April 2003 - Zope - Zope lists

Re: [Zope] Newbie - passing a list to an External Method
by Ashley Lloyd 23 Apr '03

23 Apr '03

Chris, Thanks for your email, much appreciated. I've tried as you suggested, and again I can retrieve the values from within the External Method (if I just return fileID or lines, without actually trying to do anything with them, it works fine), but if I attempt to get at the strings inside the lines variable, it fails. If I am correct, the error I seem to get (removing the try..except from the script, this is the error shown in the dtml-method) is: ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Error Type AttributeError Error Value __getitem__ Traceback (most recent call last): File "C:\PROGRA~1\ZopeSite\lib\python\DocumentTemplate\DT_Try.py", line 149, in render_try_except result = render_blocks(self.section, md) File "C:\PROGRA~1\ZopeSite\lib\python\DocumentTemplate\DT_Let.py", line 75, in render else: d[name]=expr(md) File "C:\PROGRA~1\ZopeSite\lib\python\DocumentTemplate\DT_Util.py", line 159, in eval return eval(code, d) File "", line 2, in f File "C:\PROGRA~1\ZopeSite\lib\python\Products\ExternalMethod\ExternalMethod.py", line 205, in __call__ return apply(f,(self.aq_parent.this(),)+args,kw) File "C:\PROGRA~1\ZopeSite\Extensions\formatted-strings.py", line 29, in run for line in lines: AttributeError: __getitem__ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ The part of run() it seems to refer to: y = 20 for line in lines: sping.stringformat.drawString(canvas, line, 10,y) y = y + 20 Again, if I just return lines, or fileId, just before "for line in lines", it returns fine. Thanks again .. to everyone! Ashley _________________________________________________________________ Express yourself with cool emoticons http://www.msn.co.uk/messenger

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Re: Newbie - passing a list to an External Method
by Josef Meile 23 Apr '03

23 Apr '03

> If I set the External Method parameters to (self, fileID, Lines), and call > it in this manner: > <dtml-let link="sping2(fileID='myPDFfile.pdf',lines=mylines)"> > (sping2 being the ID of the External Method - and the external method > returning the fileID that is passed in as the filename to generate) > I get the following error: > > Error Type TypeError > Error Value run() takes exactly 3 non-keyword arguments (0 given) I think that you're defining your method like this: def sping2(self,fileID,lines): but in your call you're saying that the parameters are optional: <dtml-let link="sping2(fileID='myPDFfile.pdf',lines=mylines)"> which isn't true. if they are not optional, then you have to call the method like this: <dtml-let link="sping2(fileID,lines)"> Otherwise, you have to define your method on this way: def sping2(self,fileID='my default',lines=['']) Regards, Josef

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Re: [Zope] Newbie - passing a list to an External Method
by Ashley Lloyd 23 Apr '03

23 Apr '03

Thanks again for your help Dylan. If I set the External Method parameters to (self, fileID, Lines), and call it in this manner: <dtml-let link="sping2(fileID='myPDFfile.pdf',lines=mylines)"> (sping2 being the ID of the External Method - and the external method returning the fileID that is passed in as the filename to generate) I get the following error: Error Type TypeError Error Value run() takes exactly 3 non-keyword arguments (0 given) Error Trace Traceback (most recent call last): File "C:\PROGRA~1\ZopeSite\lib\python\DocumentTemplate\DT_Try.py", line 149, in render_try_except result = render_blocks(self.section, md) File "C:\PROGRA~1\ZopeSite\lib\python\DocumentTemplate\DT_Let.py", line 75, in render else: d[name]=expr(md) File "C:\PROGRA~1\ZopeSite\lib\python\DocumentTemplate\DT_Util.py", line 159, in eval return eval(code, d) File "", line 2, in f File "C:\PROGRA~1\ZopeSite\lib\python\Products\ExternalMethod\ExternalMethod.py", line 198, in __call__ try: return apply(f,args,kw) TypeError: run() takes exactly 3 non-keyword arguments (0 given) Thanks again Ashley _________________________________________________________________ Worried what your kids see online? Protect them better with MSN 8 http://join.msn.com/?page=features/parental&pgmarket=en-gb&XAPID=186&DI=1059

