Ларавел найдет много
$models = Model::findMany([1, 2, 3]);
Kasmin Nicko
$models = Model::findMany([1, 2, 3]);App\Comment::find([1,2,3])->posts()->where('category', 3)->get()App\Comment::find(1)->posts()->where('category', 3)->get()App\Comment::whereIn('id', [1, 2, 3])->with(['posts' => function($q) {
$q->where('category', 3);
}])->get();