laravel - 添加订单 Laravel

Question

我正在向数据库添加订单。它的工作原理如下:单击“订购”时，会在 Order 表中创建订单，同时产品项目也会通过 order_id 外键添加到 OrderItem 表中。但我不知道如何获取order_id，因为它是同时添加的，并且Order id是递增的。

public function save(array $data, int $id = null){
    $idCurrent = Auth::id(); 
    $orderItems = $data['orderItems'];

    //add to Order
    Order::updateOrCreate(
        [
            'id' => $id
        ],
        [
            'user_id' => $idCurrent,
            'shipping_fee' => $data['shipping_fee'],
            'total' => $data['total'],
            'payment' => $data['payment'],
            'status_id' => 1,
        ]
    );

    //add to OrderItem
    foreach($orderItems as $item){
        OrderItem::Create([
            'order_id' => 222,   //=> ?????????????
            'product_id' => $item -> product_id,
            'quantity' => $item->quantity,
        ]);
    }
    return true;
}

Answer 1

 $order = Order::updateOrCreate(
    [
        'id' => $id
    ],
    [
        'user_id' => $idCurrent,
        'shipping_fee' => $data['shipping_fee'],
        'total' => $data['total'],
        'payment' => $data['payment'],
        'status_id' => 1,
    ]
);

//add to OrderItem
foreach($orderItems as $item){
    OrderItem::Create([
        'order_id' =>$order->id
        'product_id' => $item -> product_id,
        'quantity' => $item->quantity,
    ]);
}
return true;