Django serialize to JSON

Question

I have a Django model (schedule) with the class of entity, that is the parent of Activity, that is the parent of Event.

class Entity(models.Model):
    <...>

class Activity(models.Model):
    <...>
    team_entity = models.ForeignKey(Entity)
    <...>   

class Event(models.Model):
    <...>
    activity = models.ForeignKey(Activity)
    <...>

How do I serialize and get both the child object and grand children as part of the JSON file?

Answer 1

Before you do serialization, when retrieving your objects, to preserve the relationships use select_related() to get children, grandchildren, etc

see http://docs.djangoproject.com/en/dev/ref/models/querysets/

Answer 2

I now use django-piston. This does the trick.