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[Warning] Zope 3 component architecture (CA) not reliably usable for registrations from Python
by Dieter Maurer 12 Jan '07

12 Jan '07

I tried to use Zope3 events to get informed when requests start and end. One of our modules (the interface module to "jpype") requires such a notification for reliable work. Therefore, it tried to register the corresponding subscriptions on import of this module. Unfortunately, this works very unreliably -- for the following reasons: The CA performs by itself only extremely minimal initialization. Especially, it does not register the "Adapters" service, necessary for the registration of event subscriptions. The full CA initialization is only performed quite late, in the call to "Products.Five.initialize". Event notification registration attempts before this time will fail (with a "ComponentLookupError: 'Adapters'"), those performed after this time will succeed. The "Five" initialization is stupid enough that it will fail when the service registration for 'Adapters' has already been performed. At the current state, event notifications can reliably only be defined via ZCML. This is unfortunate for our use case where the registration should be bound to the import of a given module. -- Dieter

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SSL and Apache
by Meitham Jamaa 11 Jan '07

11 Jan '07

Hi, I am writing a thesis about the security of Zope and have these questions. I am wondering if this is the right place to ask. Is Zope behind Apache the only solution to provide SSL connection to Zope? If not what are the other options? Have there been any work on making Zope being able to handle SSL itself? If not, why it is hard to? Kindest regards ~Meitham

4 3

store dict in session
by Dennis Schulz 11 Jan '07

11 Jan '07

According to the zope book it should be possible to store dicts in session. When I try to assign a dictionary to a ordinary zope 2 session, with lists there is no problem. why?: requestlist = {} for i in self.request.form: key = i value = self.request.form[i] requestlist[i] = self.request.form[i] sess = self.context.REQUEST.SESSION sess['pr_reqlist'] = requestlist I get the following error: Traceback (innermost last): * Module ZPublisher.Publish, line 196, in publish_module_standard * Module Products.PlacelessTranslationService.PatchStringIO, line 34, in new_publish * Module ZPublisher.Publish, line 146, in publish * Module Zope2.App.startup, line 222, in zpublisher_exception_hook * Module ZPublisher.Publish, line 121, in publish * Module Zope2.App.startup, line 240, in commit * Module transaction._manager, line 96, in commit * Module transaction._transaction, line 380, in commit * Module transaction._transaction, line 378, in commit * Module transaction._transaction, line 433, in _commitResources * Module ZODB.Connection, line 484, in commit * Module ZODB.Connection, line 526, in _commit * Module ZODB.Connection, line 553, in _store_objects * Module ZODB.serialize, line 407, in serialize * Module ZODB.serialize, line 416, in _dump * Module copy_reg, line 69, in _reduce_ex TypeError: can't pickle instancemethod objects (Also, the following error occurred while attempting to render the standard error message, please see the event log for full details: An operation previously failed, with traceback: File "C:\Python\Zope\Zope\lib\python\ZServer\PubCore\ZServerPublisher.py", line 23, in __init__ response=response) File "C:\Python\Zope\Zope\lib\python\ZPublisher\Publish.py", line 395, in publish_module environ, debug, request, response) File "C:\Python\Zope\Zope\lib\python\ZPublisher\Publish.py", line 196, in publish_module_standard response = publish(request, module_name, after_list, debug=debug) File "C:\Python\Zope\Instance\Products\PlacelessTranslationService\PatchStringIO.py", line 34, in new_publish x = Publish.old_publish(request, module_name, after_list, debug) File "C:\Python\Zope\Zope\lib\python\ZPublisher\Publish.py", line 121, in publish transactions_manager.commit() File "C:\Python\Zope\Zope\lib\python\Zope2\App\startup.py", line 240, in commit transaction.commit() File "C:\Python\Zope\Zope\lib\python\transaction\_manager.py", line 96, in commit return self.get().commit(sub, deprecation_wng=False) File "C:\Python\Zope\Zope\lib\python\transaction\_transaction.py", line 380, in commit self._saveCommitishError() # This raises! File "C:\Python\Zope\Zope\lib\python\transaction\_transaction.py", line 378, in commit self._commitResources() File "C:\Python\Zope\Zope\lib\python\transaction\_transaction.py", line 433, in _commitResources rm.commit(self) File "C:\Python\Zope\Zope\lib\python\ZODB\Connection.py", line 484, in commit self._commit(transaction) File "C:\Python\Zope\Zope\lib\python\ZODB\Connection.py", line 526, in _commit self._store_objects(ObjectWriter(obj), transaction) File "C:\Python\Zope\Zope\lib\python\ZODB\Connection.py", line 553, in _store_objects p = writer.serialize(obj) # This calls __getstate__ of obj File "C:\Python\Zope\Zope\lib\python\ZODB\serialize.py", line 407, in serialize return self._dump(meta, obj.__getstate__()) File "C:\Python\Zope\Zope\lib\python\ZODB\serialize.py", line 416, in _dump self._p.dump(state) File "C:\Python\Zope\Python\lib\copy_reg.py", line 69, in _reduce_ex raise TypeError, "can't pickle %s objects" % base.__name__ TypeError: can't pickle instancemethod objects )

