obj = self.get_object()
for data_field, model_field in fields.items():
setattr(obj, model_field, data.get(data_field, getattr(obj, model_field)))
obj = self.get_object()
for data_field, model_field in fields.items():
setattr(obj, model_field, data.get(data_field, getattr(obj, model_field)))