February 2000 - Zope

RE: zope/style sheets
by Ben Glazer 02 Feb '00

02 Feb '00

> I saw your Nov 1999 post about sensing browser abilities. > > Did you ever get an answer? No, I didn't. :( However, I did come up with a workable (though certainly not elegant) solution on my own. (I hope you don't mind that I'm copying this message to the Zope list -- this might be useful to other people.) What I currently do (which is a bit of a kludge) is check to see whether the client's browser reports itself as compatible with Mozilla/4 or Mozilla/5 (Netscape Navigator, MS Internet Explorer, and Opera all pass this test). All I want to know is whether the browser includes ANY support for CSS, rather than what level of CSS support is provided. Your needs may be different. In case you're interested, the specifics of my implementation follow. I've written an external method called supportsCSS: import re def supportsCSS(self): """Checks (sort of) whether requesting browser supports stylesheets.""" if re.match('Mozilla/[45]', self.REQUEST.environ['HTTP_USER_AGENT']): return 1 else: return 0 Note that the version string test is hard-coded as a very simple regex. This (unfortunately) needs to be kept in mind for future browser changes (e.g. Mozilla 6.0). In my standard_html_header, I include something like: <dtml-if supportsCSS> Supports CSS. (Feel free to include stylesheets, etc.) <dtml-else> No CSS support. :( </dtml-if> Please let me know if you have any questions or suggestions for improvement. Regards, Ben

