Cacher is the code snippet organizer for pro developers

/**
     * return all Delivery that was pickup
     * @param $query
     * @param null $user_id
     * @return mixed
     */
    public function scopePickupStatus($query, $user_id=null)
    {
        $status = DeliveryStatus::IN_PROGRESS;

        return $query->whereHas(
            'statuses',
            function ($query) use ($status, $user_id) {
                $query->where('name', $status);

                if (!empty($user_id)) {
                    $query->where('causer_id', $user_id);
                }
            }
        );
    }