Laravel中数据透视表的访问索引

Question

有没有办法可以访问如下所示的数据透视表？？？

array:18 [
  "id" => 4
  "user_id" => 5
  "price" => 8659
  "created_at" => "2020-01-17 14:08:06"
  "updated_at" => "2020-01-17 14:08:06"
  "pivot" => array:5 [
    "purchase_id" => 6
    "product_id" => 4
    "quantity" => "13"
    "unit_price" => "3212"
    "discount" => "11.00"
  ]
]

我想更新Pivot 表，我尝试了如下方法

       foreach($request->products as $product) {
            $purchase->products()->updateExistingPivot($product['id'], [
                'unit_price' => $product['unit_price'],
                'quantity' => $product['quantity'],
                'discount' => $product['discount'],
            ]);

            // dd($product);
        }

但出现错误message: "Undefined index: unit_price"。

任何帮助，在此先感谢...

Answer 1

您的$product 中似乎没有unit_price 密钥，

尝试通过$product['pivot']调用它

$purchase->products()->updateExistingPivot($product['id'], [
                'unit_price' => $product['pivot']['unit_price'],
                'quantity' => $product['pivot']['quantity'],
                'discount' => $product['pivot']['discount'],
            ]);