office_updates.py

class OfficeUpdateUserSerializer(serializers.Serializer):
  # http://www.kalzumeus.com/2010/06/17/falsehoods-programmers-believe-about-names/
  id = serializers.UUIDField(null=True)
  first_name = serializers.CharField()
  last_name = serializers.CharField()
  email = serializers.EmailField()
  role = serializers.CharField(choices=User.ROLES)
  active = serializers.BooleanField(default=True)
  
class OfficeUpdateSerializer(serializers.Serializer):
  name = serializers.CharField()
  custom_domain = DomainField(null=True)
  users = OfficeUpdateUserSerializer(many=True)
  
@api_view(['POST'])
def update_office(request, office_id):
  office = get_object_or_404(Office, pk=office_id)
  serializer = OfficeUpdateSerializer(data=request.data)
  serializer.is_valid(raise_exception=True)
  office.name = serializer.validated_data['name']
  office.custom_domain = serializer.validated_data['custom_domain']
  
  users = []
  for validated_user in serializer.validated_data['users']:
    user_data = {
      "first_name": user['first_name'],
      "last_name": user['last_name'],
      "role": user['role'],
      "active": user['active'],
    }
    if validated_user['id']:
      user, _ = User.objects.update_or_create(
        pk=user.pop('id'),
        defaults=user_data,
      )
    else:
      user = User.objects.create(**user_data)
  office.users = users
  office.save()
  outgoing_serializer = OfficeSerializer(instance=office)
  return Response(outgoing_serializer.data, status=200)