[Django]-Read_only field in django rest serializer with unique_together contraint

This is what the documentation of CurrentUserDefault says:

A default class that can be used to represent the current user. In
order to use this, the ‘request’ must have been provided as part of
the context dictionary when instantiating the serializer.

You can either do that or you can provide the email id passed in the context data in your views. Override the function get_serializer_context

def get_serializer_context(self):
    context = super(YourClass, self).get_serializer_context()
    context['email'] = request.user.email

    return context

in your views. Your view should be extended from GenericAPIView at some level of inheritance. Now in your serializer, override your __init__ and get your email data.

def __init__(self, instance = None,  data = serializers.empty, *args, **kwargs):
    self.email = kwargs['context']['email']

Now you can use that in your serializer.

Please check solution 2 from this answer

The code can be:

class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = ('id', 'email',)
        extra_kwargs = {
            'email': {'read_only': True},
        }


    def create(self, validated_data):
        """Override create to provide a email via request.user by default."""
        if 'email' not in validated_data:
            validated_data['email'] = self.context['request'].user.email

        return super(UserSerializer, self).create(validated_data)

hope it help 🙂