public function edit(Training $training)
 {
     $team = Team::find(config('mls.team_id'));
     $playerList = Player::where('team_id', $team->id)->get();
     $visitMap = ['' => ''] + Stat::$visitList;
     $visitList = TrainingVisitRepository::getActiveTrainingVisits($training->id);
     $visitList = $visitList->lists('visit', 'player_id');
     return view('backend.training_visits.edit')->with('playerList', $playerList)->with('visitList', $visitList)->with('training', $training)->with('visitMap', $visitMap);
 }