from django.db import models
created = models.DateTimeField(auto_now_add(Some more field)from django.contrib import admin
class QuestionAdmin(admin.ModelAdm
我添加了一个布尔字段,其计算时间如下所示: if self.inactive_to and self.available_until:else:is_active.short_description = 'Available'但是,如果我尝试将它添加到"list_filter“中,就会得到错误"'RealtyAdmin.list_f