March 2000 - Zope - Zope lists

Re: [Zope] VNU Net: Python 3000 not backwards compatible, warns creator
by Anthony Baxter 30 Mar '00

30 Mar '00

>>> Daryl Tester wrote > > Python 3000 will not be backwards compatible. > People are making a bigger deal out of this than it needs to be. > I admire Guido for taking a stance and fixing the problems he > perceives in his language; I've had to support "backwards > compatability" issues in a commercial interpretive language > before, and "It Sucks(TM)". One thing that is kinda amusing (to me, at least) - the fuss I'm seeing about this is, in a way, a testament to just _how_ _good_ a job Guido's done as Benevolent Dictator. I've been using python since v 0.9.mumble, and there's been _very_ _very_ few times where I've had to go back and change working code because of a python upgrade. And that's not just the python scripts, I'm also talking about C extensions. Thinking back to a previous place of work where we had perl software of around 10-12K lines of code, it seemed like every bloody minor rev of perl5 would break something in it. P3K has been talked about for a long long time as the "chance to fix stuff" (ok, it used to be known as Python 2.0, but...). I, for one, am looking forward to it. (particularly if the types/classes split goes away). Anthony

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ODBC and MS SQLServer Problems
by Guy Davis 30 Mar '00

30 Mar '00

I am trying to get Zope to play nice with MS SQL Server. They are both installed on the same Compaq Proliant server. I can create my database, make it accessible through ODBC and then add a ODBC Connection in Zope by picking my ODBC connection from the list. I can then use the connection just fine for SELECTs and UPDATEs for a little while (30 mins to an hour). However, eventually I get the following error: Error Type: sql.error Error Value: ('S0002', 208, "[Microsoft][ODBC SQL Server Driver][SQL Server]Invalid object name 'users'.") where 'users' is a table name. Up until this point, it was accessing 'users' just fine, and I can still run queries on it from the SQL Query Analyzer app so I know the table is there. My only option at this time seems to be to delete the whole database and create it again and recreate the tables. This isn't acceptable if this system is to actually be used. Can anyone who has gotten SQL Server and Zope working post explicit instructions. Or better yet, let me know what is causing the above error. Thanks. -- Guy Davis http://www.ualberta.ca/~davis/

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How do I download the results of a large Query
by Baker, Dennis (sjmr) 30 Mar '00

30 Mar '00

I would like to set up a link to some SQL query results in comma delimited ascii that will download the data rather than display it. I am having two problems. First the data is coming up in the browser and I want them to download it without having to right click and select download. Second, before the SQL is completed the browser times out. I think if I solve the first problem, the second will be Ok, Any ideas? Dennis Baker Information Systems Manager, St. Joseph's Medical Resources

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zopEDIT problem
by Daniel.Weber＠SEMATECH.Org 30 Mar '00

30 Mar '00

I downloaded zopeEDIT and tried it out, but the performance is terrible - it takes over a minute to download directory contents. When I connect, I see the error: PROBLEM(100) ZServer unhandled connect event After a minute or two, the directory listing shows up. Clicking to edit a file acts very quickly, with the following messages: INFO(0) ZServer incoming connection from 127.0.0.1:2313 INFO(0) ZServer Successful login [The above the first time on a directory only...] [followed by] PROBLEM(100) ZServer unhandled connect event Any ideas? This is with zopeEDIT 0.0.5 and zope 2.1.4

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bobobase_mod_time of other objects
by dillera＠isc.upenn.edu 30 Mar '00

30 Mar '00

Hello- if I want to use bobobase_modification_time to tell me when another object has been updated, how would I format it? For instance, in a index_html DTML document I want to list the last update of other objects in the same folder (other DTML documents and methods). I can't get bobobase to reference _other_ objects. Is this possible? -andy

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RE: [Zope] Upgraded to 2.1.6, now all pages return an unauthorize d error!
by Brian Lloyd 30 Mar '00

30 Mar '00

> > Are you using the built-in UserFolders that come with Zope or > > a third party authentication source (or running in 'remote user > > mode')? If not, is there any part of your code that might be > > trying to change the AUTHENTICATED_USER in the REQUEST at any > > point? > > Nope. :( > Straight Zope with a _few_ added products > > I've since moved back to 2.1.4 and it works fine there. Will > be setting > up a special server to duplicate it this week(end). Can you tell me what products? I know that if you are using SiteAccess and don't use the most recent release it will break with 2.1.6 in a manner much like you describe... Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Building feedback forms
by Eron Lloyd 30 Mar '00

