将 Json 数组循环到数据库 Laravel？

Question

我有这样的 Json 数据：

$data = '[
    {
        "OrderId": "1038806370",
        "qtty": "1",
        "Item": "Strawberry 250 gr",
        "SKU": "20091"
    },
    {
        "OrderId": "1038806370",
        "qtty": "2",
        "Item": "Strawberry 130 gr",
        "SKU": "20092"
    },
    {
        "OrderId": "1038806370",
        "qtty": "1",
        "Item": "Strawberry 130 gr",
        "SKU": "20092"
    }
]';

我想使用 PHP Laravel 将 MySql 保存在我的数据库中，...

我想将数据从 json 保存到我的表中，有表 Order 值 [orderID,...] 和 OrderDetail 值 [orderID, SKU, Qty]

这是我在控制器中的代码

$order = json_decode($data, true);

foreach ($order as $ord) {
    $check = Order::where('orderid', $ord['OrderId'])->get();

    if (count($data) > 0) {
        OrderDetail::firstOrCreate([
            'order_id' => $ord['OrderId'],
            'sku_id' => $ord['SKU'],
            'qty' => $ord['qtty']
        ]);
    } else {
        Order::create([
            'orderid'=> $ord['OrderId'],
        ]);
       
        OrderDetail::firstOrCreate([
            'order_id' => $ord['OrderId'],
            'sku_id' => $ord['SKU'],
            'qty' => $ord['qtty']
        ]);
    }
}

但我没有得到我想要的，我得到 QTY 的 SKU 20091 是 2 但实际的 json 数据是 3

Answer 1

我不确定您为什么要计算 $data 而不是 $check 变量。不过，您也不需要 $check 变量。我会在下面重写你的代码。

$order = json_decode($data, true);

foreach ($order as $ord) {
    // use EXIST query to check if Order exists or not.
    if (Order::where('orderid', $ord['OrderId'])->exists())
        OrderDetail::firstOrCreate([
            'order_id' => $ord['OrderId'],
            'sku_id' => $ord['SKU'],
            'qty' => $ord['qtty']
        ]);
    } else {
        Order::create([
            'orderid'=> $ord['OrderId'],
        ]);

        OrderDetail::firstOrCreate([
            'order_id' => $ord['OrderId'],
            'sku_id' => $ord['SKU'],
            'qty' => $ord['qtty']
        ]);
    }
}

但您的 if/else 也可以使用 firstOrCreate() 方法删除。

$orders = json_decode($data, true);

foreach ($orders as $order) {
    // Get Order Model with orderid = $order['OrderId'] or create it if it doesn't exist
    $model = Order::firstOrCreate([
        'orderid'=> $order['OrderId']
    ]);
    // Get OrderDetail with provided SKU, qtty and orderid or create it if it doesn't exist. 
    OrderDetail::firstOrCreate([
        'order_id' => $model->orderid
        'sku_id' => $order['SKU'],
        'qty' => $order['qtty']
    ]);
}

你也可以内联。

$orders = json_decode($data, true);

foreach ($orders as $order) {
    OrderDetail::firstOrCreate([
        'order_id' => Order::firstOrCreate(['orderid'=> $order['OrderId']])->orderid,
        'sku_id'   => $order['SKU'],
        'qty'      => $order['qtty'],
    ]);
}