替换数组对象中的两个属性值并创建新数组

Question

*编辑我应该得到一个更清晰的问题，并提供更好的数据。

我需要获取一个现有的对象数组，替换依赖于两个不同id的名称，并用它们创建一个新的数组。

我的JSON：

const legendData = [{

     "assetManagerId": 11,
     "name": "AIM Derivatives",
     "fileTypeId": 1,
 {
     "assetManagerId": 11,
     "name": "AIM Derivatives",
     "fileTypeId": 2,
 },
 {
     "assetManagerId": 8,
     "name": "Barings",
     "fileTypeId": 2,
 },
 {
     "assetManagerId": 5,
     "name": "BlackRock",
     "fileTypeId": 1,
}]

我需要将AIM衍生品的名称更改为下面的名称，但是，请保持其余名称不变。

const = legendData[{
     "assetManagerId": 11,
     "name": "AIM Derivatives ODIN",
     "fileTypeId": 1,
 {
     "assetManagerId": 11,
     "name": "AIM Derivatives CMF",
     "fileTypeId": 2,
 },
 {
     "assetManagerId": 8,
     "name": "Barings",
     "fileTypeId": 2,
 },
 {
     "assetManagerId": 5,
     "name": "BlackRock",
     "fileTypeId": 1,
}]

我在下面的代码中完成了一半，然而，我不知道如何将两者结合起来。仅当fileTypeId为1而不是2时，以下内容才会更改。

const newArr = legendData.map(item => item.assetManagerId === 11 && item.fileTypeId === 1? {
            ...item, name: "AIM Derivatives ODIN"
            } : item)

console.log(newArr)       

Answer 1

您可以使用map。在进行映射时，您可以通过fileTypeId从包含所需名称的对象中获取所需名称：

​

let arr = [{
    "assetManagerId": 11,
    "name": "AIM Derivatives",
    "fileTypeId": 1,

  },
  {
    "assetManagerId": 11,
    "name": "AIM Derivatives",
    "fileTypeId": 2,
  }]
const names = {1: 'AIM Derivatives ODIN', 2:'AIM Derivatives CMF'}

const result = arr.map(({name, fileTypeId, ...rest}) => 
    ({name: names[fileTypeId], fileTypeId, ...rest}))
console.log(result)

​

更新：

​

let arr = [{    "assetManagerId": 11,    "name": "AIM Derivatives",    "fileTypeId": 1},{
    "assetManagerId": 11,    "name": "AIM Derivatives",    "fileTypeId": 2,
},
{
    "assetManagerId": 8,    "name": "Barings",    "fileTypeId": 2,
},
{
    "assetManagerId": 5,    "name": "BlackRock",    "fileTypeId": 1,
}]
const names = {'AIM Derivatives': { 1: 'AIM Derivatives ODIN', 2:'AIM Derivatives CMF'}}
const result = arr.map(({name, fileTypeId, ...rest}) =>
    ({
        name: names[name] ? names[name][fileTypeId] : name,
        fileTypeId,
        ...rest
    }))
console.log(result)

​

Answer 2

您可以创建字典并存储fileTypeId和相关文本

​

const legendData = [{
    "assetManagerId": 11,
    "name": "AIM Derivatives",
    "fileTypeId": 1,

  },
  {
    "assetManagerId": 11,
    "name": "AIM Derivatives",
    "fileTypeId": 2,
  }
]
const idMap = {
  1: "AIM Derivatives ODIN",
  2: "AIM Derivatives CMF"
}
   // check if the assetManagerId matches and if the `fileTypeId` is one of the key in dictionary
const newArr = legendData.map(item => item.assetManagerId === 11 && idMap[item.fileTypeId] ? {
  ...item,
  // if one of the key the get the relevant value of that key
  name: idMap[item.fileTypeId]
} : item)
console.log(newArr)

​

Answer 3

您可以尝试使用json配置，键是assetManagerId和fileTypeId，值是新名称。

​

const newNamesConfig = {
  11: {
    1: { name: 'AIM Derivatives ODIN' },
    2: { name: 'AIM Derivatives CMF' },
  },
}
const derivatesNames = [{
  "assetManagerId": 11,
  "name": "AIM Derivatives",
  "fileTypeId": 1,

},
{
  "assetManagerId": 11,
  "name": "AIM Derivatives",
  "fileTypeId": 2,
}];


const renamedArray = derivatesNames.map(derivate => Object.assign({}, derivate,newNamesConfig[derivate.assetManagerId][derivate.fileTypeId]));
  
console.log(renamedArray)

​