February 2005 - Zope

(no subject)
by cla 03 May '05

03 May '05

Hi would like to know how to put multiple dynamic drop down boxes in zope using dtml or python scripts(if possible) scheme: box1:----> box2 --> box3 --> ... call database and fill call database and fill thanks O SAPO já está livre de vírus com a Panda Software, fique você também! Clique em: http://antivirus.sapo.pt

6 5

Structured text / charsets
by Oliver Sturm 23 Mar '05

23 Mar '05

Hey, although there are lots of postings about charset problems with Structured Text, I haven't found an answer to my specific problem. I have that Zope installation where a large hierarchy of documents has been created over the course of three years. Back then I created a web interface that could be used by people in various European countries to edit content in structured text format, which is then rendered onto pages automatically. In my hierarchy of folders, I established a system that will automatically insert the correct page encoding in the page's header, depending on the country (ISO-8859-1 and ISO-8859-2 are in use). This works fine as far as the content is concerned. For some reason, nobody has ever noticed before that structured text doesn't work well in this scenario. Reading postings about charset problems with structured text, the solution usually involves setting the locale for the Zope instance to the correct value. The problem is, this Zope instance contains data in different charsets, so this doesn't seem to be the solution here. Is there any solution out there that would let me set the locale (as used by the structured text parser) on a folder basis? This is plain Zope 2.5.1 from Debian Stable. Oliver Sturm -- omnibus ex nihilo ducendis sufficit unum Spaces inserted to prevent google email destruction: MSN oliver @ sturmnet.org Jabber sturm @ amessage.de ICQ 27142619 http://www.sturmnet.org/blog

5 7

Problems with removing Verbose Security and possibly Apelib
by Chris Kratz 15 Mar '05

15 Mar '05

We've run into a very strange situation. We been running zope 2.7.3 with Abelib 1.0 and Verbose Security 0.6. Verbose Security is great during development, but it does cause somewhat of a performance hit on a live server. So, recently after profiling our app in zope and finding that Verbose Security was eating a fair amount of time, I decided to try and remove it on our production systems. I removed the Verbose Security from the products directory and from the Products list in the control panel and tried the app again. Unfortunately, this causes the app to break. What appears to happen is that on any object we have used proxy settings on, when run without verbose security, we get a security error. If I go into that object on to the proxy tab, the roles are still selected and clicking update (with making no other changes), "fixes" the problem for a user. What is even weirder is that because we are using apelib, it is easy to see the changes made to the object when we make changes in the zmi. In this particular instance, we can see that even though the object was saved in the ZMI, and the files on disk were modified, the contents of the objects did not change when we updated the proxy settings, yet zope now appears to obey them. The last piece of the puzzle is that returning the VerboseSecurity product allows the application to start working again, proxy roles and all. Any ideas as to why this might be? Is there a chance that the monkey patching Verbose Security does is not reversible? Or is there some weird problem caused by using Verbose Security and Apelib? Thanks for your time, -Chris --- Error example Error Type: Unauthorized Error Value: You are not allowed to access 'select' in this context ...last lines in traceback # PythonScript at /somefunction> Line 3 # Module Shared.DC.Scripts.Bindings, line 178, in __getattr__ Unauthorized: You are not allowed to access 'select' in this context

2 3

Zope 2.7.4 - ZClass Permissions Change?
by Jake 13 Mar '05

13 Mar '05

I have a few ZClass products that no longer allow me to add new objects and it is new since Zope2.7b4. It is happening with a few products like SimpleURL and KnowledgeKit and I am getting errors like: "Unauthorized: You are not allowed to access 'blah' in this context" It could be a method, a list or ZopeTime. I looked over the release files and can't find anything on this specifically. Jake ____________________ http://www.ZopeZone.com "Zoping for the rest of us"

