LARAVEL request befor select from DB

 public function show(markShowRequest $request)
{
    $stdNo = Input::get('stdNo');
    $input = $request->all();
   $students = DB::table('markviews')->where('stdNo',$stdNo)->get();        
   return view('markStudent.show',compact('students'));
}

i want to add $input as request to

$students = DB::table('markviews')->where('stdNo',$stdNo)->get();

to make request before search in DB

via Chebli Mohamed