[Zope] ZODB transaction ?!

[Matei Conovici]

Hi!

I'm trying to create a folder and put some images in it. My DTML looks 
somewhat like this:

<!--#call "manage_addFolder('somefolder')" -->
<!--#with "_['somefolder']" -->
<!--#call "manage_addImage('zz.gif', imagefile)" -->
<!--#/with -->

My problem is that, sometimes the above works but mostly it doesn't :-),
and I get something like this:

--
Error Type: AttributeError
Error Value: commit_sub

[...]

Traceback (innermost last):
  File /root/Zope-2.0.0b5-linux2-x86/lib/python/ZPublisher/Publish.py, 
  line 209, in publish_module
  File /root/Zope-2.0.0b5-linux2-x86/lib/python/ZPublisher/Publish.py, 
  line 179, in publish
  File /root/Zope-2.0.0b5-linux2-x86/lib/python/Zope/__init__.py, line 
  199, in zpublisher_exception_hook
    (Object: ElementWithAttributes)
  File /root/Zope-2.0.0b5-linux2-x86/lib/python/ZPublisher/Publish.py, 
  line 169, in publish
  File /root/Zope-2.0.0b5-linux2-x86/lib/python/ZODB/Transaction.py,
  line 247, in commit
AttributeError: (see above)
--

I assume I'm getting this because the transaction with the ZODB for
_addFolder does not get (correctly) commit()-ed and the folder object
is not yet there when I try to add the immages.

This happens with current b5 version and b1 as well...

I would _really_ appreciate some hints here :-)

Thanks,

-- 
Matei CONOVICI, cmatei@roedu.net

PS: As a general zope question, is it possible to explicitly ask for
commit() in a SQL method ?