5 4

ISO-8859-5 (cyrillic) and TextIndexNG2
by mark hellewell 11 Jan '07

11 Jan '07

Hi there, wondering if you might be able to help me? I've got plain text documents that contain iso-8859-5 chracters (not utf-8) and I'd like to get TextIndexNG2 to catalog their contents. I've tried creating an Index with default encoding set to iso-8859-5 but no joy, the cataloger won't catalog the docs! I've also tried setting the Zope locale to russian, but again no good. Any pointers greatly appreciated! Thanks, Mark

3 5

Running zope egg-packaged product tests
by Sébastien Nicouleaud 11 Jan '07

11 Jan '07

Hello, I'm trying to run tests for an egg-packaged product, deployed in development mode (I'm using zope 2.10.1). I'm using the "zopectl test" command, with "--path" set to my product source directory. The problem is that the test runner seems to call the product initialize() function 2 times, resulting in duplicated profile id declarations... Is there a way to run the tests for an egg-packaged product without setting the --path option to the source dir, in order to prevent this duplication ? Thanks Seb

1 0

Different field conversion for lines and ulines : why?
by Pascal Peregrina 11 Jan '07

11 Jan '07

Hi, I would like to know why lines fields are not converted with the same logic as ulines fields in Zpublisher.Converters. lines uses splitlines() while ulines uses split('\n') This gives different result: >>> ''.splitlines() [] >>> ''.split('\n') [''] >>> u''.splitlines() [] >>> u''.split('\n') [u''] So, when creating an empty Zope property for example, ulines version value will be (u'',) while lines version value will be () Thanks. Pascal

2 2

ZSQL Methods and transaction control
by robert rottermann 10 Jan '07

10 Jan '07

Hi there, I am implementing a tool to handle userdata that is stored in a MySQL db. The underlaying logic of the stored procedures used to maintain the db content dictate that I have to control the transactions myself. I understand that there is a way to handle transaction controll in the ZMySQL methods. However I find no documentation at all on how to use it. Without using ZMySQL methods I would be using the following piece of code: db = mysql.connect(host="localhost" ...) cursor = db.cursor() query = "CALL insertUser('%s', '$xxx$', @id, @error);select @id, @error" % 'JohnTheUser' cursor.execute(query) # get the next resultset, it has the result of the select cursor.nextset() result = cursor.fetchall()[0] error = int(result[1]) if error: print "error %s when trying to add user %s" % (ERRRORS[error], 'JohnTheUser') db.rollback() continue #we are in a loop actually .. db.commit() How can I mimic that using ZSQL Methods thanks for any pointers Robert

4 3

TypeError when copy FS python script to custom folder
by Edmund Moseley 10 Jan '07

10 Jan '07

I am in the process of trying to add RAMCaches to my python scripts, and wanted to test it out TTW via custom. However, whenever I make a copy of my FS python script to custom, and then view the object which uses this script, I get the following error: TypeError: arg is not a code object This python script is used by my archetype object to fetch a vocabulary list, by calling a separate zsql method. Any ideas why this happens? Thanks, Edmund Here is the last part of the traceback: <snip> # Module TAL.TALInterpreter, line 281, in interpret # Module TAL.TALInterpreter, line 507, in do_setLocal_tal # Module Products.PageTemplates.TALES, line 221, in evaluate URL: file:MEIS/skins/MEIS/vocab_or_other.pt Line 52, Column 6 Expression: <PythonExpr field.Vocabulary(here)> Names: {'container': <PloneSite at /meis>, 'context': <Autopsy at /meis/meis/unfiledautopsies/b199301068>, 'default': <Products.PageTemplates.TALES.Default instance at 0x2aaab56cb4d0>, 'here': <Autopsy at /meis/meis/unfiledautopsies/b199301068>, 'loop': <Products.PageTemplates.TALES.SafeMapping object at 0x88182d8>, 'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter instance at 0x2aaab56cb6c8>, 'nothing': None, 'options': {'args': ()}, 'repeat': <Products.PageTemplates.TALES.SafeMapping object at 0x88182d8>, 'request': <HTTPRequest, URL=https://plone.ocme.unc.edu/meis/meis/unfiledautopsies/b199301068/autops…>, 'root': <Application at >, 'template': <FSPageTemplate at /meis/autopsy_view used for /meis/meis/unfiledautopsies/b199301068>, 'traverse_subpath': [], 'user': <PropertiedUser 'zadmin'>} # Module Products.PageTemplates.ZRPythonExpr, line 47, in __call__ __traceback_info__: field.Vocabulary(here) # Module Python expression "field.Vocabulary(here)", line 1, in <expression> # Module Products.Archetypes.Field, line 441, in Vocabulary # Module Products.Archetypes.utils, line 137, in mapply # Module inspect, line 607, in getargs TypeError: arg is not a code object

2 1

Integrating METAL into Zope Product
by Brian Brinegar 10 Jan '07

10 Jan '07

I've got a Zope product which will render itself using standard_html_header and standard_html_footer if they exist. I would like this same product to look for a specific Page Template (ptMaster) and render itself using a macro and filling a slot with it's contents. Any pointers/examples on integrating METAL into a product? Thanks, -- Brian Brinegar Web Systems Developer Engineering Computer Network

2 1

which python version for Zope 2.9.6
by Marcus Schopen 10 Jan '07

10 Jan '07

Hi, is it a problem to use ubuntu's (6.10) standard python 2.4.4c1 for Zope 2.9.6 or Zope 2.10.1 ? If not which version should I build from source? Thanks, Marcus

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