/**
  * get province list by basin
  * @return mixed
  */
 public function provincesByBasin()
 {
     $basin = Input::get('basin');
     $provinces = array();
     if (is_array($basin)) {
         foreach ($basin as $b) {
             $provinces = array_merge($provinces, TeleStation::provincesByBasin($b));
         }
     } else {
         $provinces = array_merge($provinces, TeleStation::provincesByBasin($basin));
     }
     return Response::json($provinces);
 }