September 1999 - Zope

RE: [Zope] increment variable
by Terrel Shumway 30 Sep '99

30 Sep '99

This will append a '1' to PresetCookie (a string). I don't know yet how to convert the string to a number. <dtml-if PresetCookie> <dtml-call "RESPONSE.setCookie('PresetCookie', PresetCookie +'1')"> <dtml-var PresetCookie> <dtml-else> <dtml-call "RESPONSE.setCookie('PresetCookie', 1)"> </dtml-if> <a href="cookietest">again</a> -----Original Message----- From: Mike Mikkelsen [mailto:mikk@microbsys.com] Sent: Wednesday, September 29, 1999 2:29 PM To: zope(a)zope.org Subject: [Zope] increment variable Hello again, I think I've seen this subject on the list before but I'm having a hard time wording it right so as to find it in the archives. Is there a way, without PythonMethod & External Python Methods, to increment a variable (possibly a cookie value)? Something like this: <dtml-var "_['PresetCookie']=_['PresetCookie']+1"> or <dtml-var "_['PresetCookie']=_['PresetCookie']+_['product_cost']">

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2.01 will not run on NT4
by Michael Simcich 30 Sep '99

30 Sep '99

Hi all - Followed the install info for the lastest Zope release on NT. I ran start.bat. However browsing to http://localhost:8080/manage gets me a "page not found" message. Here is what start.bat got me: >>>>>>>>>>>>>> C:\ZopeSite>"C:\ZopeSite\bin\python.exe" "C:\ZopeSite\z2.py" -D ------ 1999-09-30T14:12:37 PROBLEM(100) ZServer Computing default hostname ------ 1999-09-30T14:12:37 INFO(0) ZServer Medusa (V1.10) started at Thu Sep 30 07:12:37 1999 Hostname: c147070-a.pinol1.sfba.home.com Port:8080 ------ 1999-09-30T14:12:37 INFO(0) ZServer FTP server started at Thu Sep 30 07:12:37 1999 Authorizer:None Hostname: gemini Port: 8021 ------ 1999-09-30T14:12:37 INFO(0) ZServer Monitor Server (V1.5) started on port 8099 >>>>>>>>>>>>>> The installed faq has the following: >>>>>>>>>>>> 1. After installing Zope, I go to the URL in my web browser but I get a "404 Not Found" or "Server Error" message This message is coming from your web server, not Zope. It usually means that your web server is misconfigured. Ensure that the PCGI info file generated by the installation procedure exists in a cgi-enabled directory, and that your web server has any required aliases or configuration options set to enable it to find this file and run it as a cgi program. Look in the error log for your web server for details of the error. >>>>>>>>>>>> This would seem to contradict this from the install.txt: >>>>>>>>>>>> 5. Select Destination Directory where you want the software installed. This should *NOT* be a directory that is published by any existing web server software. >>>>>>>>>>>> I've installed zope right off of C: and didn't attempt to relate it to or inform PWS of it. This is NT4ws sp4, with a cable modem. Michael Simcich AccessTools

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RE: [Zope] ZCatalog searching questions
by Dave Kimmel 30 Sep '99

30 Sep '99

> Some people thing, 'why not use re (the Python regex > module)?', because > searching like '*ing' would require iterating over all the keys, a > linear search like this could take multiple order of maginitude more > time than a non-regex search. I understand this having worked with various relational and not quite so relational databases in the past - however, even on a 355,000 record file UniVerse can perform a search using its strange regular expression like system in ~20 seconds (this being without the benefit of indexes, when searching on an indexed field the same search is done in about 2 seconds). I suspect that even if it has to iterate through every key, there won't be any performance problems. Also, this brings up another point... Can the basic search interface on the Folder object itself do regex searches on the content? Can it be hacked to do so? Speed isn't a concern at the moment since the dataset will be quite small, and the machine its on has plenty of power to spare. > There is a pretty good compromise solution called n-grams, > but they also > result in a lexicon increase, and a much more complicated > algorithm. I > can refer you to a good book that describes them. For how little they're paying me, I think I'll pass on this one ;-) > Yes. The 'lexicon' has a hardwired 'synonym and stopword' > dictionary in > lib/python/SearchIndex/Lexicon.py. This is also projected to be > improved by allowing through-the-web lexicon managment (like > specifying > stopwords and synonmys). Someone also suggested interfacing > it to some > kind of synonym database, you'd have to search through the arvhives to > find the reference. Cool! I was thinking of doing this myself, but if I just have to edit a single file it shouldn't be all that bad! > > Am I asking too much of this? Should I be buying a Python > book and adding > > this functionality myself? Should I be using something > other than ZCatalog? > > Should I be using something other than Zope? (Please say > no, I happen to > > like Zope!) > > Go for it, but don't give up on ZCatalog or Zope, I'd be surprised if > you found fully featured regex searching in another package that would > take less of a headache to use than just implimenting a simple > 'reversed' lexicon that let's you do globbing (like dos > wildcard, no *s > in the middle of words, etc.). I'm thinking of using a different search product since I don't know python at all, and I'm not sure if I want to start out by adding features to such a large and well thought out product. Are there any other search products for Zope available? As disgusting as the thought is, perhaps I should be looking into using a relational database for this (just for the improved searching - I'd rather use a pure Zope solution)? Does anyone have any suggestions for storing hierarchical data in a relational database? And while on the subject of databases... Does Zope/Python have any way of interfacing with a MultiValue database such as UniVerse (prefered since we already use UV here), jBase, UniData, D3, etc? Thanks! -- Dave Kimmel Systems Analyst Office of the Public Trustee, Alberta Justice

