Laravel获得独特的见解

Question

我在控制器上有以下代码：

$shops = Shop::withCount(['views' => function ($query) {
        $query->distinct('visitor');
}])->get();

我使用以下软件包：https://github.com/cyrildewit/eloquent-viewable 在表视图中，我有列访问者。为什么独特的行不通？

我得到关于结果的查询：

select `shops`.*, (select distinct count(*) from `views` where `shops`.`id` = `views`.`viewable_id` and `views`.`viewable_type` = 'App\Shop') as `views_count` from `shops` where `user_id` = 1 order by `id` asc limit 10 offset 0

为什么distinct不起作用？

我需要获取：count(distinct visitor)，但不需要distinct count(*)