request.model in public layout

Hello,


We have added a fix to the Silva-1.4, Silva-1.5 lines and the upcomming 
Silva version to prevent a potential memory leak.

This fix involves an explicit delete of the model from the request, when 
the public layout is rendered. Having the model attached to the request 
resulted in a cyclic reference of a type that could not be garbage 
collected by Python.

The default Silva public layout templates make no use of the model that 
used to be available and having the model on the request for public 
rendering was never intended to be a public API. In public renderings, 
the content object being rendered is available through the 'context' 
namespace.

For the rare situations where you have developed code for the public 
rendering of content that uses model.request (or model/request in a 
pagetemplate) we now add the model to the request.other dictionary.

The upcomming bugfix releases for 1.4, 1.5 and the new Silva version 
will include this fix.


(if you have questions about this, please send these to the mailing 
list, as I might not be available to answer questions mailed to me 
directly).


kind regards,
jw

-- 
Jan-Wijbrand Kolman
[email protected]