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Re: [Zope] LocalFS - large files / broken connections
by Jaroslav Lukesh 18 Aug '03

18 Aug '03

Hi, FreeBSD has some problems with python if you use it much. It is best to search archives for BSD unpredictable problems with Zope, it wants some more memory for something (stack??) than default 64kB. Maybe here could be your problems. Regards JL. ---------- Odesílatel: David Siedband <david(a)calteg.org> It's on a Sun e3000 running FreeBSD. Sorry for not mentioning that in my original post. -- David On Saturday, August 16, 2003, at 11:54 AM, Jaroslav Lukesh wrote: >> Odesílatel: David Siedband <david(a)calteg.org> >> I'm using LocalFS as a repository for uploading files. Many files are >> relatively large, perhaps in the 10-20 Meg range. >> >> Is the file cached by Zope and then written to the filesystem all at >> once or is it written to the filesystem in incrementally? From the >> product code below, it looks like it it writing directly to the path >> location... >> >> What happens if someone is uploading a file and their net connection >> is >> broken? How would this be handled? Could this result in a partial >> file being cached somewhere that needs to be purged or perhaps a write >> process that needs to be killed off? > > Hi David, > > do you use windows, true? Use linux, not windows! I have no problems > under > Linux, but few unresolved problems under windows (same version of zope, > same products, same dats.fs) in windows.

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Re: [Zope] Creating products
by Paul Winkler 18 Aug '03

18 Aug '03

On Sun, Aug 17, 2003 at 04:15:15PM -0500, Dustin Mitchell wrote: > Brilliant! Thanks for your help :-) you're welcome... not brilliant, i just made a related mistake fairly recently :-\ > Now that I have my foot in the door wrt adding objects, I'll try reading > the source again, and if I feel like I've got it down I'll write a > howto.. Hmm, maybe this is an issue that should go in the Dev. Guide "Gotchas" section on zope.org. -- Paul Winkler http://www.slinkp.com

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Re: [Zope] LocalFS - large files / broken connections
by Jaroslav Lukesh 18 Aug '03

18 Aug '03

> Odesílatel: David Siedband <david(a)calteg.org> > I'm using LocalFS as a repository for uploading files. Many files are > relatively large, perhaps in the 10-20 Meg range. > > Is the file cached by Zope and then written to the filesystem all at > once or is it written to the filesystem in incrementally? From the > product code below, it looks like it it writing directly to the path > location... > > What happens if someone is uploading a file and their net connection is > broken? How would this be handled? Could this result in a partial > file being cached somewhere that needs to be purged or perhaps a write > process that needs to be killed off? Hi David, do you use windows, true? Use linux, not windows! I have no problems under Linux, but few unresolved problems under windows (same version of zope, same products, same dats.fs) in windows. Regards JL.

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Redirecting based upone user
by Simon Faulkner 17 Aug '03

17 Aug '03

I have a list of users names in a MySQL table and I would like to write an index_html ZPT that sends the user to show_depots?depot=user/GetUsernName (ZPT) if they are in the MySQL list and show_countries (a different ZPT) if they are not. How should I go about this? Do I make index_html a Python script or ask them to login to a script /tracking/login maybe? Simon

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Creating products
by Dustin Mitchell 17 Aug '03

17 Aug '03

I can't seem to find the straight dope on this one in the documentation. I have a Python product, named Volunteer. It has several classes defined within it (VolunteerUserFolder, Opportunity, etc.). Each class defines constructors e.g., manage_addOpportunity and manage_addOpportunityForm. In order to instantiate one of these classes programmatically, I know I need to do something like: context.manage_addProduct['Volunteer'].manage_addOpportunity(title="hi") but this doesn't seem to work -- manage_addOpportunity is not found. I know that context.manage_addProduct['Volunteer'] is some sort of proxy for my product, but what is the list of attributes I can access from this point (not counting acquisition, obviously)? If I wanted to add a static product-level function (for example, run_background_check(ssn)), where would I put that function? Thanks to anyone who can shed some light on all of this or direct me toward a snippet of documentation I haven't found :-) Dustin -- Dustin Mitchell dustin@ywlcs.org/djmitche@alumni.uchicago.edu http://people.cs.uchicago.edu/~dustin/ PGP Key: http://people.cs.uchicago.edu/~dustin/pubkey.txt

