Ramda - how to add new property to objects in array

Question

I am trying to add a new property to each object in the array. My test array:

const array = [
  {
    "name": 'Test'
  },
  {
    "name": 'Test2'
  }
]

I tried to use R.assoc('selected', false, array); but it didn't work as expected. As a result, I would like to get:

const array = [
  {
    "name": 'Test',
    "selected": false
  },
  {
    "name": 'Test2',
    "selected: false
  }
]

Any help will be appreciated

Ori Drori · Accepted Answer · 2021-03-31 23:07:19Z

3

R.assoc works by making a shallow clone of an object, and setting/updating a property. In this case, you need to handle an array of objects. Use R.map to iterate the array, and create a new array with transformed cloned objects by applying R.assoc:

const fn = R.map(R.assoc('selected', false));

const array = [{"name":"Test"},{"name":"Test2"}];

const result = fn(array);

console.log(result);

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.27.1/ramda.min.js" integrity="sha512-rZHvUXcc1zWKsxm7rJ8lVQuIr1oOmm7cShlvpV0gWf0RvbcJN6x96al/Rp2L2BI4a4ZkT2/YfVe/8YvB2UHzQw==" crossorigin="anonymous"></script>

answered Mar 31, 2021 at 23:07

Ori Drori

196k32 gold badges243 silver badges233 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

omygoodness Over a year ago

Simple mistake again. Thank you :)

Ori Drori Over a year ago

It happens to all of us. You're welcome :)

user10706046 Over a year ago

If you're looking for how to create a new property based on values from other properties from the same object, see this answer from the same author stackoverflow.com/questions/63208320/…

Collectives™ on Stack Overflow

Ramda - how to add new property to objects in array

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related