如何將嵌套的對象數組轉換為單個對象數組？

Question

我的api返回了此配置文件對象數組：

const profilesData = [
  {
    profile: { id: "26144385", some: "more", other: "misc" },
    photo_details: {
      photos: [{ small: "bar-1", medium: "baz-1" }]
    }
  },
  {
    profile: { id: "26144334", some: "even", other: "some more" },
    photo_details: {
      photos: [
        { small: "bar-2", medium: "baz-2" },
        { small: "fizz-2", medium: "buzz-2" }
      ]
    }
  }
];

我需要對其進行轉換，以便獲得單個profileWithPhotos數組，如下所示：

const profileWithPhotos = [
  {
    id: "26144385",
    some: "more",
    other: "misc",
    photos: [
      {
        small: "bar-1",
        medium: "baz-1"
      }
    ]
  },
  {
    id: "26144334",
    some: "even",
    other: "some more",
    photos: [
      {
        small: "bar-2",
        medium: "baz-2"
      },
      {
        small: "fizz-2",
        medium: "buzz-2"
      }
    ]
  }
];

到目前為止，我已經嘗試將解析分解為較小的函數：

const getProfiles = profilesData =>
  profilesData.map(profileData => profileData.profile);

const getSmallAndMediumPic = pic => ({ small: pic.small, medium: pic.medium });

const getPhotos = profilesData =>
  profilesData.map(profileData => profileData.photo_details.photos.map(getSmallAndMediumPic));

const profiles = getProfiles(profilesData);
const photos = getPhotos(profilesData);

const profileWithPhotos = [...profiles, { photos: photos }];

現在，我得到了這種對象數組：

​​​​​[ { id: '26144385', some: 'more', other: 'misc' },​​​​​
​​​​​  { id: '26144334', some: 'even', other: 'some more' },​​​​​
​​​​​  { photos: [ [Object], [Object] ] } ]​​​​​

...這不是我想要的。

這是上面代碼的工作jsbin

我想采摘並結合第一個提取的集合與第二個提取的集合。 我該怎么做呢？

Answer 1

您可以使用解構分配，並為數組的每個元素分配一個新對象。

 const profilesData = [{ profile: { id: "26144385", some: "more", other: "misc" }, photo_details: { photos: [{ small: "bar-1", medium: "baz-1" }] } }, { profile: { id: "26144334", some: "even", other: "some more" }, photo_details: { photos: [{ small: "bar-2", medium: "baz-2" }, { small: "fizz-2", medium: "buzz-2" }] } }], result = profilesData.map( ({ profile: { id, some, other }, photo_details: { photos } }) => ({ id, some, other, photos }) ); console.log(result); 

 .as-console-wrapper { max-height: 100% !important; top: 0; } 

或使用擴展語法...適用於即將發布的JS對象。 這讓BABEL感到擔心。

 const profilesData = [{ profile: { id: "26144385", some: "more", other: "misc" }, photo_details: { photos: [{ small: "bar-1", medium: "baz-1" }] } }, { profile: { id: "26144334", some: "even", other: "some more" }, photo_details: { photos: [{ small: "bar-2", medium: "baz-2" }, { small: "fizz-2", medium: "buzz-2" }] } }], result = profilesData.map( ({ profile, photo_details: { photos } }) => ({ ...profile, photos }) ); console.log(result); 

 .as-console-wrapper { max-height: 100% !important; top: 0; } 

Answer 2

我覺得簡單的map迭代就可以滿足您的需求。

const result = profilesData.map(data => {
  return {
    id: data.profile.id,
    some: data.profile.some,
    other: data.profile.other,
    photos: data.photo_details.photos
  }
})
console.log(result);

//result
[{
  id: "26144385",
  other: "misc",
  photos: {
     medium: "baz-1",
     small: "bar-1"
  }],
  some: "more"
}, {
  id: "26144334",
  other: "some more",
  photos: {
     medium: "baz-2",
     small: "bar-2"
  }, {
     medium: "buzz-2",
     small: "fizz-2"
  }],
  some: "even"
}]

Answer 3

您可以使用一些ES6參數解構和對象中的傳播語法來執行此操作。

 const profilesData = [{"profile":{"id":"26144385","some":"more","other":"misc"},"photo_details":{"photos":[{"small":"bar-1","medium":"baz-1"}]}},{"profile":{"id":"26144334","some":"even","other":"some more"},"photo_details":{"photos":[{"small":"bar-2","medium":"baz-2"},{"small":"fizz-2","medium":"buzz-2"}]}}] const result = profilesData.map(({profile, photo_details: {photos}}) => { return {...profile, photos} }) console.log(result) 

Answer 4

我只需要遍歷profilesData數組並創建一個新數組，即可使用所需的屬性來重建對象。 就像是..

var data = [];
for(var i=0;i<profilesData.length;i++){
    data[i] = profilesData[i].profile;
    data[i].photos = profilesData[i].photo_details.photos
}
console.log(data);

Answer 5

您可以將array#map和array#reduce與Object.assign()

 const profilesData = [ { profile: { id: "26144385", some: "more", other: "misc" }, photo_details: { photos: [{ small: "bar-1", medium: "baz-1" }] } }, { profile: { id: "26144334", some: "even", other: "some more" }, photo_details: { photos: [ { small:"bar-2", medium: "baz-2" }, { small: "fizz-2", medium: "buzz-2" } ] } } ], result = profilesData.map(o => Object.values(o).reduce((r,o) => Object.assign(r, o), {})); console.log(result); 

Answer 6

這很簡單：

profilesData.map(data => Object.assign({}, data.profile, { photos: data.photo_details.photos }));

或者，如果您僅針對最新環境，或者例如使用Babel進行轉譯，則可以通過參數解構和對象散布來使其更加簡潔：

profilesData.map(({profile, photo_details: {photos}}) => ({ ...profile, photos }));

您可以在下面的代碼片段中看到兩者都在起作用。

 const profilesData = [ { profile: { id: "26144385", some: "more", other: "misc" }, photo_details: { photos: [{ small: "bar-1", medium: "baz-1" }] } }, { profile: { id: "26144334", some: "even", other: "some more" }, photo_details: { photos: [ { small: "bar-2", medium: "baz-2" }, { small: "fizz-2", medium: "buzz-2" } ] } } ]; const profilesWithPhotos = profilesData.map(data => Object.assign({}, data.profile, { photos: data.photo_details.photos })); console.log(profilesWithPhotos); console.log('-----'); const profilesWithPhotos2 = profilesData.map(({profile, photo_details: {photos}}) => ({ ...profile, photos })); console.log(profilesWithPhotos2); 

 .as-console-wrapper{min-height:100%} 

Answer 7

好吧，似乎來晚了，但我認為這可以解決```

const transformedProfilesData = profilesData.reduce((array, object) => {
  const profile = {...object.profile}
  const photos = object.photo_details.photos.map(photo => photo)
  profile.photos = photos
  array.push(profile)
  return array
}, [])

```