重写代码：加入if change 和logger

    def save_model(self, request, obj, form, change):if change:print('self',self)print('request',request)print('obj',obj)print('form',form)print("form.cleaned_data['project_name']",form.cleaned_data['project_name'])print('change',change)logger.info("%s %s modified the data of %s " % (datetime.now(),request.user.username, obj.project_name))super().save_model(request, obj, form, change)

效果：