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LocalFS - large files / broken connections
by David Siedband 17 Aug '03

17 Aug '03

I'm using LocalFS as a repository for uploading files. Many files are relatively large, perhaps in the 10-20 Meg range. Is the file cached by Zope and then written to the filesystem all at once or is it written to the filesystem in incrementally? From the product code below, it looks like it it writing directly to the path location... What happens if someone is uploading a file and their net connection is broken? How would this be handled? Could this result in a partial file being cached somewhere that needs to be purged or perhaps a write process that needs to be killed off? Thanks, -- David Here's what I think is the relevant code from the product... def manage_upload(self, file, id='', action='manage_workspace', REQUEST=None): """Upload a file to the local file system. The 'file' parameter is a FileUpload instance representing the uploaded file.""" if hasattr(file,'filename'): filename=file.filename else: filename=file.name if not id: if '/' in filename: id=filename[string.rfind(filename,'/')+1:] elif '\\' in filename: id=filename[string.rfind(filename,'\\')+1:] elif ':' in filename: id=filename[string.rfind(filename,':')+1:] else: id=filename try: self._checkId(id,1) except: raise 'Upload Error', MessageDialog( title='Invalid Id', message=sys.exc_value, action ='manage_main') path = self._getpath(id) if os.path.exists(path): self.manage_overwrite(file, path, REQUEST) else: self._write_file(file, path) if REQUEST: return MessageDialog( title='Success!', message='Your file has been uploaded.', action=action)

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Missing Variable
by Simon Faulkner 17 Aug '03

17 Aug '03

How can I make a variable default to a value? if country is passed in my the URL (show_depot?country=France) then request/country is France and that's great but if the ZPT is called with no country ie just it's URL show_depot then I would like to set a variable country="Manager" Any pointers... Simon

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How do I exclude a specific item from a tal:repeat
by Jordan Carswell 17 Aug '03

17 Aug '03

How do I exclude a particular item from being returned from the following statement. I have a file i use with a particular name and I don't want it to show up in my listing... tal:repeat="obj python:here.getFolderContents(suppressHiddenFiles=1)" Any suggestions are gratefully accepted! Jordan Carswell, Web Graphic Designer Houston Community College-Northwest

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management process does not work for me
by Marcus Bergmann 17 Aug '03

17 Aug '03

Hello, the management process which restarts Zope after a crash does not work for me. On Unix the default behaviour is to create a management process if the option '-Z1' or '-Zyes' in the 'start' script is not given. My Zope instance wasn't restarted after a crash and I can't find such a process after a restart by hand. To get sure, I added '-Zyes' to the 'start' file and restarted Zope once again. But 'ps -efa' shows only the normal Zope processes. Zope version: 2.6.1 OS: SunOS 5.8 Anyone got an idea? Thanks, Marcus P.S. Sorry, our webmailer doesn't supports reply-to ;-(

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zsqlmethod and inserting count(*) value blues
by Iñigo Serna 17 Aug '03

17 Aug '03

Hi, I have a problem with a zsqlmethod. In mysql client command line next works: ------------------ mysql ------------------- mysql> select @n := count(*) from tbl; mysql> insert into tbl2 values (@n+1, 'data'); -------------------------------------------- But This identical zsqlmethod does not: ---------------- ZSQLMETHOD ---------------- select @n:= count(*) from tbl; insert into tbl2 values (@n+1, 'data'); -------------------------------------------- This is the error message I get: ------------------ Error ------------------ Error, _mysql_exceptions.ProgrammingError: (1064, "You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near ';\ninsert into tbl2 values ( @n + 1, 'data)' ; ________________________________________________________________________ -SQL used: select @n:=count(*) from tbl; insert into tbl2 values (@n+1, 'data'); -------------------------------------------- I've achieved the functionality I want with next code: ---------------- ZSQLMETHOD ---------------- insert into tbl values ( <dtml-var "_.len(getMessages()) + 1">, 'data' ) -------------------------------------------- where getMessages is a simple zsqlmethod containing "select * from tbl", but I suppose there is a better way to do it. Any ideas? Thanks in advance, Iñigo Serna PS: I'm using next versions: Linux 2.4.20, Zope 2.6, MySQL-4.0.14, MySQL-python 0.9.2

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