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zope2.6.1 debugging
by Bakhtiar A Hamid 23 Apr '03

23 Apr '03

hi previously, i reported that my zope / zeo clients hangs. following the howto by evan, i managed to get these when i attach to the 2nd zope pid -- Loaded symbols for /usr/local/Zope-2.6-cvs/lib/python/Products/PluginIndexes/TextIndex/Splitter/ZopeSplitter/ZopeSplitter.so 0x0806fb42 in Py_GetProgramFullPath () at eval.c:41 41 eval.c: No such file or directory. in eval.c and on another zope instance, i have this Loaded symbols for /usr/local/Zope-2.6-cvs/lib/python/Products/PluginIndexes/TextIndex/Splitter/ZopeSplitter/ZopeSplitter.so 0x4008caa5 in __sigsuspend (set=0xbffff0a0) at ../sysdeps/unix/sysv/linux/sigsuspend.c:45 45 ../sysdeps/unix/sysv/linux/sigsuspend.c: No such file or directory. in ../sysdeps/unix/sysv/linux/sigsuspend.c -- all other symbols loaded ok, but not that particular one. and further, when i looked at the particular thread (gdb) info threads [New Thread 2050 (LWP 22622)] [New Thread 3075 (LWP 22623)] [New Thread 4100 (LWP 22624)] [New Thread 5125 (LWP 22625)] 6 Thread 5125 (LWP 22625) 0x4008caa5 in __sigsuspend (set=0x42d7bc6c) at ../sysdeps/unix/sysv/linux/sigsuspend.c:45 5 Thread 4100 (LWP 22624) 0x4008caa5 in __sigsuspend (set=0x4257ba4c) at ../sysdeps/unix/sysv/linux/sigsuspend.c:45 4 Thread 3075 (LWP 22623) 0x4008caa5 in __sigsuspend (set=0x41d7aefc) at ../sysdeps/unix/sysv/linux/sigsuspend.c:45 3 Thread 2050 (LWP 22622) 0x4008caa5 in __sigsuspend (set=0x4157c15c) at ../sysdeps/unix/sysv/linux/sigsuspend.c:45 2 Thread 2049 (LWP 22595) 0x401439f7 in __poll (fds=0x8b6e61c, nfds=1, timeout=2000) at ../sysdeps/unix/sysv/linux/poll.c:63 1 Thread 1024 (LWP 22594) 0x0806fb42 in Py_GetProgramFullPath () at eval.c:41 and in the many instances i looked, the running thread that seemed to hang zope is the one with Py_GetProgramFullPath() i have no real experience with gdb, and i can never get the traceback as suggested by evan's howto. but this is the data that i got. any help appreciated thanks

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Having problem with accessing zclass property sheets
by Sridevi Vanka 23 Apr '03

23 Apr '03

Hi, I have a zclass with 2 property sheets named public and private, for which I am creating instances through DTML method using the following lines: <dtml-with "manage_addProduct[ 'xxxxx' ]"> <dtml-call "Newcommit.createInObjectManager(REQUEST[ 'id' ], REQUEST )"> I am able to create an instance with the above lines. I would like to view property sheet of that particular instance immediatly so that the users can enter the properties while creating the instance. So I tried the change properties using the following line under the <dtml-with> tag: <dtml-call "propertysheets.public.manage_editProperties(REQUEST)"> But it gives me an error saying Error Type: Attribute error Error Value: Public Here public is the name of the property sheet. For the Zclass I did install a view with name edit and method as propertysheets.public.manage Where am I making a mistake? Thanks for the help, Sridevi Vanka __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - forms, calculators, tips, more http://taxes.yahoo.com/

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Re: AW: [Zope] Newbie question: Log out completely
by Mico Siahaan 23 Apr '03

