public function index(Student $Student, Request $request)
 {
     $students = $Student->orderBy('name', 'asc');
     if ($request->has('name')) {
         $students->where(function ($query) {
             $query->orWhere('name', 'LIKE', '%' . request('name') . '%');
             $query->orWhere('username', 'LIKE', '%' . request('name') . '%');
         });
     }
     $students = $students->paginate(30);
     foreach ($students as $student) {
         $student->photo_medium = asset($student->photo->url('medium'));
         $student->code = $student->code;
     }
     return $students;
 }