stefanofontanelli/ColanderAlchemy — pull request #27 by tisdall (2013-06-18 14:20:22+00:00)
Title: added note about callable column default only being called once

I have a field that defaults to 'datetime.now' and was noticing that the form was consistently using the same value every time the form was rendered. That makes sense since Colander only accepts a static value, but is surprising if you don't already know that. I thought it would be prudent to at least add a warning about it in the documents.