我有三个模型：Order、OrderItem和Product（为简单起见，仅示出关系）：
第一个
使用其各自的DB表：

orders: id, status, subtotal, total 
order_items: id, order_id, product_id, qty, price, total
products: id, name, slug, sku, description, price

我只有一个用于Order和Product的控制器，但我有用于所有3个控制器的资源：
第一个
当点击我的订单控制器时，我返回如下数据（在本例中用于显示订单）：

public function show(Order $order): JsonResponse
    {
        return (new OrdersResource($order->loadMissing('orderItems')))
            ->response()
            ->setStatusCode(Response::HTTP_OK);
    }

到此为止就这么走了，返回的顺序是这样的：

{
    "data": {
        "id": "20d9b0f3-2b32-45a7-8814-12c77210ad50",
        "type": "orders",
        "attributes": {
            "status": "new",
            "payment_type": "",
            "payment_transaction_no": "",
            "subtotal": 71000,
            "taxes": 0,
            "total": 71000,
            "items": [
                {
                    "id": 9,
                    "product_id": "444b0f3-2b12-45ab-3434-4453121231ad51",
                    "order_id": "20d9b0f3-2b32-45a7-8814-12c77210ad50",
                    "qty": 10,
                    "price": 200,
                    "total": 2000,
                    "created_at": "2022-11-05T16:26:07.000000Z",
                    "updated_at": "2022-11-05T16:28:02.000000Z"
                },
                {
                    "id": 10,
                    "product_id": "324b0f3-2b12-45ab-3434-12312330ad50",
                    "order_id": "20d9b0f3-2b32-45a7-8814-12c77210ad50",
                    "qty": 3,
                    "price": 23000,
                    "total": 69000,
                    "created_at": "2022-11-05T16:26:29.000000Z",
                    "updated_at": "2022-11-05T16:26:29.000000Z"
                }
            ],
            "created_at": "2022-11-05T16:26:07.000000Z",
            "updated_at": "2022-11-05T16:28:02.000000Z"
        }
    }
}

但现在我需要返回作为OrderItem的一部分的实际产品，而不仅仅是产品ID，因此我更新了我的资源以包括：'product' => new ProductsResource($this->whenLoaded('product')),
我资源最终看起来像这样：

public function toArray($request): array
    {
        return [
            'id' => $this->id,
            'order_id' => $this->order_id,
            'product' => new ProductsResource($this->whenLoaded('product')),
            'qty' => $this->qty,
            'price' => $this->price,
            'total' => $this->total,
            'created_at' => $this->created_at,
            'updated_at' => $this->updated_at,
        ];
    }

然而，我的响应中看不到产品，我错过了什么？这不是加载它的正确方式吗？我需要从我的控制器加载它吗？
谢谢

更新

我已经更新了OrderItem中的关系，现在它看起来如下所示：

public function product(): HasOne
    {
        return $this->hasOne(Product::class, 'id', 'product_id');
    }

其中，id指向products表中的id列，而product_id是order_item中的FK。
此时如果我做以下操作：

// just get any orderItem
$orderItem = OrderItem::first();
dd($orderItem->product);

我确实看到关系在工作，因为产品正在打印，但对象仍然不是API响应的一部分，这意味着在我的资源中，此行没有按预期工作：

'product' => new ProductsResource($this->whenLoaded('product')),

更新2

我更新了在资源中加载product的方式，使其成为以下两种方式之一：
第一个
但这会在已经嵌套的对象上生成一个嵌套对象，如下所示：

{
    "data": {
        "id": "20d9b0f3-2b32-45a7-8814-12c77210ad50",
        "type": "orders",
        "attributes": {
            "status": "new",
            "payment_type": "",
            "payment_transaction_no": "",
            "subtotal": 71000,
            "taxes": 0,
            "total": 71000,
            "items": [
                {
                    "id": 9,
                    "order_id": "20d9b0f3-2b32-45a7-8814-12c77210ad50",
                    "product": {
                        "id": 9,
                        "order_id": "20d9b0f3-2b32-45a7-8814-12c77210ad50",
                        "product_id": "f6bd3290-7748-49fa-8995-e0de47291fc9",
                        "qty": 10,
                        "price": 200,
                        "total": 2000,
                        "created_at": "2022-11-05T16:26:07.000000Z",
                        "updated_at": "2022-11-05T16:28:02.000000Z",
                        "product": {
                            "id": "f6bd3290-7748-49fa-8995-e0de47291fc9",
                            "barcode": "010101010101010101",
                            "name": "Test 5",
                            "slug": "test-5",
                            "sku": "t55te345c",
                            "description": "asd asd asd asd asd",
                            "type": "goods",
                            "category_id": 4,
                            "wholesale_price": 34,
                            "retail_price": 200,
                            "base_picture": null,
                            "current_stock_level": 0,
                            "active": 1,
                            "created_at": "2022-09-23T16:29:18.000000Z",
                            "updated_at": "2022-09-23T22:00:40.000000Z"
                        }
                    },
                    "qty": 10,
                    "price": 200,
                    "total": 2000,
                    "created_at": "2022-11-05T16:26:07.000000Z",
                    "updated_at": "2022-11-05T16:28:02.000000Z"
                }
    ]
   }
  }
}

请注意，product现在如何重新拥有来自items的数据