23 Apr '03

Well, I used a form and cookie based auth already. I used exUserFolder product. I did try using CookieCrumbler, but I had difficulties to log into Zope Management Interface (I have written about this in this list). :) Thanks. -mico- -------Original Message------- From: Germer, Carsten Date: Tuesday, April 22, 2003 6:30:54 PM To: 'Mico Siahaan' Subject: AW: [Zope] Newbie question: Log out completely This has been discussed lengthly on the list :) If you use the standard authentification which gives users the popup window (HTTP-Basic-Auth) then there is hardly any logout possible. The browser caches the usn/pwd for the site and unless closed it will send the uns/pwd again when challenged. You can use the "Cookie Crumbler" product to switch to a form and cookie based auth. Afaik Zopes "logout" will then work. /Gem

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RE: [Zope] Display status updates/preventing timeouts during long operation
by Passin, Tom 22 Apr '03

22 Apr '03

[ Robert McPeak] > > I've got an external method that performs some manipulations > on a CSV file > that the user uploads to my zope site. Processing of each > line of the CSV > file takes up to 1 second (I'm querying some external > systems, among other > things). These user-uploaded files can contain several > thousand lines, and > timeouts are happening before the data processing is completed. > > How can I change the process to report status and prevent > timeouts? The > user is not going to like looking at a blank page for hours > on end...I don't > either, for that matter. :) > You should change the concept of operations of the process. You should not try to keep a connection to the user's browser open for such a length of time. This ties up resources and may prevent the user from using her browser for other things. Also, with only a few requests you could easily bring your server to its knees for lack of threads. You can try to use HTTP methods, or change completely. Here are some possibilities - 1) Have your server email the results to the user when they are ready. 2) Process teh data off-line, and use the 202 (Accepted) HTTP status code, which seems to be designed for this kind of processing. Here is the definition of this status code, from RFC 2616 - "202 Accepted The request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon, as it might be disallowed when processing actually takes place. There is no facility for re-sending a status code from an asynchronous operation such as this. The 202 response is intentionally non-committal. Its purpose is to allow a server to accept a request for some other process (perhaps a batch-oriented process that is only run once per day) without requiring that the user agent's connection to the server persist until the process is completed. The entity returned with this response SHOULD include an indication of the request's current status and either a pointer to a status monitor or some estimate of when the user can expect the request to be fulfilled. " Cheers, Tom P

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Display status updates/preventing timeouts during long operation
by Robert McPeak 22 Apr '03

22 Apr '03

I've got an external method that performs some manipulations on a CSV file that the user uploads to my zope site. Processing of each line of the CSV file takes up to 1 second (I'm querying some external systems, among other things). These user-uploaded files can contain several thousand lines, and timeouts are happening before the data processing is completed. How can I change the process to report status and prevent timeouts? The user is not going to like looking at a blank page for hours on end...I don't either, for that matter. :) How do I allow the user to download the results as a CSV file? I can create the CSV, but how do I do the UI part? And, where do I put that CSV, as temporary folders don't seem like a good idea... Thanks. Rob McPeak

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Sorting on 2 or more properties
by Michael Long 22 Apr '03

22 Apr '03

Hi all, I am passing a list of objects to a zpt and would like to sort them on 2 or more of the properties. For example I have a class object with the following properties: id professor_name student_name course_number I would like to sort first on the professor_name, then course_number, and then finally student_name. I have googled and can only find examples for sorting on one property at a time. tia, Mike

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Filtered WebDAV View Folder
by Evan Simpson 22 Apr '03

22 Apr '03

Has anyone out there built, or tried to build, something like this: I'd like to be able to create an object that acts as a sort of filtering WebDAV proxy for its container. By this, I mean that if you navigate to the object using WebDAV, it appears to be a collection containing a subset of the objects in its container. This could be configurable, but I'd be happy if it only showed Files, Images, Folders, and ZPTs. Of course, if you looked in one of the Folders "inside" the object, it would also show you a filtered view of that Folder. It would only support normal file operations (PUT, GET, locking, etc.) on the proxied objects. This would allow me to point our web designer's DreamWeaver at this object and allow him to work without worrying about Scripts, SQL, or other clutter. Cheers, Evan @ 4-am

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