4 4

Zope Weekly News Rides Again
by Mike Pelletier 02 Feb '00

02 Feb '00

G'day, Zope Weekly News is a digest of some of the useful and interesting events which have occurred on the various Zope mailing lists and the Zope.org site. It is published each Wednesday evening. Any opinions contained in the Zope Weekly News are those of the chronicler exclusively. Suggestions for ZWN items are happily accepted. Please mail them to <mike(a)digicool.com>, put 'ZWN' somewhere in the subject and remember to include URLs. Announcements * ActiveState has announced it will be offering industrial-strength commercial Python support. ActiveState is renowned for their Perl support and development tools. The press release, linked below, includes comments from Paul Everitt. http://www.activestate.com/press/releases/python.htm * Frank Wilson, editor-in-chief at O'Reilly, presently has quite a lot of commentary on the IPC8, Python, Zope and Digital Creations in his "Frankly Speaking" column. http://www.oreilly.com/frank/ * O'Reilly recently launched their new portal, O'Reilly Network. The prestigious first feature is an interview with Paul Everitt, which explores some of the hidden gotchas and bonuses of opening up your software. The interview is available as text and three flavours of audio: High bandwidth RealAudio, low bandwidth RealAudio, and MP3. Nice! http://www.oreillynet.com/ http://www.oreillynet.com/pub/a/network/2000/01/25/interview/index.html * You can now follow ZopeStudio (aka the Zope-Mozilla Initiative) as it evolves by tracking the new ZopeMozilla CVS. For more information, see: http://lists.zope.org/pipermail/zope-announce/2000-January/000102.html * The Zope Portal Toolkit (PTK) is now a Real Live Product, and is also avalialable to be tracked by CVS. See the post in the zope-ptk(a)zope.org list. http://lists.zope.org/pipermail/zope-ptk/2000-February/000111.html * Chris McDonough <chrism(a)digicool.com> reported ZDNet UK's analysis of open source application servers Zope and Midgard. http://www.zope.org/Members/mcdonc/Links/zdnetuk-appserver * Trey Seaver <tseaver(a)palladion.com> announced the commencement of the Zope Guru of the Week "contest". Trey even made the application handling the ZGotW downloadable. http://zope.palladion.com/demos/ZGotW * "jwashin" submitted a "ZClasses Survey/quiz product". It is still undergoing development, and contributions are welcome. http://www.zope.org/Members/jwashin/Survey * Geeknews.org published an interesting interview with Rick Collette, head developer for SPIRO Linux. In it, Rick explains the reasoning behind including Zope as a distribution component. http://www.geeknews.org/features/interviews/spirolinuxinterview.html * Linux Weekly News offered the following link to ZopeNewbies' coverage of the IPC8 and it's Zope Track. Photos! http://weblogs.userland.com/zopeNewbies/ New Releases * Zope 2.1.3 has been released. This update contains fixes for a race condition that could cause Zope to hang on very high-traffic sites, two database packing bugs, and a bug that caused Zope to sometimes hang instead of shutting down when the shutdown function was accessed over a very fast network. http://www.zope.org/Products/Zope/2.1.3/ * "ngps" announced the availability of a very exciting product, "M2Crypto", which allows ZServer (and so Zope) to speak SSL natively. http://www.zope.org/Members/ngps/m2crypto_news * RainDog submitted version 0.0.1 of TTImage. TTImage renders arbitrary text to images on-the-fly. http://www.zope.org/Members/RainDog/TTImage * "haqa" has contributed "Favourite Links", a ZClass-based product which presumably manages a collection of links. http://www.zope.org/Members/haqa/ZLinks Updates and Patches * "kslee" contributed Zope patch which allows you to select from a list of default contents when creating a DTML Method/Document. http://www.zope.org/Members/kslee/DTML_Repository_Patch * "faassen" released version 0.2 of ZFormulator. http://www.zope.org/Members/faassen/ZFormulator/ * "phd" announced that mod_pcgi2 has reached version 1.0.0. http://www.zope.org/Members/phd/mod_pcgi2 * "jephte" updated jcNTUserFolder to version 0.0.2. http://www.zope.org/Members/jephte/jcNTUserFolder * "kslee" spent some time hacking on ZCatalog's splitter.py and the result was Voodoo Kludge Splitter. The splitter is what determines word breaks for full text searches. The Voodoo Kludge Splitter allows full text searches of non-ASCII content, such as Korean, Japanese and Chinese. There are caveats to be aware of. http://www.zope.org/Members/kslee/VoodooKludgeSplitter/ * Evan Simpson <evan(a)4-am.com> has brought his SiteAccess product up to version 1.0.0. This is the first stable release. SiteAccess allows you to use virtual hosting to make non-root Zope objects appear to be the root of your website. http://www.zope.org/Members/4am/SiteAccess * "htrd" contributed a Zope hack which "provides support for wide character strings in ZPublisher, property pages, and property sheets." http://www.zope.org/Members/htrd/wstring * "jules" contributed a HowTo which describes the creation of "Smarter" forms. The idea is to prevent the user from ever having to go "Back" by representing forms with prior inputs already filled in. http://www.zope.org/Members/jules/smarterforms_html/smarterforms_html * Another HowTo from "jules", this one describes auto-starting Zope on boot on a SuSE 6.3 system. http://www.zope.org/Members/jules/SuSE-6.3_html Zope.org items * Chris Petrilli <petrilli(a)digicool.com> has made all the slides from the tutorials he offered at the Zope Track of IPC8 available online. http://www.zope.org/Members/petrilli/Presentations/ * "kusako" contributed a Tip which explains how to catalog a group of properties as though they were one. http://www.zope.org/Members/kusako/AdvancedCataloging * Miklos Nemeth <nemeth(a)iqsoft.hu> submitted "How-To: Using Emacs with Zope on RedHat 6.1". It appears to walk the user through using Emacs as a Zope development environment. http://www.zope.org/Members/nemeth/usingEmacsWithZope * "rbickers" wrote an excellent HowTo on Running Zope on BeOS. The HowTo includes links to a suitable Zope binary. http://www.zope.org/Members/rbickers/Zope_on_BeOS * Continuing a thread, Jeffrey Shell <jeffrey(a)digicool.com> wrote a similar HowTo for MacOS X. http://www.zope.org/Members/jshell/buildingZopeOnMacOSXServer * "jephte" submitted a HowTo describing how to make Zope work in remote user mode (this is, making the webserver deal with Authentication) in conjunction with IIS. http://www.zope.org/Members/jephte/HOWTO/IIS_and_Zope_in_REMOTE_USER_mode * Chris Pertilli <petrilli(a)digicool.com> has started a Z SQL Method FAQ. He is accepting additional questions and answers. http://www.zope.org/Members/petrilli/ZSQLFAQ * Chris McDonough <chrism(a)digicool.com> wrote an EXTENSIVE HowTo describing the process of installing Zope and upgrading an existing Zope installation, complete with screenshots. If you are having difficulty getting Zope off the ground, this looks like the place to start. http://www.zope.org/Members/mcdonc/HowTos/zopeinstall/ZOPE-INSTALL-HOWTO * Miklos Nemeth <nemeth(a)iqsoft.hu> also contributed a HowTo about using the SQL Sessions product. SQL Sessions allows you to store arbitrary per-visitor state in an SQL database. http://www.zope.org/Members/nemeth/usingSQLSession * John Udell <udell(a)monad.net> wrote "How-To: A <dtml-calendar> example", which demonstrates managing per-date data with the <dtml-calendar> tag presenting the interface. http://www.zope.org/Members/judell/CalendarTagExample * "anthony" submitted "How-To: Choosing to store data in SQL vs ZODB". In it, he supplies a number of questions you can ask yourself to determine whether to keep application data in the Zope database or an external one. http://www.zope.org/Members/anthony/sql_vs_ZODB * Miklos Nemeth <nemeth(a)iqsoft.hu> has written another HowTo targeted at RedHat 6.1 users: "Zope and Apache on RedHat 6.1". http://www.zope.org/Members/nemeth/howtos/zopeandapacherh61 * Another Chris McDonough <chrism(a)digicool.com> HowTo: "Using the Zope Debug Log to Track Down Hangs". This HowTo includes a log file analyser. http://www.zope.org/Members/mcdonc/HowTos/DEBUG-LOG * Jim Fulton has made three of his IPC8 presentations available. They are "Introduction to the Zope Object Database", "Acquisition Algebra", and "Zope Architecture". http://www.zope.org/Members/jim/Info/IPC8/ZODB3News http://www.zope.org/Members/jim/Info/IPC8/AqAlgNews http://www.zope.org/Members/jim/Info/IPC8/ZopeArchNews -- Mike Pelletier.

