TastyPie & projecting of spatial data

[Stodge]

One of my Django models includes a lat/long coordinate using PostGIS. It's data that I receive as a lat/long pair but the web client will display it as a cartesian coordinate in the local coordinate system.

Is there a mechanism in TastyPie to automatically project the coordinates, or do I need to manually apply the projection, maybe in the dehydrate function?

Thanks