30 Mar '00

Hello all. I'm just starting my first Zope site, and I'd like to create a feedback form for the site. I have very little "useful" experience with DTML, especially for logic. Once I create the form, how do I write a DTML script to process the input (like linking entries to variables, testing valid answers, raising errors, etc.) ANY help whatsoever would be greatly appreciated, and all the useful stuff I learn I'd like to make a how-to from. Real world solutions like this in Zope are few as far as documentation go.... thanks in advance, Eron

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Welcome Aboard Shane Hathaway!!
by Rob Page 30 Mar '00

30 Mar '00

Hello everybody! Please join me in welcoming Shane Hathaway to the Digital Creations team!! >From Shane's man page: """ I come from a small but growing town called Magna, Utah. I always considered it an underrated city in the Salt Lake Valley. I enjoyed my friends and neighbors there and some of them keep in touch even now. I have been programming since I was eight years old. I enjoyed the Commodore 64 so much that television I still use is actually a Commodore monitor. I had to learn to program early because my parents refused to buy any software--if I wanted software, they said, I'd have to write it myself. So I did! I enjoy singing. I have sung in many choirs over the years including the Cyprus High madrigals. I have sung enough solos for various functions that it's now easier for me to sing a solo than to give a speech in public. If you ever want to butter me up for something, give me a genuine Brazilian feijoada. Include every part of the pig but avoid the hairy stuff. Having spent two years there, I hold Brazil close to my heart. Not long ago I wrote Web Academics (http://www.webacademics.com) software for delivering courses over the web. It was designed to handle specific needs requested by educators as well as the needs I was aware of as a student. I am working on porting the education-related components of Web Academics to Zope. Zope and Digital Creations are very interesting to me because the product is built on solid foundations and the company is built on a solid philosophy. I am excited to begin working with the team. """ Shane can be reached at: mailto:shane@digicool.com Welcome Shane! --Rob -- Rob Page V: 540.371.6909 Digital Creations, Inc. F: 703.995.0412 -- ... The Leader in Open Source Web Development ... ... Don't miss Zope! http://www.zope.org ...

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Re: [Zope] Zope and memory usage
by Andrew Lahser 30 Mar '00

30 Mar '00

Tres Seaver <tseaver(a)palladion.com> said: > Tony McDonald <tony.mcdonald(a)ncl.ac.uk> > > > I just ./stop and ./start'ed two Zope servers that were taking up > > rather a lot of memory; > > > > PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND > > 841 nnle 12 33 0 395M 318M sleep 177:24 0.00% python > > 834 nnle 9 23 0 531M 14M sleep 101:20 0.00% python > > > > Is there any way of telling what objects are taking up this memory - > > could it be a memory leak in Zope at all? I'm using src-2.1.3 on > > Solaris because I still use the /REQUEST hint to see what my > > variables are. > > Replying only to the last sentence: Add a DTMLMethod in the root of your Zope > (call it maybe "debug_request"), with the following body: > > <dtml-var standard_html_header> > <dtml-var REQUEST> > <dtml-var standard_html_footer> > > This works fine on 2.1.4+ -- they only suppress the "direct traversal" of > REQUEST. Additionally, I would suggest removing the "Acquire Permissions Settings" from the "View" permission, and making the "View" permission only available to managers. This is easy to do, assuming you called the DTMLMethod above "debug_request" and created it in your Zope Site Root, then you could: 1. Navigate to http://mysite.com:8080/debug_request/manage_access 2. Scroll to the bottom of that long page. 3. Uncheck "Acquire Permissions Settings" next to the "View" Permission/ 4. The "Manager" box should already be check, verify this. 5. Click the "Change" button near the bottom of the permission list. Forgive me if I over-explain. Drew

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Mysterious Netscape Upload failure
by Tres Seaver 30 Mar '00

30 Mar '00

After banging my head on it for a couple of days, I just resolved a really ugly problem for any Zopista who uses Netscape: any form which contains a file upload button was timing out, failing to send data to Zope (e.g., I couldn't create DTMLMethods!). The underlying cause of this was Netscape's poor tempfile hygeine: their file upload control handler was creating tempfiles, which it then never bothered to clean up. Eventually, it exhausted the tempfile namespace, at which point it looped pointlessly trying to create a tempfile with an unused name. I tried several reinstalls, tweaked preferences, all to no avail. The solution was to scrub the temp dir of all the ns*.tmp files -- everything is hunky-dory, now. Looking-for-the-voodoo-doll'ly, Tres. -- ========================================================= Tres Seaver tseaver(a)digicool.com tseaver(a)palladion.com

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