1 0

Re: [Zope] RE: zope/style sheets
by J C Lawrence 02 Feb '00

02 Feb '00

On Wed, 02 Feb 2000 11:33:36 -0800 Sam Gendler <sgendler(a)impossible.com> wrote: > I would like to warn the community about serving multiple pages up > based on the exact same request url (which is what the code below > can contribute to). This doesn't make sense to me on account of cookies. Many sites out there have the content of their pages dynamic on the presence of a specific cookie, without varying the base URL at all. -- J C Lawrence Home: claw(a)kanga.nu ----------(*) Other: coder(a)kanga.nu --=| A man is as sane as he is dangerous to his environment |=--

2 1

RE: [Zope] Zcatalog and random numerical key error
by Michel Pelletier 02 Feb '00

02 Feb '00

> -----Original Message----- > From: - [mailto:kedai@kedai.com.my] > Sent: Monday, January 24, 2000 9:13 PM > To: zope(a)zope.org > Subject: [Zope] Zcatalog and random numerical key error > > > hi all, > > situation: > got a zclass, that is catalog aware. when searches are made, > some return > results, while other times it returns random numerical key > error. i remembered > seeing this symptom on zope.org last year. but it has now > disappeared. > anybody got a clue on what's going on? Your Catalog has gotten out of sync, just click 'Update Catalog' and it will fix itself. It's due to asking for uid of a record that is no longer cataloged. I don't know what could have caused it in your case, probably something in your DTML methods for the ZClass. -Michel

