Graphene Interface Example

graphene-interface.py

import graphene
from graphene_django.types import DjangoObjectType

class Customer(graphene.Interface):
    id = graphene.Int()
    email = graphene.String()
    name = graphene.String()
    first_name = graphene.String()
    last_name = graphene.String()
    phone = graphene.String()
    receive_notifications = graphene.Boolean()
    receive_update_emails = graphene.Boolean()

    @classmethod
    def resolve_type(cls, instance, context, info):
        if instance.is_anonymous():
            return AnonymousUserType
        return UserType


class AnonymousUserType(graphene.ObjectType):
    class Meta:
        interfaces = (Customer,)

    def resolve_shipping_destinations(self, args, context, info):
        return []

    def resolve_payment_methods(self, args, context, info):
        return []


class UserType(DjangoObjectType):
    name = graphene.String()

    class Meta:
        model = User
        interfaces = (Customer,)
        only_fields = ['id', 'email', 'name', 'first_name', 'last_name', 'phone', 'receive_notifications',
                       'receive_update_emails']

    def resolve_name(self, args, context, info):
        return self.get_full_name()