/**
  * Define your route model bindings, pattern filters, etc.
  *
  * @param \Illuminate\Routing\Router $router
  */
 public function boot(Router $router)
 {
     parent::boot($router);
     /*
      * bindings
      */
     $router->bind('settings', function ($value) {
         return Setting::where('key', $value)->firstOrFail();
     });
 }