August 2003 - Zope-Dev

501 NotImplemented in Zope 2.7 beta1
by Jim Washington 15 Aug '03

15 Aug '03

I have been noticing a few "501 Not Implemented" errors in the ZMI in 2.7 beta. The ones I have encountered are fixed by changing method="get" to method="post" in the html/dtml forms in e.g., Aqueduct.py. I do not know the "proper" fix. Also, this is weird enough (and perhaps merely a beta issue) that I could not decide the proper category in the bug collector or even what to search on to see if it had been reported previously. So, consider this an FYI should anyone want to take a stab at fixing it or reporting it to the collector. -- Jim Washington

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Re: [Zope-dev] Packing (still) hosed in 2.6.2?
by Anthony Baxter 15 Aug '03

15 Aug '03

Woohoo! Fixed. I created an empty file, then used copyTransactionsFrom to copy all transactions across. This patched the backpointers. fsrecover.py should probably get some smarts to do something like this as well, but I've spent far too long on this problem already... :-/ from ZODB import FileStorage infilename='/app/zope/dev_csr_server/recover/Data.fs' outfilename='/app/zope/dev_csr_server/recover/Out.fs' outfs = FileStorage.FileStorage(outfilename) infs = FileStorage.FileStorage(infilename) outfs.copyTransactionsFrom(infs) I have some small patches to fsdump that outputs expected prev records alongside the actual ones, is this useful enough to check in? Anthony

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Packing (still) hosed in 2.6.2?
by Anthony Baxter 15 Aug '03

15 Aug '03

I remember that 2.6 had issues with packing, but I was under the impression that they'd been fixed... However, attempting to pack a Data.fs in 2.6-current-cvs fails for me: File "/export/01/zope/dev_csr_code/lib/python/ZODB/DB.py", line 526, in pack try: self._storage.pack(t,referencesf) File "/export/01/zope/dev_csr_code/lib/python/ZODB/FileStorage.py", line 1503, in pack opos = p.pack() File "/export/01/zope/dev_csr_code/lib/python/ZODB/fspack.py", line 680, in pack self.gc.findReachable() File "/export/01/zope/dev_csr_code/lib/python/ZODB/fspack.py", line 464, in findReachable self.buildPackIndex() File "/export/01/zope/dev_csr_code/lib/python/ZODB/fspack.py", line 486, in buildPackIndex self.checkData(th, tpos, dh, pos) File "/export/01/zope/dev_csr_code/lib/python/ZODB/fspack.py", line 189, in checkData ": %d != %d", dh.tloc, tpos) File "/export/01/zope/dev_csr_code/lib/python/ZODB/fspack.py", line 170, in fail raise CorruptedError(s) ZODB.fspack.CorruptedError: /app/zope/dev_csr_server/var/Data.fs.packtest:9200838:data record does not point to transaction header: 17391715 != 9200760 This is reproducible. The particular Zope that uses this file was shut down cleanly before attempting to pack the DB. The code that fails to pack is: import ZODB from ZODB import FileStorage filename='/app/zope/dev_csr_server/var/Data.fs.packtest' store = FileStorage.FileStorage(filename) db = ZODB.DB(store) db.pack() # boom. Help? I'm using the ZODB that's in the current 2.6 branch of CVS - according to ZODB/__init__.py it's version 3.1.2. Is a newer version of ZODB going to help here? Anthony

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FileUpload questions
by Toby Gustafson 15 Aug '03

15 Aug '03

Hello, I have been looking at the FileUpload class defined in HTTPRequest.py but am still a little confused about how it works. When a form is submitted with an <input type="file" ...>, where are the contents of the uploaded file stored? Is it automatically stored in the ZODB, or is it stored in memory until some other code (like that in Image.py) stores it? The reason I am asking is that I want to store uploaded files on the file system instead of in the ZODB. (We are running Zope behind an Apache web server, so the uploaded files will be placed under Apache's document root so they can be served directly by Apache.) Being new to Zope and Python, it is not clear to me exactly how to go about this. Any suggestions would be appreciated, or if somebody knows where there is some sample code and could point me to it, that would be great too. Thanks, --Toby. --------------------------- Toby Gustafson Senior Software Engineer Tyrell Software Corporation Email: tobyg(a)tyrell.com ---------------------------