2 1

RE: [Zope] RE: zope/style sheets
by dale w lance 02 Feb '00

02 Feb '00

Ok, so how do we do a temporary redirect? Is this a chicken and egg problem? transparent caches wont fix this because no one uses it, no one uses it because transparent caches don't support it. signed, clueless newbie in zopeland > -----Original Message----- ---------------------SNIP ------------------ > These caches will cache the > first document that it gets > a request for, and then serve it for all subsequent requests. > This means that if a > 3.0 browser grabs this page first, all subsequent 4.0 > browsers will get the non > stylesheet page. This is bad. There are mechanisms built > into http/1.1 (netscape > isn't there yet, and I don't know about Opera) that allow a > server to mark a page as > varying on a particular header (Vary: user-agent, or > something similar), which should > cause a cache to cache different copies of the object for > each user-agent request that > it sees. However, most caches ignore this command, since few > authors do this anymnore > (they learned the hard way). In general, it is best to > detect css support in > javascript, or design pages that work with or wothou CSS > support. In other instances, > if you must do a detection, get the results and then issue a > redirect to the correct > page (make sure it is a temporary redirect, not a permanent > one, since the permanent > redirect is considered a cachable object in most caches). > ------------------ SNIP ---------------------

2 1

Problem accessing Alias'd columns from SQL query...
by Robert Geiger 02 Feb '00

02 Feb '00

I have a MySQL connector working fine with several queries. I made another query and it has Alias'd columns. When I try to access the columns to lay out a table using <dtml-var ColumnName> the Alias'd columns raise an error. See below. Thanks for any assistance on this matter. --------ERROR INFO------------- Zope Error Zope has encountered an error while publishing this resource. Error Type: KeyError Error Value: MonthDay Traceback (innermost last): File /pub/Zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /pub/Zope/lib/python/ZPublisher/Publish.py, line 179, in publish File /pub/Zope/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: ElementWithAttributes) File /pub/Zope/lib/python/ZPublisher/Publish.py, line 165, in publish File /pub/Zope/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: Report_Birthday) File /pub/Zope/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: Report_Birthday) File /pub/Zope/lib/python/OFS/DTMLMethod.py, line 145, in __call__ (Object: Report_Birthday) File /pub/Zope/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__ (Object: Report_Birthday) File /pub/Zope/lib/python/DocumentTemplate/DT_In.py, line 691, in renderwob (Object: List_Phone) File /pub/Zope/lib/python/DocumentTemplate/DT_Var.py, line 276, in render (Object: MonthDay) KeyError: (see above)

1 0

Re: [Zope] Database/E-Mail
by Tres Seaver 02 Feb '00

02 Feb '00

"Dugas, Rheal" <Rheal.Dugas(a)CAN.XEROX.com> wrote: > > I have a question/request which I need help with as I havn't a Clue on how > to approch or set this up. > > I have a mySQL support type database setup. What I want to do is have an > e-mail address where any support related items will be entered into the > database automactily. > > Where I send an email to rthe server, the server looks at the e-mail > contents, adds a new record to the database, with the subject, message, and > any files attached. > > Can this be done easily and if so could someone give me a hand with the code > or setup. You can write a Python script which uses ZClient to call a "manage_upload" method (or whatever you call the method which stuffs the email into Zope), and then invoke that script from procmail or whatever your MDA is. You may even be able to run the client directly as a script, e.g.:: $ZOPE_HOME/bin/python $ZOPE_HOME/lib/python/ZPublisher/Client.py \ -u someuser:herpassword http://myserver/loadMail \ message:file=/tmp/msgFile.txt (all on one line, removing the backslashes). The How-To at http://www.zope.org/Members/lstaffor/ZClientMethod covers using ZClient from within Zope (to make one Zope instance a client of another). -- ========================================================= Tres Seaver tseaver(a)palladion.com 713-523-6582 Palladion Software http://www.palladion.com

1 0

rc script
by Tom Deprez 02 Feb '00

02 Feb '00

ha, Now I feel myself really tiny! ugh, clearly I'm a newbie in Linux. Thanks Pavlos, I really learned something today! Regards, Tom. >Tom - > >the z2.py start up script will automatically set the UID to nobody if >start as root. So you do not need to explicitly set it. Another issue is >that you do not need to use daemon to start the process because the z2.py >script takes care of that too > >If your start script includes the option -Z (but *not* the -D option) >then: > >/usr/local/zope/start > >should be sufficient. It will actually make Zope a deamon process and >supervise it too. >Pavlos

