Laravel: How to get custom sorted eloquent collection using whereIn method

Question

I have an array of product ids against which I need to retrieve the model collection. The array is something like this:

$ids = array(9, 2, 16, 11, 8, 1, 18);         


        

Answer 1

Use Field() function of mysql (If you are using mysql database) with DB::raw() of laravel something like

$products = Product::whereIn('id', $ids)
    ->orderBy(DB::raw("FIELD(id,".join(',',$ids).")"))
    ->get();

Field() returns the index position of a comma-delimited list