4 6

ExternalFile errors
by Chris H 11 Mar '05

11 Mar '05

Greets; Testing externalFile from collective cvs consistantly gives the following error upon creating an instance, regardless of user that starts the zope process. URL: manage_addExternalFileForm Line 36, Column 5 Expression: standard:'container/gethostname' Names: {'container': <__FactoryDispatcher__ instance at 40f65340>, 'context': <__FactoryDispatcher__ instance at 40f65340>, 'default': <Products.PageTemplates.TALES.Default instance at 0x40b8ae6c>, 'here': <__FactoryDispatcher__ instance at 40f65340>, 'loop': <SafeMapping instance at 40f653e0>, 'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter instance at 0x40b8fb0c>, 'nothing': None, 'options': {'args': ()}, 'repeat': <SafeMapping instance at 40f653e0>, 'request': <HTTPRequest, URL=http://localhost:8080/manage_addProduct/ExternalFile/create>, 'root': <Application instance at 417e2a10>, 'template': <PageTemplateFile at /manage_addExternalFileForm>, 'traverse_subpath': [], 'user': chris} Module Products.PageTemplates.Expressions, line 201, in __call__ Module Products.PageTemplates.Expressions, line 189, in _eval Module Products.PageTemplates.Expressions, line 145, in _eval __traceback_info__: container Module Products.PageTemplates.Expressions, line 340, in restrictedTraverse __traceback_info__: {'path': ['gethostname'], 'TraversalRequestNameStack': []} Unauthorized: You are not allowed to access 'gethostname' in this context (Also, an error occurred while attempting to render the standard error message.) Any suggestions on how to resolve this? /ch

5 5

PHP from Zope - help wanted
by Dafydd Monks 03 Mar '05

03 Mar '05

Hi, I've just takes over a site that runs Zope - the site currently uses flatfile html files. Is it possible to run PHP pages/scripts from zope? if so how? Has anyone out there done it? I'd really appriciate any feedback/help! Dafydd.

4 4

Hanging Zope
by Chris Kratz 03 Mar '05

03 Mar '05

We have been having intermittent problems with zope hanging in both production and development. For what it's worth, it seems as if this problem started to occur since we upgraded to zope 2.7.3 (python 2.3.4) and Apelib 1.0. Previously, we were using a standard zope data.fs. We converted to Apelib for other reasons and now are starting to see these intermittent lockups. When it locks up, it is completely locked and has to be killed with a kill -9. Here is the pertinant output from ps -Aflwm. 0 - 501 2838 20340 0 - - - 88939 - 11:42 pts/5 00:00:06 ./python ../lib/python/Zope/Startup/run.py -C ../etc/zope.conf 0 S 501 - - 0 76 0 - - futex_ 11:42 - 00:00:06 - 1 S 501 - - 0 76 0 - - futex_ 11:43 - 00:00:00 - Zope is not spinning, it's just locked in a futex. I have tried to do use the debugging a spinning zope howto. (http://www.zope.org/Members/4am/debugspinningzope) but that doesn't work. I am assuming it is because the python binary has been stripped. Are there any other tricks to find where or what is locking the threads? Even though I'm running in debug mode, killing does not produce a traceback. Is there any way to force threads to dump a traceback on exit? -Chris --- debugging a spinning zope attempt # cat Z2.pid 2838 # gdb ../bin/python (gdb) attach 2838 ...snip (gdb) info threads 26 Thread 1122839472 (LWP 2845) 0xffffe410 in ?? () 25 Thread 1131232176 (LWP 2846) 0xffffe410 in ?? () 24 Thread 1139624880 (LWP 2847) 0xffffe410 in ?? () 23 Thread 1148017584 (LWP 2848) 0xffffe410 in ?? () 22 Thread 1156410288 (LWP 2849) 0xffffe410 in ?? () 21 Thread 1164802992 (LWP 2850) 0xffffe410 in ?? () 20 Thread 1173195696 (LWP 2851) 0xffffe410 in ?? () 19 Thread 1181588400 (LWP 2852) 0xffffe410 in ?? () 18 Thread 1189981104 (LWP 2853) 0xffffe410 in ?? () 17 Thread 1198373808 (LWP 2854) 0xffffe410 in ?? () 16 Thread 1206766512 (LWP 2855) 0xffffe410 in ?? () 15 Thread 1215159216 (LWP 2856) 0xffffe410 in ?? () 14 Thread 1223551920 (LWP 2857) 0xffffe410 in ?? () 13 Thread 1231944624 (LWP 2858) 0xffffe410 in ?? () 12 Thread 1240337328 (LWP 2859) 0xffffe410 in ?? () 11 Thread 1248730032 (LWP 2860) 0xffffe410 in ?? () 10 Thread 1257122736 (LWP 2861) 0xffffe410 in ?? () 9 Thread 1265515440 (LWP 2862) 0xffffe410 in ?? () 8 Thread 1273908144 (LWP 2863) 0xffffe410 in ?? () 7 Thread 1282300848 (LWP 2864) 0xffffe410 in ?? () 6 Thread 1290693552 (LWP 2865) 0xffffe410 in ?? () 5 Thread 1299086256 (LWP 2866) 0xffffe410 in ?? () 4 Thread 1307478960 (LWP 2867) 0xffffe410 in ?? () 3 Thread 1315871664 (LWP 2868) 0xffffe410 in ?? () 2 Thread 1324264368 (LWP 2869) 0xffffe410 in ?? () 1 Thread 1077192064 (LWP 2838) 0xffffe410 in ?? () (gdb) thread 1 [Switching to thread 1 (Thread 1077192064 (LWP 2838))]#0 0xffffe410 in ?? () (gdb) call PyRun_SimpleString("import sys, traceback; sys.stderr=open('/tmp/tb','w',0); traceback.print_stack()") No symbol "PyRun_SimpleString" in current context.

