Is there an easy way to get django to serialize with the actual field
name instead of changing it to pk?
In short -- no. Django's serializers are fairly primitive, and not especially customizable.
If you need to customize the field names during serialization, you'll either need to roll your own serialization (e.g., write a model->Python dictionary converter, and pass that the json.dumps()), or use a third party serialization tool.
Yours,
Russ Magee %-)