How to get the database where a model instance was saved to in Django?

Question

I have a django application using multiple databases. Given an instance of a model, how can I obtain the database where it is stored (if any)? I need this to save another object to the same database as the first.

def add_ducks_to_hunt(hunter):
    db = # the hunter's db
    duck = Duck()
    duck.save(using=db)

Answer 1

Use _state.db, as in:

my_obj = MyModel.objects.get(pk=1)
my_obj._state.db

This is shown in the routing example.