Laravel Eloquent, select only rows where the relation exists
According to Laravel's Eloquent documentation for querying relations (look for the "Querying Relationship Existence" subheading), this should work:
User::has('comments')->paginate(20);
Flip your thinking upside down and I think that you can do it.
$userIds = Comment::distinct()->select('user_id')->groupBy('user_id')->get();You may not need the groupBy() but that should get you started towards a way to do it.
Then you should be able to iterate through each like so:
foreach($userIds as $id) { $user = $id->user; //$id is technically a Comment instance so you can // call the methods on that model echo $user->name;}