-test]$ sitecopy --fetch test [...] [jean@blommie sitecopy-test]$ sitecopy --synch test sitecopy: Synchronizing site `test' (on localhost in /zpt/) Downloading interface/checkRequiredFields: [] failed: 500 Internal Server Error Downloading faq/mem_faq.htm: [] failed: 500 Internal Server Error Downloading faq/node1.html: [] failed: 500 Internal Server Error Downloading faq/node2.html: [] failed: 500 Internal Server Error Downloading faq/node3.html: [] failed: 500 Internal Server Error [...] ------------------------------------------------------------------ Corresponding log: ------------------------------------------------------------------ 127.0.0.1 - - [29/Jul/2001:18:48:26 +0200] "OPTIONS /zpt/ HTTP/1.1" 200 330 "" "sitecopy/0.10.15 neon/0.11.0" 127.0.0.1 - - [29/Jul/2001:18:48:36 +0200] "PROPFIND /zpt/ HTTP/1.1" 207 227986 "" "sitecopy/0.10.15 neon/0.11.0" 127.0.0.1 - - [29/Jul/2001:18:49:24 +0200] "OPTIONS /zpt/ HTTP/1.1" 200 330 "" "sitecopy/0.10.15 neon/0.11.0" 127.0.0.1 - - [29/Jul/2001:18:49:24 +0200] "GET /zpt/interface/checkRequiredFields HTTP/1.1" 500 4010 "" "sitecopy/0.10.15 neon/0.11.0" 127.0.0.1 - - [29/Jul/2001:18:49:25 +0200] "GET /zpt/faq/mem_faq.htm HTTP/1.1" 500 3994 "" "sitecopy/0.10.15 neon/0.11.0" ------------------------------------------------------------------ Successful fetch via ftp: ------------------------------------------------------------------ [jean@blommie sitecopy-test]$ sitecopy --synch test sitecopy: Synchronizing site `test' (on localhost in /zpt/) Downloading faq/mem_faq.htm: [.......] done. Downloading faq/node1.html: [................................] done. Downloading faq/node2.html: [....................................] done. Downloading faq/node3.html: [..................................] done. Downloading faq/node4.html: [...................................] done. Downloading faq/node5.html: [.............................] done. Downloading faq/node6.html: [..................] done. [...] ------------------------------------------------------------------ Corresponding Zope log: ------------------------------------------------------------------ 127.0.0.14334 ==> 220 blommie FTP server (Medusa Async V1.13 [experimental]) ready. 127.0.0.14334 <== USER jean 127.0.0.14334 ==> 331 Password required. 127.0.0.14334 <== PASS <password> 127.0.0.14334 ==> 230 Login successful. 127.0.0.14334 <== TYPE I 127.0.0.14334 ==> 200 Type set to Binary. 127.0.0.14334 <== PASV 127.0.0.14334 ==> 227 Entering Passive Mode (127,0,0,1,16,239) 127.0.0.14334 <== RETR /zpt/faq/mem_faq.htm 127.0.0.14334 ==> 150 Opening Binary mode data connection for file '/zpt/faq/mem_faq.htm' 127.0.0.14334 ==> 226 Transfer complete 127.0.0.14334 <== PASV 127.0.0.14334 ==> 227 Entering Passive Mode (127,0,0,1,16,241) 127.0.0.14334 <== RETR /zpt/faq/node1.html 127.0.0.14334 ==> 150 Opening Binary mode data connection for file '/zpt/faq/node1.html' [...] I hope this helps someone .. Jean

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Max M's A very minimal Product
by Ronald L. Chichester 29 Jul '01

29 Jul '01

Does anyone have Max M's e-mail address? It isn't under his member site. Nor is it on his products. I have a few questions for him, but can't get his e-mail address. Cheers, Ron

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Why SQLSession 0.3.0 sometimes gets stuck
by Shai Berger 29 Jul '01

29 Jul '01

Dear Anthony and Zopers, At Aristocart, we had been using SQLSession until a few months ago, for our e-commerce web application. We kept having problems where those sessions would get stuck, and sometimes cause the whole Zope instance to become hosed. After a few weeks of fiddling with the details of the SQL Methods (in part to add expiration to the sessions), we dispared and moved to CoreSessionTracking. CST 0.8 solved our hangs, crashes and stickiness problems. But we still needed a SQL-based sessioning mechanism, because this was standing between us and eliminating Zope's single-point-of-failure problem (as we keep all the application data in the relational database, if we could just move the sessions there too, we could have multiple Zope servers with read-only identical ZODBs). I ended up solving the problem by developing special product for keeping CST sessions on an Oracle database, SqlSDC. However, in the last phases of the struggle to make it work, I found out what was the problem with SQLSession. It is easy enough to fix, but I don't have the time to do it myself. The problem is, essentially, with the order of commits. SQLSession assumes that commiting is done in the order of registration, and the documentation even mentions a patch to Transaction.py to make its registration look like it happened earlier -- to ensure it is committed before the relevant database connection. This is a sensible assumption, and is almost correct, but not correct enough. When a Zope transaction includes other transactions -- like a relational database transaction -- it uses two phase commit. This means that there are two rounds of messages: The first, "tpc_begin", says essentially, "prepare to commit"; the second, "tpc_finish", says "commit". Most database adapters, and other naive descendents of ZRDB.TM (including SQLSession 0.3.0), ignore the first, and call their _finish() method when they receive the second. However, while tpc_begin messages are sent according to the order of registration, the transaction mechanism uses the loop going over registered objects to put those objects in a dictionary, and the tpc_finish calls are done by looping on the values of this dictionary. Effectively, this means the tpc_finish messages are sent in _random_ order. From the transaction's point of view, this does not make awful nonsense: They have all been warned, and second-phase commits should be trivial operations that never fail -- like a commit on a database, or a flush on a file. If you think about it a bit longer, the first phase of a two-phase-commit is the most natural place for actions such as running update and insert SQL commands for keeping saving sessions into a database. It is a sort of preparation, to be finalized by the database commit. The solution, therefore, is simple: Modify SQLSession by overriding TM's tpc_begin, tpc_abort and tpc_finish so that the _finish method is called from tpc_begin, and tpc_finish does nothing. I do not remember the SQLSession source details so well, but if the registered object is in the ZODB, this will lead to a conflict error; to bypass this, you need a separate object to handle registration. To see a way of doing this, you are invited to look at the source of my SessionDataContainerBase. Both above-mentioned products are available from http://www.zope.org/Members/shai. Have fun, Shai.

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