replacing the key value with another property in array of objects

Question

merging array with object and returning an array with all the properties with array of object value or null

let object = {
  keys: {
    test1: {label: "Test_1"},
    test2: {label: "Test_2"},
    test3: {label: "Test_3"}
  }
}

let data = [{test1: "1", test2: "2", default:"123134" }, {test1: "1", test2: "2", default:"123134"}, {test1: "1", test3: "3"}, {test3: "3"}]

I am expecting the below array of objects

let expectedArray = [{Test_1: "1", Test_2: "2", Test_3: null ,default:"123134" }, {Test_1: "1", Test_2: "2", Test_3: null,  default:"123134"}, {Test_1: "1", Test_3: "3", Test_2:null }, {Test_3: "3", Test_1: null, Test_2: null}]

Tried below snippet

let res = data.map(o => {
  let obj = {}
  let c = Object.keys(o).forEach(aa => {
      obj[object.keys[aa].label] = o[aa]
  })
  return obj
})

Any help appreciated

He mean that what have you tried so far and where have you struck? — Maheer Ali
– Maheer Ali, Commented May 27, 2019 at 15:17
{Test 1: "1", Test 2: "2", Test 3: null ,default:"123134" } Is not a valid object — Charlie
– Charlie, Commented May 27, 2019 at 15:19

Nina Scholz · Accepted Answer · 2019-05-27 15:56:52Z

1

You could replace existent key of object and rebuild new objects.

var object = { keys: { test1: { label: "Test 1" }, test2: { label: "Test 2" }, test3: { label: "Test 3" } } },
    data = [{ test1: "1", test2: "2", default: "123134" }, { test1: "1", test2: "2", default: "123134" }, { test1: "1", test3: "3" }, { test3: "3" }],
    templates = Object.values(object.keys).map(({ label }) => ({ [label]: null })),
    result = data.map(o => Object.assign(
        {},
        ...templates,
        ...Object
            .entries(o)
            .map(([k, v]) => ({ [k in object.keys ? object.keys[k].label : k]: v }))
    ));

console.log(result);

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

edited May 27, 2019 at 15:56

answered May 27, 2019 at 15:27

Nina Scholz

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2 Comments

Beginner Over a year ago

i need to get all the keys, the expected array of each object consist of every key. Can you check the expectedData in the question

Beginner Over a year ago

i am trying update the structure in a different way, can you help me on this stackoverflow.com/questions/56339879/…

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