How to replace or edit the lookup parameter in a django rest framework Router?

Question

I have set up a Django Rest Framework ModelViewSet for a Product model. The Product has a uuid4 primary key field. The API list views are working, but I can't access the detail views using the default router, I guess because the uuid4 primary key doesn't fit the pk integer regex the router expects? The error is a TypeError in python3.6/site-packages/rest_framework/viewsets.py:

retrieve() got an unexpected keyword argument 'pk'

From the router documentation, I believe I need a custom router, but I don't understand how to replace the {lookup} field from an integer pk regex to a uuid4 regex (?P<uuid>[a-f0-9]{8}-?[a-f0-9]{4}-?4[a-f0-9]{3}-?[89ab][a-f0-9]{3}-?[a-f0-9]{12}). I think the relevant part of the source code is here.

My present url config is as follows:

from .views.API.product import ProductViewSet
from django.conf.urls import include
from rest_framework.routers import DefaultRouter

router = DefaultRouter()
router.register(r'product', ProductViewSet, base_name='product')
urlpatterns += [
    url(r'^API/0.1/', include(router.urls)),
]

Answer 1

simply update your code to something like this:

class ProductViewSet(ModelViewSet):
    lookup_field = 'my_uuid_field'

lookup_field tells DRF to use this field instead of pk to get items