Provided nutritionist data in user serializer

authentication/serializers.py

@@ -34,6 +34,14 @@ class UserAuthSerializer(serializers.ModelSerializer):
                 result['transaction_status'] = last_active_cart.transaction_status
                 result['cart_id'] = last_active_cart.id
 
+        result['nutritionist'] = None
+
+        if instance.nutritionist is not None:
+            result['nutritionist'] = {
+                'full_name_and_degree': instance.nutritionist.full_name_and_degree,
+                'phone_number': instance.nutritionist.phone_number
+            }
+
         return result
 
     class Meta: