Perform query with join and comma separated values in column in Laravel

$docomuntOrders = \DB::table("orders")
            ->select("orders.*",\DB::raw("GROUP_CONCAT(documents.name) as docname"))
            ->leftjoin("documents",\DB::raw("FIND_IN_SET(documents.id,orders.file_id)"),">",\DB::raw("'0'"))
            ->where('user_id',getCurrentUser()->user_id)
            ->groupBy("orders.id")
            ->paginate(10);