core: Add Token identifier as sudo-primary key

passbook/core/api/tokens.py

@@ -0,0 +1,22 @@
+"""Tokens API Viewset"""
+from rest_framework.serializers import ModelSerializer
+from rest_framework.viewsets import ModelViewSet
+
+from passbook.core.models import Token
+
+
+class TokenSerializer(ModelSerializer):
+    """Token Serializer"""
+
+    class Meta:
+
+        model = Token
+        fields = ["pk", "identifier", "intent", "user", "description"]
+
+
+class TokenViewSet(ModelViewSet):
+    """Token Viewset"""
+
+    queryset = Token.objects.all()
+    lookup_field = "identifier"
+    serializer_class = TokenSerializer