3 6

classmethod() and zope?
by Jürgen Herrmann 02 Mar '05

02 Mar '05

hi! i have the following method defined in an extension class: def reInitClass(cls): """ docstring """ cls().reInit() reInitClass = classmethod(reInitClass) as one can see this method should call the parameter named "cls" and this way make an instance of cls and then call reInit() on this instance... i'd like to call this method in the __init__.py file of my product: def initialize(registrar): registrar.ViewContainer( ViewContainer, constructors = (addViewContainerForm, addViewContainerMethod) ) ViewContainer.reInitClass() starting zope with these files in place yields the following error message: File "/home/apis/zope-bliss01/Products/ViewContainer/__init__.py", line 10, in initialize ViewContainer.reInitClass() TypeError: 'classmethod' object is not callable wtf??? if a classmethod object is not callable, what is it for then? a simple python example with classmethod() did work of course - so am i trying something impossible in zope? thanks in advance for your replies... regards, juergen herrmann

4 8

ZODB issues
by Craig Lewis 02 Mar '05

02 Mar '05

Hello, I have installed a new instance of zope 2.7.4. I have brought in a Data.fs file from another ISP. I don't know exactly what version this file is from, but I am fairly sure its some 2.x version. My question(s) is what to do next, I am new to zope, but I have tried a lot of things. The basic problem is that the btree structure of the interesting part of the site is broken (perhaps corrupt).I can start and run the server, and browse through the control panel, and perform various administrative tasks. The top level index_html file is just a redirect to the site1 folder structure, which is the one that is broken. I mention this, because this file works, but any contents below site1 are not visible. ===== this works -su-2.05b$ python utilities/ZODBTools/fstest.py var/Data.fs -su-2.05b$ python utilities/ZODBTools/fsrefs.py var/Data.fs as does -su-2.05b$ python utilities/ZODBTools/fsdump.py var/Data.fs | less ====== This doesn't -su-2.05b$ python utilities/ZODBTools/checkbtrees.py var/Data.fs <root> {'Application': <Application instance at 8346650>, 'ZGlobals': <OOBTree object at 0x8910ec8>} ['Application'] <Application instance at 8346650> ['ZGlobals'] <OOBTree object at 0x8910ec8> ['Application'].__error_log__ <SiteErrorLog at error_log> ['Application'].Sync <ZSyncer instance at 890c800> ['Application'].standard_error_message <DTMLMethod instance at 8b6e200> ['Application'].temp_folder MountedObject(id='temp_folder') ['Application'].vhm1 <VirtualHostMonster instance at 8b6ef50> ['Application'].__allow_groups__ <UserFolder instance at 8b6e7a0> ['Application'].session_data_manager <SessionDataManager instance at 8b7c410> ['Application'].browser_id_manager <BrowserIdManager instance at 8b7c350> ['Application'].standard_template.pt <ZopePageTemplate at standard_template.pt> ['Application'].Control_Panel <ApplicationManager instance at 8b86860> ['Application'].standard_html_footer <DTMLMethod instance at 8b868c0> ['Application'].index_html <DTMLMethod instance at 8b86920> ['Application'].site1 <Folder instance at 8b86950> Traceback (most recent call last): File "utilities/ZODBTools/checkbtrees.py", line 122, in ? main(fname) File "utilities/ZODBTools/checkbtrees.py", line 110, in main add_if_new_persistent(todo, v, newpath) File "utilities/ZODBTools/checkbtrees.py", line 28, in add_if_new_persistent getattr(obj, '_', None) # unghostify File "/www/htdocs/esginc.com/zope/lib/python/ZODB/Connection.py", line 600, in setstate self._set_ghost_state(obj, p) File "/www/htdocs/esginc.com/zope/lib/python/ZODB/Connection.py", line 639, in _set_ghost_state state = unpickler.load() File "/www/htdocs/esginc.com/zope/lib/python/ZODB/Connection.py", line 220, in _persistent_load return self[oid] File "/www/htdocs/esginc.com/zope/lib/python/ZODB/Connection.py", line 182, in __getitem__ klass=self._db._classFactory(self, module, name) File "/www/htdocs/esginc.com/zope/lib/python/ZODB/DB.py", line 127, in _classFactory return getattr(__import__(location, _globals, _globals, _silly), ImportError: No module named *ED1fLY3QImx5D39mCNz0gw== =============================================================== nor does this, but I also get this error on a Data.fs that is not broken, so I don't understand what I am doing wrong ? -su-2.05b$ python lib/python/ZODB/fsrecover.py -P 1 -v 2 var/Data.fs Traceback (most recent call last): File "lib/python/ZODB/fsrecover.py", line 374, in ? main() File "lib/python/ZODB/fsrecover.py", line 226, in main opts, (inp, outp) = getopt.getopt(sys.argv[1:], "fv:pP:") ValueError: unpack list of wrong size -su-2.05b$ ================================================================= I attempted to try and follow the instructions to fix a corrupted database, but I got errors that the root did not exist.... following http://www.zopelabs.com/cookbook/1095965033 ============================================================== >>> from Zope.Startup.run import configure >>> configure('/www/htdocs/esginc.com/zope/etc/zope.conf') >>> from ZODB.POSException import POSKeyError >>> obj=root.unrestrictedTraverse('/site1') Traceback (most recent call last): File "<stdin>", line 1, in ? NameError: name 'root' is not defined ================================================================= It really sort of 'seems' like I have mounted the database incorrectly, and if I could fix some simple mistake some where, .... What I have done to import this Data.fs is to copy the file into var, delete the index, modify the zope.conf to be somewhat similar to the way it was in the 'other' server, and copy the files/contents of import folder... ============= -su-2.05b$ ls import/ AdManager.zexp ZopeTutorialExamples.zexp custom.zexp Examples.zexp acl_users.zexp submit_resume_form.zexp Portal.zexp biz_referral_form.zexp README.txt content.zexp

3 4

CMFBTreeFolder Behavior
by David Pratt 28 Feb '05

28 Feb '05

Hi. I am working with the CMFBTreeFolder for the first time. I thought it would make sense since I am wanting to use this type for an uploads folder. There may be thousands of objects. Once files have been uploaded to the folder, I am running a script to pull out images using a for statement like this: # Iterate over folder contents for name, obj in start_dir.objectItems(['Portal Image']): and then executing some logic on the images afterwards. I am planning to cron the script unless I can figure a way to execute the logic as files are coming into the folder (which would be the best - so any ideas here would be great). In any case, what happens is that about half the objects get processed with each run of the script. For example if I had 1030 objects about half gets processed, and then half of that and so on. I may take 4 runs to get everything processed in the folder. On a normal Folder or CMF Portal Folder, all objects get processed in one run. Maybe this is what it is supposed to do and I should loop my logic and test each time or something. Can someone give me some insight on this. Is this normal ? Or should I be using anything else to process all objects of a certain type in my BTreeFolder (so I know I am getting them all) on one pass. Regards, David

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