Question

最近，我一直在学习如何从数组中检索对象，并且有相当一部分将对象数组转换为对象的单一对象，但是我无法绕过这个对象！

dataOfCars.js ：

const dataOfCars = [
  {
    id: "car1",
    owner: { license: "license001", name: "driver1" },
    mechanic: [
      {
        id: "mechanic1",
        owner: { license: "license001", name: "driver2" }
      }
    ]
  },
  {
    id: "car2",
    owner: { license: "license021", name: "driver2" },
    mechanic: []
  },
  {
    id: "car3",
    owner: { license: "license002", name: "driver2" },
    mechanic: [
      {
        id: "mechanic1",
        owner: { license: "license002", name: "driver2" }
      }
    ]
  }
];
module.exports = dataOfCars;

我知道有几个关于此的示例，但是我期望的输出是完全不同的，因为它涉及嵌套对象：

{
  cars : {
      idOrder : {
          "car1" : {
              id : "car1",
              owner : "owner1",
              mechanic : ["mechanic1", "mechanic2"]
          },
          ...
      },
      result : ["car1", "car2", ...]
  },
  mechanics : {
      idOrder : {
          "mechanic1" : {
              id : "mechanic1",
              owner : "driver2",
          },
          ...
      },
      result : ["mechanic1", ...]
  },
  owners : {
      idOrder : {
          "driver1" : {
              license : "license001",
              name: "driver1",
          },
          ...
      },
      result : ["driver1", "driver2", ...]
  }
}

我在“沙箱”上试了一下：https://codesandbox.io/s/old-morning-hx9m1。我使用了Object.assign({}, ...dataOfCars)，但是它只对整个数组进行'spreads'，因此仅按每个实体返回最终元素。这是 index.js 中的代码：

import dataOfCars from "./data.js";
import { normalize, schema } from "normalizr";

const ownerSchema = new schema.Entity("owners");

const mechanicSchema = new schema.Entity("mechanics", {
  mechanic: ownerSchema
});

const carSchema = new schema.Entity("cars", {
  owner: ownerSchema,
  mechanics: [mechanicSchema]
});

/* This method somehow returns the very final element */
const objectPost = Object.assign({}, ...dataOfCars);

const normalizedPost = normalize(objectPost, carSchema);

// The normalized object returning the 2/3 expected entities
console.log(normalizedPost);

我还是ES6的新手，我很想知道这最终如何实现！感谢您的提前帮助！

将对象数组转换为对象对象

0 个答案: