CODEWITHSUNDEEP
javascriptlodash
Yeonghun
Yeonghun

Reputation: 410

lodash convert Object of Objects to array of objects including key in it

sorry about poor explanation on the title.

basically i want to know if there's better way or shorter code to do my job. i recently started using lodash library.

so,

i have an object of objects like following. 

   {
    key1:{ firstname: john, lastname: doe}, 
    key2:{ firstname: david, lastname: smith},
   }

eventually i wanna make them as following array of objects.

   [
    {ID: key1, firstname: john, lastname: doe },
    {ID: key2, firstname: david, lastname: smith}
   ]

and this is what i did. 

const ArrayOfObjects = [];
    _.each(ObjectsOfObjects, (value, key) => {
        ArrayOfObjects.push({
            UID: key,
            ...value,
        });
    })

Upvotes: 3

Views: 4573

Answers (2)

Ori Drori
Ori Drori

Reputation: 193077

Lodash's _.map() can iterate objects. The 2nd param passed to the iteratee function is the key:

const input = {
  key1:{ firstname: 'john', lastname: 'doe'}, 
  key2:{ firstname: 'david', lastname: 'smith'},
}

const result = _.map(input, (v, UID) => ({ UID, ...v }))

console.log(result)
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js"></script>

Upvotes: 2

CertainPerformance
CertainPerformance

Reputation: 371168

Use Object.entries and .map:

const input = {
  key1:{ firstname: 'john', lastname: 'doe'}, 
  key2:{ firstname: 'david', lastname: 'smith'},
}
const transformed = Object.entries(input).map(([key, obj]) => Object.assign(obj, { ID: key }));
console.log(transformed);

Upvotes: 0

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