public function OnLoadPageData()
 {
     require_once 'stoolball/competition-manager.class.php';
     $manager = new CompetitionManager($this->GetSettings(), $this->GetDataConnection());
     if ($this->season_id) {
         $manager->ReadById(null, array($this->season_id));
     } else {
         $manager->ReadById(array($this->competition_id));
     }
     $this->competition = $manager->GetFirst();
     $this->season = $this->competition->GetWorkingSeason();
     unset($manager);
     # If the competition was requested, redirect to the current season
     if ($this->competition_id) {
         http_response_code(303);
         header("Location: " . $this->season->GetMapUrl());
         return;
     }
     $this->has_map = count($this->season->GetTeams());
     # Get other seasons
     require_once 'stoolball/season-manager.class.php';
     $a_comp_ids = array($this->competition->GetId());
     $o_season_manager = new SeasonManager($this->GetSettings(), $this->GetDataConnection());
     $o_season_manager->ReadByCompetitionId($a_comp_ids);
     $a_other_seasons = $o_season_manager->GetItems();
     $this->competition->SetSeasons(array());
     foreach ($a_other_seasons as $season) {
         if ($season->GetId() == $this->season->GetId()) {
             $this->competition->AddSeason($this->season, true);
         } else {
             $this->competition->AddSeason($season, false);
         }
     }
 }