public function handle($event, $payload)
    {
        list($model) = $payload;
        
        // Check for matching input elements
        foreach (Request::input() as $key => $val) {
            if (preg_match('#^'.self::PREFIX.'(.+)#', $key, $matches)) {
                $this->updateRelationship($model, $matches[1]);
            }
        }
    }