xadmin 添加自定义权限

1.设置一个代理模型

# 普通模型
class Goods(models.Model):
    pass

# 代理模型
class ClaimGoods(Goods):
    class Meta:
        verbose_name = "代理模型"
        verbose_name_plural = verbose_name
        proxy = True  # 设置为True 否则会重新注册一张数据表

2.注册模型

class ClaimGoodsAdmin(GoodsInfoModelAdmin):
    # reversion_enable = True
    actions = [ClaimAction, ]

    def get_list_queryset(self):
        queryset = super().get_list_queryset()
        queryset = queryset.filter(belonger__isnull=True)
        return self.level_queryset(queryset)

    def get_permission_codename(self, action, opts):
        """
        Return the codename of the permission for the specified action.
        """
        return '%s_%s' % (action, opts.model_name)

    def has_view_permission(self, obj=None):
        flag = super(ClaimGoodsAdmin, self).has_view_permission(obj)
        view_codename = self.get_permission_codename('view', self.opts)  # 查看权限代码
        change_codename = self.get_permission_codename('change', self.opts)  # 修改权限代码
        del_codename = self.get_permission_codename('delete', self.opts)  # 删除权限代码
        add_codename = self.get_permission_codename('add', self.opts)  # 添加权限代码
        print(view_codename, del_codename, add_codename, change_codename)
        return flag


xadmin.site.register(ClaimGoods, ClaimGoodsAdmin)

2.因为代理模型Xadmin不会自动识别权限(有时候迁移一下数据库就会自动识别)，所以需要手动添加

　　1.首先查询权限代码

# 在注册的时候重写这两个方法
    def get_permission_codename(self, action, opts):
        """
        Return the codename of the permission for the specified action.
        """
        return '%s_%s' % (action, opts.model_name)

    def has_view_permission(self, obj=None):
        flag = super(ClaimGoodsAdmin, self).has_view_permission(obj)
        view_codename = self.get_permission_codename('view', self.opts)  # 查看权限代码
        change_codename = self.get_permission_codename('change', self.opts)  # 修改权限代码
        del_codename = self.get_permission_codename('delete', self.opts)  # 删除权限代码
        add_codename = self.get_permission_codename('add', self.opts)  # 添加权限代码
        print(view_codename, del_codename, add_codename, change_codename)
        return flag

　　2.在后台添加权限(代码名称我改了没效果，会跟父类模型权限名称重名，不知道怎么解决，不过权限控制是可以正常实现的)