javascript - 在node.js中合并具有不同格式的多个对象

Question

我创建以下对象，

products = [
    {id:1, name: a},
    {id:2, name: b},
]

prices = [
    {id:1, month:1, price:1},
    {id:1, month:2, price:1},
    {id:2, month:1, price:1},
    {id:2, month:2, price:1},
]

所以我希望输出作为产品价格，

product_prices = [
    {id:1, name: a, prices: [{id:1, month:1, price:1},{id:1, month:2, price:1}]}, 
    {id:2, name: b, prices: [{id:2, month:1, price:1},{id:2, month:2, price:1}]},
]

下面是我尝试的代码

let subscriptionProductWithPrices = []


    subscriptionProducts.forEach(x => {
      subscriptionProductMonthPrices.forEach(y => {
        if (x.sub_product_id === y.sub_product_id) {
          subscriptionProductWithPrices = [
            {
              id: x.sub_product_id,
              name: x.sub_product_name,
              unit_id: x.facility_units_name,
              price: x.total_price,
              quantity: x.sub_product_quantity,
              recurring: x.sub_product_recurring,
              in_agreement: x.sub_product_in_agreement,
              start_date: x.sub_product_start_date,
              end_date: x.sub_product_end_date,
              prices:
                subscriptionProductMonthPrices


            }
          ]
          return subscriptionProductWithPrices
        }
      })
    })

此代码仅返回所有价格的最后一个产品 ID，但我希望输出如下，

    product prices [{id:1, name: a, prices[{{id:1, month:1, price:1},{id:1, month:2, price:1}]}, {id:2, name: b, prices[{{id:2, month:1, price:1},{id:2, month:2, price:1}]}]

谁能帮帮我？

Answer 1

@Nithin 你的代码很好，但它试图将 filtered price 数组 插入 product.prices 数组，这会将结果数组转换为数组而不是数组目的。所以一个简单的修改就会产生魔力。

这是它的优化代码。

let products = [{id:1, name: 'a'}, {id:2, name: 'b'}];
let prices = [{id:1, month:1, price:1},{id:1, month:2, price:1}, {id:2, month:1, price:1}, {id:2, month:2, price:1}];
products.map(prod=>{
// filter returns an array which can be directly assigned to prices
  prod.prices=prices.filter(pric=>pric.id===prod.id);
});
//Print the result stored in products with its corresponding prices
console.log(products);