1.修改AreaInfo模型类

class AreaInfo(models.Model):#verbose_name设定字段列标题atitle = models.CharField(verbose_name='标题', max_length=20)# 关系属性aparent = models.ForeignKey('self', on_delete=models.CASCADE, null=True, blank=True)# class Meta:#     db_table='areainfo'def __str__(self):return self.atitledef title(self):return  self.atitle#设定title方法排序的字段title.admin_order_field='atitle'#设定title方法的显示名称title.short_description='地区名称'def parent(self):if self.aparent is None:return ''return self.aparent.atitleparent.short_description='父级地区'

2.在admin.py里面增加AreaInfo的模型管理类

class AreaInfoAdmin(admin.ModelAdmin):#每页显示数目list_per_page = 3#显示列表里面可以添加方法list_display = ['id', 'atitle','title','parent']#列表下方增加操作下拉框actions_on_bottom = True#列表框上面没有下拉列表框actions_on_top = False#右侧的过滤器list_filter = ['atitle']# 列表页上面的搜索框search_fields = ['atitle']admin.site.register(AreaInfo,AreaInfoAdmin)

3.后台效果如图