public function index()
 {
     //
     $drills = Drill::all();
     $ret = [];
     $i = 1;
     $r = 0;
     foreach ($drills as $drill) {
         $i++;
         $ret[$r][] = $drill;
         if ($i == 5) {
             $i = 1;
             $r++;
         }
     }
     return response()->json($ret, 200);
 }
 public function clearAll()
 {
     $users = User::all();
     foreach ($users as $u) {
         $u->delete();
     }
     $drills = Drill::all();
     foreach ($drills as $d) {
         $d->delete();
     }
     $games = Game::all();
     foreach ($games as $g) {
         $g->delete();
     }
     $clubs = Club::all();
     foreach ($clubs as $c) {
         $c->delete();
     }
 }