[Zope] You are not allowed to access 'a particular str' in this context

Dieter Maurer dieter at handshake.de
Thu Jan 24 13:16:49 EST 2008

Gerhard Schmidt wrote at 2008-1-24 16:56 +0100:
>I have a rather strange Problem.
>I have a PersistentList containing PersistentMapping objects.
>[{'Status': 'Read', 'Confirm': False, 'Read': DateTime('2008/01/24
>16:03:32.508 GMT+1'), 'Expires': None, 'SenderID': 'DC83D1F1DB88CDE8', 'Date':
>DateTime('2008/01/24 15:51:50.998 GMT+1'), 'Message': 'Da ist ein permission
>test', 'ID': '20080124155150_4641 at DC83D1F1DB88CDE8'}]
>When do a tal:repeat="message here/getMessages" and a tal:replace="message"
>everything functions as expected. When i try tal:replace="message/ID" I get an
> Unauthorized Exception "You are not allowed to access 'a particular str' in
>this context"

Reconfigure your "error_log" object to not ignore "Unauthorized" exceptions,
reproduce the error and then look at the corresponding traceback.

I expect that the "message" object implements a "__bobo_traverse__"
method (or gets one through "Five").
Zope is a bit stupid when "__bobo_traverse__" returns an object
without security declarations -- such as e.g. a string.
In this case, it insists that "getattr" must return the same object
and raise "Unauthorized" otherwise.


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