Adding the Login Feature

We are now sure that the endpoint behaves as we wish. The next step is adding the login endpoint following the same process: writing the serializer and the viewset, and then registering the route.

The login feature will require the email or the username with the password. Using the djangorestframework-simplejwt package, which provides a serializer called TokenObtainPairSerializer, we’ll write a serializer to check for user authentication but also return a response containing access and refresh tokens. For this, we will rewrite the validate method from the TokenObtainPairSerializer class. Inside the core/auth/serializers directory, create a new file called login.py (this file will contain LoginSerializer, a subclass of TokenObtainPairSerializer):