title: django-piston: how to get values of a many to many field?
body: <p>I have a model with ManyToManyField to another model. I would like to get all the info on a particular record (including the related info from other models) return by JSON.</p>
  
  <p>How to get django-piston to display those values? I would be happy with just primary keys.
  Or can you suggest another option ?</p>