1 0

ZClass Hierarchies
by Robert W. Erb 02 Feb '00

02 Feb '00

<pre> I want to create the following classes: Human Unregistered Human (base class Human) Registered Human (base class Human) Customer (base class Registered Human) Employee (base class Registered Human) Manager (base class Employee) Following the ZClasses tutorial, I make a new product, PeopleProduct. Inside PeopleProduct, I create a ZClass for Human. It seems like my Human ZClass is available as a base class only inside PeopleProduct, so I add a ZClass for Unregistered_Human there, based on Human. Following this pattern, I end up with six new ZClasses all defined in PeopleProduct. Is this the way to do it? It appears suspiciously messy to me. BTW - Thanks to DC for a cool thing and this list for the help it's been to a frustrated struggling newbie. - Bob </pre>

2 1

RE: [Zope] Newbie, trying to follow the installation HOWTO...
by Chris McDonough 02 Feb '00

02 Feb '00

That should read "has an improper mode bit setting". Drugs. They'll get you every time. Chris McDonough mailto:chrism@digicool.com Digital Creations http://www.digicool.com Publishers of Zope http://www.zope.org > -----Original Message----- > From: Chris McDonough [mailto:chrism@digicool.com] > Sent: Wednesday, February 02, 2000 4:29 PM > To: 'addyd(a)unk.edu'; zope(a)zope.org > Subject: RE: [Zope] Newbie, trying to follow the installation HOWTO... > > > If you don't have permission to ungzip the file, probably has an mode > bit setting or is owned by a different user. > > su to root > chmod 777 Yourfile.tgz > exit > gunzip Yourfile.tgz > > That should do it. > > Chris McDonough mailto:chrism@digicool.com > Digital Creations http://www.digicool.com > Publishers of Zope http://www.zope.org > > > -----Original Message----- > > From: addyd(a)unk.edu [mailto:addyd@unk.edu] > > Sent: Wednesday, February 02, 2000 3:55 PM > > To: zope(a)zope.org > > Subject: [Zope] Newbie, trying to follow the installation HOWTO... > > > > > > As a linux newbie, I like the ease with which I can install > and delete > > packages with Redhat Package Manager (on a machine for which > > I have root > > privilege). The installation/Upgrade HOWTO is (explicitly) > not for RPM > > installation. The HOWTO discusses some security features that > > I would like > > to impliment (like "installing as a User", "starting as > > Root", and "running > > as Nobody"). I'd like to follow those suggestions, but have > to use the > > Zope-2.1.2.ppc.rpm that I created from a src.rpm . > > > > Problem is... you must install and delete RPMs as root, so I > > can't take the > > good security advise above. So, I've decided to try dumping > > the rpms and > > installing from src (no LinuxPPC binary that I can find). If > > anyone has a > > suggestion for using the rpm and achieving the goals of the > > HOWTO, I'm open > > to suggestions. > > > > Trying to follow the suggestions in the HOWTO, I have > > followed them to the > > letter (installing as a user) but have Permission Denied when > > I even try to > > gunzip the .tgz source file. Assuming I have a permission > > problem here. I > > have the directories set up exactly as shown in the HOWTO: > > owner group > > nobody myusername > > > > I have done an su to my username from root before attempting > > the gunzip. > > Does "nobody" have to belong to group "myusername"? I looked > > at /etc/group > > with vigr, but nowhere can I find a file telling me what > the lines in > > /etc/group mean (how to edit them). At this point, I don't > > even know if it > > is necessary. > > > > I know this has to be kindergarten stuff here, but I've never > > worked with > > anything where the owner was different from the group (though > > after reading > > the HOWTO I can see how it would be useful). If anyone can > > remember what it > > was like to be this ignorant... please take pity on me. :>) > > > > Darren Addy > > University of Nebraska at Kearney > > > > > > _______________________________________________ > > Zope maillist - Zope(a)zope.org > > http://lists.zope.org/mailman/listinfo/zope > > ** No cross posts or HTML encoding! ** > > (Related lists - > > http://lists.zope.org/mailman/listinfo/zope-announce > > http://lists.zope.org/mailman/listinfo/zope-dev ) > > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://lists.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) >

1 0