laravel skip events on update

    protected static function boot()
    {
        parent::boot();

        static::saved(function(Discount $discount) {
            $condition_name = "";
            foreach ($discount->conditions as $condition) {
                $condition_name .= $condition["name"]. ' ';
            }
            $dispatcher = static::$dispatcher;
            static::unsetEventDispatcher();
            $discount->update(['condition' => trim($condition_name)]);
            static::setEventDispatcher($dispatcher);
        });
    }