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RE: [Zope] 2.2b3 hangs a lot
by Brian Lloyd 07 Jul '00

07 Jul '00

> been running 2.2.0b3 for a few days now. > config > redhat6.1 > postgres > ZPygreSql > kmnetnews > > after some time, zope just hangs. when i do top, there's no > processor usage at > all on all python processes. after a few minutes, zopes wake > up and continue > to serve. the cycle continues after some time. the hangup > is very sporadic. > <snip> If you look at the server logs when it hangs, do you see any pattern as to what was requested when this happens? I haven't been hearing of any hanging issues with the 2.2 betas, which makes me suspect that something specific to this site may be in play here. The fact that it comes back to life on its own after a while makes me think that this is either a very strange system issue or tied up with something that has a timeout (for ex. is it possible that a query is trying to run, timing out against the postgres database?) If the PygresSql DA is not fully thread-safe then I could imagine this as a possiblity. Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Re: [Zope] Is Zope slow?
by Firestar 07 Jul '00

07 Jul '00

Hi, thanks for your comment. >Absolutely. Apache is many times faster than Zope. (Don't know >much about AOLserver, but anything with AOL..... :) >However, Apache can't do squat compared with Zope when it comes >to dynamic content. Not true. I have been programming using PHP and PERL, and together with Apache(DSO) they are quite fast. They do offer sessions tracking, authentication, database API + other features. It's just that due to the increasing 'hype':) on Zope and the vast array of features that it seems to offer, i'm sort of "attracted" by it:) Of course if i have time, i will play ard with it and see how good it is. Problem is that time is not really on my side and i need to decide on my next development tool fast(i have yet to try out other stuff e.g. ASP, JSP, Servlet..) I heard that the learning curve for Zope is quite steep, plus the documentation is not(?) that comprehensive, compared to e.g. PHP. What are your comments though? i may be wrong here... regards, firestar ______________________________________________ FREE Personalized Email at Mail.com Sign up at http://www.mail.com/?sr=signup

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Unable to upload images from client to server
by Kelvin Cheong 07 Jul '00

07 Jul '00

Hello All! I have this problem with "UPLOADING". In my HTML form (DTML-embedded-Document) I have data and images to insert into a mySQL DATABASE. Therefore I'm calling SQL statements from my DTML METHOD. However, it seems the SQL insert command does not allow LOAD_FILE procedure as does the SQL update command e.g.: UPDATE table_name SET blob_column=LOAD_FILE('full_path_of_file') WHERE table_column='table_column value' So I had to resort to using TWO separate SQL methods : 1) to insert the "data" alone into the database first, from the form; 2) then another to insert the image of the same form using the SQL "update" command, verified my the data record's unique id. All this works fine but this method does not work with the <...ENCTYPE="multipart/form-data"...> value at the html form header. Instead it only works with <...ENCTYPE="application/w-xxx-form-urlencoded"...>. If I use "multipart/form-data" it will enter the string of the command LOAD_FILE('...file...') instead of the actual image contents. Why is this? This is only one small part which I'm puzzled about as this method would only allow images on the server's harddisk to be uploaded. The main concern is UPLOADING from the client. Having mentioned so, the next problem I'm facing is uploading the file onto the Zope Server from the client. Having searched on the net, it appears that I will have to use CGI's on my server side to temporarily grab the files contents and place it somewhere. Is there anyway to use DTML without the involvement of external CGI's? Also, it seems that if I had to do this on Zope, it will require me to use Python. Which of course sounds hard. Then the questions arise regarding CGI's (IF IT REALLY IS REQUIRED): 1) How on earth do I do this?; 2) What if there were multiple users uploading files at the same time, then what happens to the single temporary file which stores the uploaded files' contents. 3) If I were to use a /cgi-bin/... how will that relate to where ZOPE is installed, in other words, would the directory structures get confusing? I'm not a hopeless programmer but neither am I close to even "quite good". Learning won't be a problem, but I'll need the answers quick, as I do not have the time in my hands. Can anyone please help me out? I've looked in discussion forums and the DTML reference, as I have said I'm practically a beginner programmer, and was unable to understand even half of what had been posted. VCN - The Leader In Corporate Communication Solutions Visit our website at http://www.vcn.com.my. or http://www.vcnlinux.com

