/**
  * Call the "before" filters for the controller.
  *
  * @param  \Nova\Routing\Controller  $instance
  * @param  \Nova\Routing\Route  $route
  * @param  \Nova\Http\Request  $request
  * @param  string  $method
  * @return mixed
  */
 protected function before($instance, $route, $request, $method)
 {
     foreach ($instance->getBeforeFilters() as $filter) {
         if ($this->filterApplies($filter, $request, $method)) {
             // Here we will just check if the filter applies. If it does we will call the filter
             // and return the responses if it isn't null. If it is null, we will keep hitting
             // them until we get a response or are finished iterating through this filters.
             $response = $this->callFilter($filter, $route, $request);
             if (!is_null($response)) {
                 return $response;
             }
         }
     }
 }
 /**
  * Call the "before" filters for the controller.
  *
  * @param  \Nova\Routing\Controller  $instance
  * @param  \Nova\Routing\Route  $route
  * @param  \Nova\Http\Request  $request
  * @param  string  $method
  * @return mixed
  */
 protected function before($instance, $route, $request, $method)
 {
     foreach ($instance->getBeforeFilters() as $filter) {
         if ($this->filterApplies($filter, $request, $method)) {
             $response = $this->callFilter($filter, $route, $request);
             if (!is_null($response)) {
                 return $response;
             }
         }
     }
 }