未定义的属性：laravel API 的 stdClass::$id

Question

我在 Laravel 上使用 API 的查询构建器执行此操作

$shipments = DB::table('shipment_batches')

            ->select(

                "shipments.id as shipment_id",

                "shipments.fulfillment_id",

                "shipments.shipped_address_id",

                "shipments.courrier_id",

                "shipments.status",

                "shipments.is_intro",

                "shipments.is_express",

                "shipments.shipment_batch_id",

                "shipments.intro_shipment_date",

                "shipments.intro_shipped_at",

                "shipments.tracking_number",

                "shipments.is_gift",

                "shipments.ship_unit",

                "shipments.shipment_notes",

                "shipments.is_one_time_product",

                "shipments.one_time_product_shipment_date",

                "shipments.one_time_product_shipped_at",

                "shipments.shipment_options",

                "shipments.is_migrated",

                "shipments.migration_has_error",

                "shipments.in_process_date",

                "shipments.shipment_date_at",

                "shipments.link",

                )

            ->join('shipments', 'shipments.shipment_batch_id', '=', 'shipment_batches.id')

            ->join('fulfillments', 'fulfillments.id', '=', 'shipments.fulfillment_id')

            ->join('subscriptions', 'subscriptions.id', '=', 'fulfillments.subscription_id')

            ->whereMonth('shipment_batches.shipment_date', '>', date('m'))

            ->whereYear('shipment_batches.shipment_date', '=', date('Y'))

            ->where('subscriptions.user_id', $id)

            ->orderBy('shipment_batches.id', 'ASC')

            ->get();

我只是删除了其他数组返回值以简化集合。并在 API 上作为 json 返回之前添加hashed_id并padded_id修改结果

我收到这个错误

未定义的属性：stdClass::$id

是否可以从查询构建器中创建集合？如何？