如何将对象与 Laravel 中的许多项目同步

How do I sync an object with many items in Laravel

我在 Laravel 中有这个:

form: {
    id: null,
    sale_number: 2,
    client: null,
    products: [
        { product_id:"",description: "", quantity: null, price: null }
    ],
},`

如果form{}是模型中的请求,如何同步多个产品? 我有 pivot table product_sale 以及额外的字段数量和价格。

我试过了...

$items =  $request->products;
$new= [];
foreach( $items as $key => $item){
    $new[$item['product_id']]= array('quantity' => 0,'price'=>0);
}
$sale->products()->sync($new);

作为示例,但无法让每个产品的 product_id 同步。

The error says: "Illegal string offset 'product_id'"

非常感谢。

1) create your sale

2) create your products

3) sync them

像这样:

/** @var array $data */
$data = $request->all();

// extract products from the input array
$products = array_get($data, 'products');
unset($data['products']);

$saleModel = \DB::transaction(function() use ($data, $products) {
    $sale = SaleModel::create($data);
    $productModels = [];
    foreach($products as $product) {
        $productModel = ProductModel::create($product);
        $productModels[$productModel->id] = $productModel;
    }

    $productIds = array_keys($productModels);
    $sale->products()->sync($productIds);

    return $sale->fresh();
});