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security issue
by Toby Gustafson 14 Aug '03

14 Aug '03

Hello, I am having a problem accessing a function defined in a product I have created and installed. The product is called StoreEvent, and it was created using the PloneMinimalInstall as a guide. In the StoreEvent product is a file called StoreEvent, which contains a function searchForStoreEvents. This function is outside of the StoreEvent class which is also defined in the file. I have created a page template which contains a form, and when the form is submitted, a script is executed. From that script I try to call the function with the lines: from Products.StoreEvent import StoreEvent ... storeEvents = StoreEvents.searchForStoreEvents(context, ...) When I bring up the page and submit it, I get a popup asking me to enter a username and password. When I cancel that, I get an error page with the message "You are not allowed to access searchForStoreEvents in this context". I have read the security document at: http://www.zope.org/Documentation/Books/ZDG/current/Security.stx and have tried adding several things to my StoreEvent.__init__.py file, such as: modulesecurity = ModuleSecurityInfo() modulesecurity.declarePublic( \ 'Products.StoreEvent.searchForStoreEvents') modulesecurity.apply(globals()) However, nothing seems to work. Anybody have any idea what I am doing wrong. Thanks in advance, --Toby. --------------------------- Toby Gustafson Senior Software Engineer Tyrell Software Corporation Email: tobyg(a)tyrell.com ---------------------------

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pre-export and post-import hooks.
by Romain Slootmaekers 11 Aug '03

11 Aug '03

Yo, I have an object for which I'd like to have pre-export and post import-hooks. After some code browsing, I found the ObjectManager api with the manage_exportObject method. overwriting this for the export looks good, but the problem is that this only works when called directly on the object, and not when you export a container of the object in question. Is there an easy solution to this problem ? Romain Slootmaekers

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error in BTreeFolder2
by robert 11 Aug '03

11 Aug '03

I tried to delete a couple of elements from a BTreeFolder2 and got the following traceback: Exception traceback Time 2003/08/10 21:46:29.655 GMT+2 User Name (User Id) robert (robert) Request URL http://localhost:8080/Zehnder/sonntag/portal_memberdata/manage_delObjects Exception Type NameError Exception Value global name 'sys' is not defined Traceback (innermost last): * Module ZPublisher.Publish, line 98, in publish * Module ZPublisher.mapply, line 88, in mapply * Module ZPublisher.Publish, line 39, in call_object * Module OFS.ObjectManager, line 447, in manage_delObjects * Module Products.BTreeFolder2.BTreeFolder2, line 363, in _delObject NameError: global name 'sys' is not defined -- mit freundlichen Grüssen Robert Rottermann www.redCOR.ch

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TALES idea: tuple unpacking
by Richard Jones 08 Aug '03

08 Aug '03

During the Melbourne Zope3 Sprint, someone ran up against a situation where they'd have liked to have TALES perform a tuple unpacking like Python can. I've just run into a similar situation :) Say a method listFilesByUser returns a list of (user, [files]) it'd be nice to be able to:: tal:repeat="user,files here/listFilesByUser" or similar. Currently we would have to use a python: expression to manually unpack the tuple. Kinda yucky. Any comments? Richard

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Re: [Zope] CacheManager missing in 2.6.2b4 :-(
by Chris Withers 08 Aug '03

08 Aug '03

[moving to Zope-Dev] Jamie Heilman wrote: > That depends on the cache replacement policy you need. If you're not > tied to LFU then you can just switch to using my MemoryCache product. > (With all the various caveats surrounding it, of course, python 2.2, > patching Zope, etc.) Why Python 2.2? What's the patching you do? What's 'etc'? Have you submitted a collector issue for all this? If so, I might try and work on it some time, although it's not an area I specialise in :-( I wonder if anyone on this list could help out? cheers, Chris

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Zope.app() dance with 2.7
by Erik A.Dahl 08 Aug '03

08 Aug '03

How does one do the old: import Zope app=Zope.app() Dance with 2.7? I get the following error from dbtab: AttributeError: DefaultConfiguration instance has no attribute 'dbtab' Thanks, -EAD

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