我想使用同步方法通过数据透视 ID 更新订单产品，因为在我的场景中订单可以有多个具有相同 ID 的产品，并且我想更新我调用其数据透视 ID 的产品并删除其他我未更新的产品，但你从同步语法知道它接受产品的 id。
示例
这就是将产品附加到订单时我的正文和数据透视表的样子
{
"products": [
{
"product_id": 1,
"color": "red",
"quantity": 2
},
{
"product_id": 1,
"color": "black",
"quantity": 10
},
{
"product_id": 2,
"color": "black",
"quantity": 1
}
]
}
| id | order_id | 产品ID | 颜色 | 数量 |
|---|---|---|---|---|
| 1 | 1 | 1 | 红色 | 2 |
| 2 | 1 | 1 | 黑色 | 10 |
| 3 | 1 | 2 | 黑色 | 1 |
更新订单产品时
{
"products": [
{
"id" : 1,
"product_id" :1 ,
"color": "blue",
"quantity": 12
},
{
"id" : 3,
"product_id" :2,
"color": "blue",
"quantity": 5
}
]}
我希望我的桌子是什么样子
| id | order_id | 产品ID | 颜色 | 数量 |
|---|---|---|---|---|
| 1 | 1 | 1 | 蓝色 | 12 |
| 3 | 1 | 2 | 蓝色 | 5 |
但是得到了这个预期的错误
"message": "SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '1' for key 'PRIMARY' (SQL: insert into `order_product` (`color`, `created_at`, `id`, `order_id`, `product_id`, `quantity`, `size`, `updated_at`) values (blue, 2022-07-04 21:38:25, 7, 3, 1, 12, S, 2022-07-04 21:38:25))"
订单控制器
public function update(AdminUpdateOrderRequest $request, $id)
{
$orderValidated = $request->validated();
$order = Order::findOrFail($id);
$order->update($orderValidated);
if (isset($orderValidated['products'])) {
$order->products()->sync($orderValidated['products']);
}
DB::table
return OrderResource::make($order)->additional([
'success' => true,
]);
}
订单产品迁移
Schema::create('order_product', function (Blueprint $table) {
$table->id();
$table->foreignId('order_id')->nullable()->constrained('orders')->onUpdate('cascade');
$table->foreignId('product_id')->nullable()->constrained('products')->onUpdate('cascade');
$table->integer('quantity')->nullable();
$table->string('color')->nullable();
$table->timestamps();
});
有什么想法可以解决我的问题吗？
您需要在不属于多个关系的情况下处理此问题，并且必须创建一个中间或枢轴模型。
class OrderProduct extends Model { // optional belongs to order and product method protected $fillable = [ 'product_id', 'order_id', 'color', 'quantity' ]; }并且需要更改订单和产品型号（如果不用则产品型号可选）
class Order extends Model { public function order_products() { return $this->hasMany(OrderProduct::class); } }在你的控制器更新方法中
// 假设你的请求结构是
[ 'id' => 1, // Order id, 'order_attribute_1', // Any of your order model attribute 'order_attribute_2', // Any of your order model attributes 'products' => [ [ 'id' => null, // id of the order_product table so, null cause is a new added product 'order_id' => 1, // id of order 'product_id' => 1// id of product 'color' => 'blue', 'quantity' => 12 ], [ 'id' => 1, // id of the order_product table so, has id cause are you updating an existent product in the order 'order_id' => 1, // id of order 'product_id' => 1// id of product 'color' => 'blue', 'quantity' => 5 ] ] ]您需要创建自己的同步方法
public function update(AdminUpdateOrderRequest $request, $id) { $orderValidated = $request->validated(); $order = Order::findOrFail($id); $order->update($orderValidated); // start simulation of sync method $new_order_products = []; // id of order_product to preserve $order_products_to_keep = []; // I hope you have the corresponding products validation on your request class foreach ($request['products'] as $request_product) { // need to create new product in order if (empty($request_product['id'])) { $new_order_products[] = [ 'product_id' => $request_product['product_id'], 'order_id' => $request_product['order_id'], 'color' => $request_product['color'], 'quantity' => $request_product['quantity'] ] } else { // find the order_order product register $order_product = OrderProduct::find(request_product['id']); // update all except the order id $order_product->update([ 'product_id' => $request_product['product_id'], 'color' => $request_product['color'], 'quantity' => $request_product['quantity'] ]); // as exists this order_product will be preserved $order_products_to_keep[] = $order_product->id; } } // calculate the order_products to delete (if not present means that needs to be deleted) foreach ($order->order_products as $order_product) { if (!in_array($order_products_to_keep, $order_product->id)) { $order_product->delete(); } } // mass insertion of new order_products $order->order_products()->createMany($new_order_products); DB::table return OrderResource::make($order)->additional([ 'success' => true, ]); }我希望这对您有帮助，并且您可能需要使用事务来防止错误，并且添加相应的验证