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Re: [Zope] RE:How do I merge form & URL vars into sql easily
by Michael Blewett 07 Jul '00

07 Jul '00

At 20:39 6/07/2000 -0400, R. David Murray wrote: ><snip> >Once you generate an output page, the user views it, and then clicks >again, you have a brand new REQUEST object that can only get values >from the *new* web page. Others have been tripped by this, expecting >the REQUEST fields to automatically carry over from one form to >the next. They don't, unless you explicitly put hidden fields into >your form to store the variables values for the next REQUEST. >But as long as you are still server side and making DTML calls, >REQUEST is there. Maybe I should have mentioned that my bucket gets emptied after each new page is requested...just to keep the analogy going... Thanks for clarifying that - always happy to be corrected, especially if it makes things clearer. - Michael ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Michael Blewett Computer Support Mgr - Biological Sciences Monash University (Clayton Campus) Victoria Australia 3168 " Can I trade this job for what's behind door #2? "

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RE:How do I merge form & URL vars into sql easily
by Michael Blewett 07 Jul '00

07 Jul '00

Hi Jake, I originally had trouble coming to grips with the concept of variables and forms and passing them from one object to the next. After much testing, trial and error (and guidance from this list), I came up with these conclusions (which I'm sure someone will shoot down if I am wrong): 1) The request object you are setting with your REQUEST.set command is like a big bucket that gets passed between one web page and the next when you call it in your DTML. The best thing someone ever showed me was how to view in the called document ie. insert the line: <dtml-var REQUEST> into the dtml/method you are trying to call. If you do that you can see all of the variables that get passed normally as part of your REQUEST variable, as well as any that get added to it by your form in the act of your POST command in the form. Be prepared - it is a long list! You should be able to see all your form variables in there. If you don't then you haven't been doing your form correctly (been there done that too!). The only real 'nasty' I have come across so far id the checkbox - if it is unchecked it doesn't post anything to the REQUEST object, and then you need to check for it and set it, if you are using it to update an SQL database (this is the only time I use the <dtml-call "REQUEST.set['argument','value']">command. This is normal behaviour with forms and is not the fault of Zope. Hope this helps... - Michael > -----Original Message----- > From: zope-admin(a)zope.org [mailto:zope-admin@zope.org]On Behalf Of > asjf11(a)uaa.alaska.edu > Sent: Wednesday, July 05, 2000 5:32 PM > To: zope(a)zope.org > Subject: [Zope] How do I merge form & URL vars into sql easily > > > I am a new user to Zope and I'm trying to pass data that has been > entered into a form (either through GET or POST) into another > object. This object calls a z sql method to insert the form data into > the database. So far, the only way I've found to pass data to the > sql is to define arguments for it and then, in the dtml-document (or > method) use: > <dtml-call "REQUEST.set['argument','value']"> > (and it took me long enough to figure THAT out, let me tell you) > The problem is that sucks when there are 30 form varibles that > need to be inserted into the database. > I would think that there is some way to let the sql method see > these varibles that are defined within my document. Or loop > through all URL or form varibles defined and sets all the vars in > request. Something to keep from having to write the above dtml 30 > times. Thanks. > > Jake Feasel > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Michael Blewett Computer Support Mgr - Biological Sciences Monash University (Clayton Campus) Victoria Australia 3168 " Can I trade this job for what's behind door #2? "

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Re: [Zope] Is Zope slow?
by Firestar 06 Jul '00

