With Laravel/Lumen eloquent I can get count relations like this:
User::withCount('views')->get();
this will use SQL
select `users`.*, (select count(*) from `views` where `users`.`id` = `views`.`user_id`) as `views_count` from `users`
and return all models with views_count attribute, great.
But I need these views counted with unique IP column. In this query I could simple replace count(*) with count(DISTINCT ip) like this:
select `users`.*, (select count(DISTINCT ip) from `views` where `users`.`id` = `views`.`user_id`) as `views_count` from `users`
and in phpMyAdmin it returns good results. But how achieve this in Laravel eloquent? I cannot find any way to use custom column for count. I can pass array with query function like this:
User::withCount(['views' => function ($q) { // what there? }])->get();
but now I can pass only where conditions, not use Distinct in any way.
I know I can first get models, and then foreach with distinct and count or groupby but I need to keep this single query, fast and simple. And if I can easy achieve this in raw SQL then I also should do this in Laravel somehow. I can use some custom eloquent method if required because I will use this unique count in many places in applications.
So short question - how to combine withCount and Distinct?
PS I also tried to use distinct or groupBy on on model's relation level (on hasMany) but this does not work.
User::withCount('views', function($query) {
$query->select(DB::raw('count(distinct(ip))'));
})->get();
Solution for Laravel 8.x
User::withCount(['views as views_count' => function($query) {
$query->select(DB::raw('count(distinct(ip))'));
}])->get();
Note: Do not use selectRaw
.
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