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Zope article in the Hungarian Chip Magazine
by Arpad Kiss 30 Sep '99

30 Sep '99

Hi all, In the September issue of the Hungarian Chip Magazine there is a Zope article written by me(this is the second part of my tree part series) Arpad Kiss sekter(a)mail.matav.hu http://starship.python.net/crew/arpadk

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RE: [Zope] Any alternative to &arg in URL?
by Jeffrey Shell 30 Sep '99

30 Sep '99

> You can replace the '&' where it occurs in the arguments with %26 > and it will be turned back into '&' when the url is processed. I think doing this is similar to doing < > in HTML. It's a way of passing in the ampersand character to a CGI argument without it being interpreted as a parameter-breaker. If you make a form with a couple of fields with a GET method, and enter in strings like "this & that" and "97% off" and watch the URL in the browser, you'll see the & in "this & that" get turned into the %26. (I think :) I think the real thing to do is to use & in URLs. I know that some older versions of Netscape Navigator had problems with this though (I can't remember if they had problems if you used & in URLs or just the & on its own. I only remember shaking my head in grief).

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How to test/debug a Product in stand alone?
by Chui.Tey＠env.qld.gov.au 30 Sep '99

30 Sep '99

Went through the tutorial where a poll product was created, and I thought I understood it. But no.... Applying "monkey see, monkey do" to my own python stuff to transform it into a product, I somehow introduced bugs into previously working code. What do I run to debug a product module? There is a gap in the tutorial between explaining how we can check our original python code but little about debugging a product. Running ZPublisher/test on the product no longer works because the test routine says that it couldn't import Persistent. I tried ZPublisher/test the poll product and got the same error message. Obviously when Zope pulls itself up it is changing its search path somehow. I added sys.path.insert(0,'myzopepath/lib/python/ZODB') and some of the error messages went away but not the 'cannot import name Persistent' was rather stubborn and refuses to go away. Has anyone sorted this one out before?

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Help: Where can I find Zope 2.0.1 on AIX 4.3
by Vincent BORGHI 30 Sep '99

30 Sep '99

Hello, Is there somewhere an already-compiled version of Zope 2.0.1 for AIX 4.3? Or, if the answer for the question above is no, how to compile 2.0.1 on AIX 4.3 (I tried but had errors)? Thanks -- ========================================== =========================== Vincent BORGHI | Bull Mailto:Vincent.Borghi@bull.net | Unix Servers Phone (France): 04 76 29 72 80 | http://www-frec.bull.fr Phone (International): +33 4 76 29 72 80 | Echirolles, FRANCE ========================================== ===========================

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Trimming listadmin trailers from quoted text
by Tres Seaver 30 Sep '99

30 Sep '99

Multiply-quoted copies of the list admin info are line noise; like HTML-encoding, I tend to skip such messages rather than wade through the muck. Two solutions: * Authors trim the quoted versions manually (which they should anyway). * Mailman applies some magic to rip them out. -- ================================================================================ Tres Seaver tseaver(a)palladion.com http://www.palladion.com Palladion Software Houston, Texas, USA 713-523-6582

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RE: [Zope] how to access files outside the database
by Rob Page 30 Sep '99

30 Sep '99

Hi Philipp: > How can I access files that do not lie inside the Zope database. I need that > feature because I have to write an image database where the images are stored > in a common directory and only the filenames are stored in the RDBMS. If I > address an image wit the <IMG...> tag zope searches in its internal object > hierarchy. > >Is there any possibility? I think so. We've had similar situations very recently. How about: <dtml-in sqlGetImageName> <img src="http://www.server.com/images/<dtml-var image_name>"> </dtml-in> where sqlGetImageName returns (possibly among other things) image_name --Rob P.S. - If it's all the same, please avoid sending HTML email to the list. It makes replying in a sane way difficult.

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Re: [Zope] Any alternative to &arg in URL?
by Tres Seaver 30 Sep '99

30 Sep '99

John Hermes wrote: >I am working on a site using both POST and GET >forms and I use URL args frequently in the target: > >action="subfolder/index_html?arg1=spam&arg2=eggs&..." > >Using the '&' character in URLs is not legal HTML >(4.0-strict). Does Zope recognize other arg >separators besides '&'? I don't want to give up >the way Zope parses and places the args into the >namespace for me. > >Any thoughts would be much appreciated! > >John Hermes jhermes(a)infoglobe.com W3.org's HTML 4 spec () sez: -------------------------------------------------------------------------------- B.2.2 Ampersands in URI attribute values The URI that is constructed when a form is submitted may be used as an anchor-style link (e.g., the href attribute for the A element). Unfortunately, the use of the "&" character to separate form fields interacts with its use in SGML attribute values to delimit character entity references. For example, to use the URI "http://host/?x=1&y=2" as a linking URI, it must be written <A href="http://host/?x=1&y=2"> or <A href="http://host/?x=1&y=2">. We recommend that HTTP server implementors, and in particular, CGI implementors support the use of ";" in place of "&" to save authors the trouble of escaping "&" characters in this manner. -------------------------------------------------------------------------------- I don't see a problem with continuing to use the ampersand in URL's which are constructed on the fly to be used in a GET request. The only problem lies in trying to embed them within an HTML document; not a common use case. -- ================================================================================ Tres Seaver tseaver(a)palladion.com http://www.palladion.com Palladion Software Houston, Texas, USA 713-523-6582

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