[Zope-dev] Zope 2.12: versions thingy in Control_Panel

[Andreas Jung]

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On 16.04.2009 1:09 Uhr, Hanno Schlichting wrote:
> Chris Withers wrote:
>> A little gotcha in 2.12 is that, because Versions are now gone, you get 
>> some weird errors when you try and view the ZMI using an older Data.fs.
>>
>> The following fixed it for me:
>>
>>  >>> cp = app.Control_Panel
>>  >>> cp._objects = tuple([i for i in app._objects if
>>                           i['id']!='Versions'])
>>  >>> import transaction
>>  >>> transaction.get().commit()
> 
> I think we don't have anything like zope.app.generations for Zope2 do
> we? 

AFAIK no (as far as I remember a discussion with Theuni about
using generations).

> IIRC we added code to catch and inline-migrate these things so far
> (I'm thinking about some ZCatalog changes from a while back).

You may refer to the on-the-fly migration for the catalogs used
for product help (somewhere in OFSP) or perhaps to the __len__
migration code.


> 
> So the way to handle this would be to add some code to the part of the
> Zope startup code that creates the Control_Panel to always check for
> "Versions" in there and remove it when found, correct?

+1

Andreas
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