django - Django Admin - save_model 方法忽略保存

Question

我正在尝试覆盖 django UserAdmin save_model 方法。在某些情况下，我想忽略保存数据，但它总是保存数据。我是不是错过了什么。这是我的代码

class MyUserAdmin(UserAdmin):

    def save_model(self, request, obj, form, change):

        attrs = request.POST

        role=attrs.getlist('userProfile_user-0-role',None)
        if change:
            if int(role[0]) == 1:
                super(MyUserAdmin, self).save_model(request, obj, form, change)
            else:
                messages.error(request, "Subscriptions cannot be changed.")
                # In this case I did not want save data

谢谢