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On 12/24/2013 04:39 AM, Gerhard Schmidt wrote:
> Hi
> 
> i'm building a web application based on pyramid and traversal in a 
> ZODB. So far it's working fine with Container derived from Persitent 
> Mapping. But some containers will get many children so i'm trying to 
> use a BTree based Container. So far no success.
> 
> I've tried
> 
> from BTrees.OOBTree import BTree from persistent import Persistent
> 
> class container(BTree, Persistent)
> 
> I'ts working but changes don't geht stored in the zodb.
> 
> I there a example how to do this out there or can someone get mit a 
> Hint what im missing.

You don't need to derive from Persistent (BTree already does that for you).

For an example, you could look at SubstanceD's Folder class:

 https://github.com/Pylons/substanced/blob/master/substanced/folder/__init__.py


Tres.
- -- 
===================================================================
Tres Seaver          +1 540-429-0999          [email protected]
Palladion Software   "Excellence by Design"    http://palladion.com
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