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I'm astounded that nobody has come across this before, but the
CMFCore.TypesTool.constructContent() function is supposed to return the
object id in the event that no RESPONSE is passed in - at least
according to CMFPlone.PloneFolder.invokeFactory().

Presently, it in fact returns nothing - breaking this implicit contract.

This has the unfortunate effect of *NOT* allowing you to generate your
own object id within your object construction function (we have a number
of requirements where external systems expect to see id's of particular
formats and I don't want to depend upon/pollute the generateId script
with specific meta_type requirements).

Plone's createObject script can't find this newly constructed object as
it's id isn't that generated by the generateId script and fails trying
to do a getTypeInfo() call on a None object.

I'm posting the patch here because in my mind this *IS* a very important
patch and I find the release schedule for CMF{Core,Default} inextricable ;)

Alan
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--- CMFCore/TypesTool.py.orig   2005-04-16 01:04:05.181168664 +1000
+++ CMFCore/TypesTool.py        2005-04-16 00:58:19.661695608 +1000
@@ -712,6 +712,7 @@
             immediate_url = '%s/%s' % ( ob.absolute_url()
                                       , info.immediate_view )
             RESPONSE.redirect( immediate_url )
+       return ob.getId()
 
     security.declarePrivate( 'listActions' )
     def listActions( self, info=None ):
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