Make a group by with a where in statement Laravel - laravel

Question

I am writing a little script to load an Attendee_logs, based that counts the total of prints for based on the hour.
First I load the id's from the attendees
$allAttendees->pluck('id')->implode(',')
So I get 389832, 321321 from this (this are the id's from the attendees, based on a group).
Now I want to group them by the hour.
But I cannot find out how I add the whereIn statement
$badgesPrintedByDate = DB::table('Attendee_logs')->select(DB::raw('hour(created_at)'), DB::raw('COUNT(id)'))->whereIn('id', [$allAttendees->pluck('id')->implode(',')])->groupBy(DB::raw('hour(created_at)'));
When I do it like this, I get an empty result.
But when I remove the whereIn I get a result.
So my question, How can I count the rows based on the Hour and where I also give the ID's with it :)?

Answer 1

I think this is gonna work:
$badgesPrintedByDate = DB::table('Attendee_logs')->select(DB::raw('hour(created_at)'), DB::raw('COUNT(id)'))->whereIn('id', $allAttendees->pluck('id')->all())->groupBy(DB::raw('hour(created_at)'));
Instead of saying:
$allAttendees->pluck('id')->all()
Which returns an array of ids, you can also say:'
$allAttendees->pluck('id')->values()
Or:
$allAttendees->pluck('id')->toArray();