06 Jul '00

------Original Message------ From: Marco Mariani <m.mariani(a)imola.nettuno.it> To: Firestar <theebh(a)mail.com> Sent: July 6, 2000 7:05:49 AM GMT Subject: Re: [Zope] Is Zope slow? >Apache and AOLserver with what? What would you program these >with? Well, for Apache there's PHP or mod_perl, which do offer sessions, authentication(via externally-written modules), database API, and quite fast too. Of course they do not have most of the 'unique' object-oriented features of Zope (as listed on Zope website), and don't have the "manage-everything-thru-the-browser" feature (but projects like midgard may be catching up?) >Of course Zope is slow. But apache doesn't have a tenth of the >functionality of Zope (on my system, ZServer is 1/20th of the >total Zope code) Well, i do appreciate the 'extra' features that Zope provides, but speed is still a matter of concern here. Imagine showing my boss "what my website can do" and all those advanced features, but it crawls like a snail... Anyway, thanks for your reply. I will certainly pick up 'Zope':), but just wondering whether it will replace what i have been using, i.e. PHP. regards, firestar ______________________________________________ FREE Personalized Email at Mail.com Sign up at http://www.mail.com/?sr=signup

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Re: [Zope] the "manage_" methods
by Dieter Maurer 06 Jul '00

06 Jul '00

Fabio Akita writes: > I am trying to realize how the manage_ DTML methods works. The only > documentation that I found was a quick reference that just say that the > methods exist with simple descriptions as: > > manage_addDTMLMethod(id, [title, file, REQUEST, submit]) The name is well chosen. The method adds a DTML Method to its folder (it is a folder method) and gives it "id", "title". The content is taken from "file". The REQUEST probably is used only for a "redirect" after the operation. > But there is no details about how this works, what´s required. Is there any > documentation about them? I am trying to do a webpage that can change the > content of properties of a folder. Maybe, you find something in the InterfaceWiki or in the new 2.2 help system. If you do not find anything, you can look at the source. Zope code is quite readable (mostly). Dieter

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Re: [Zope] Error tracing...
by Dieter Maurer 06 Jul '00

06 Jul '00

Peter Arvidsson writes: > How do I trace errors in Zope? I get the following error message: > "Empty entry when integer expected " > It gives a hint of the problem but I cant see what value is empty.. how > do I control the values? Is there some way to write out variables or do > I just have to guess??? The traceback tells you, where the error was detected, as oneone else already pointed out. In your case, it seems that the problem was either detected by ZPublisher or by Z SQL Method. They have encountered a parameter/form name with an ":int" suffix. This tells them to convert the value into an integer. However, in your case, the value was empty. Your error, "Empty (form) entry, when integer expected". Dieter

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PoPy-1.2.tar.gz file is missing...
by Eric L. Walstad 06 Jul '00

06 Jul '00

The PoPy-1.2.tar.gz file doesn't seem to be available from the ftp.mixadlive.com site. Would anyone out there mind emailing me the file? Thanks, Eric.

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Nested dtml-in loops (was: [Zope-dev] SQL-Output)
by Dieter Maurer 06 Jul '00

06 Jul '00

Andre Schubert writes: > ... problem with names clashes from nested dtml-in loop ... Your problem may be generalized: <-- l1 and l2 are sequences --> <dtml-in l1> <dtml-in l2> <-- here you need to access both components from both the inner and the outer dtml-in There may be a name clash between the two (implicite) loop variables --> </dtml-in l2> </dtml-in l1> You can use renaming to avoid any clashed. I demonstrate it for "sequence-item". <dtml-in l1> <dtml-let outer_lv=sequence-item <-- ATTENTION: calls it! --> > <dtml-in l2> ... <dtml-var outer_lv> <-- the outer loop value --> <dtml-var sequence-item> <-- the inner loop value --> ... </dtml-in l2> </dtml-let> </dtml-in l1> If you want to prevent the outer loop value to be called, you may use "_.getitem('sequence-item')" rathen than just sequence-item. Dieter

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