class AccountAdmin(admin.ModelAdmin):
    def save_model(self, request, obj, form, change):
        obj.security = get_random_code(10)
        obj.password = get_password(obj.password, obj.security)
        obj.save()
        Token.objects.create(user=obj)

admin.site.register(Account, AccountAdmin)

save_model()方法里这么多参数用来干什么，还是默认的？
看了下调用，根本就没有传入这么多值嘛。