Easily copy Django objects and their child objects, similar to Python's built-in deepcopy.

Using django-deepcopy on an object will copy the objects th These are the objects that would be deleted when calling .delete() on the object (these can be viewed without deleting anything, by clicking the "Delete"-button in the Django admin page for the object. You will be shown a confirmation page, which lists the objects that will be deleted.)

from django_deepcopy import django_deepcopy

class Bike(models.Model):
  id = models.UUIDField(primary_key=True, default=uuid.uuid4)


class Wheel(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4)
    bike = models.ForeignKey(Bike, on_delete=models.CASCADE, related_name='wheels')


old_bike = Bike.objects.create()
wheels = [
    Wheel.objects.create(bike=old_bike),
    Wheel.objects.create(bike=old_bike),
]
new_bike = django_deepcopy(old_bike)

print(wheels[0] != new_bike.wheels.first())
# Outputs: False

• Currently only works on models using UUIDs as primary keys.

Run the tests by doing:

py.test tests/

The models used in the tests live in a Django app in tests/testapp. If you add, remove, or make changes to those models run:

env DJANGO_SETTINGS_MODULE=tests.settings poetry run django-admin makemigrations testapp

and add the generated migrations.