replace object in array with different object

Question

I have two arrays. For example something like this:

"results": [
 {
 "seen": false,
 "_id": "5f6a9608c248df5c14a6aa53",
 "user_id": "5f69264fe410854be4840e9f",
 "invited_user_id": "5f69254ee410854be4840e99",
 "createdAt": "2020年09月23日T00:25:44.314Z",
 "__v": 0
 },
 {
 "seen": false,
 "_id": "5f6a943d8d745b422cd67796",
 "user_id": "5f69264fe410854be4840e9f",
 "invited_user_id": "5f69254ee410854be4840e99",
 "createdAt": "2020年09月23日T00:18:05.634Z",
 "__v": 0
 }
 ],
 "users": [
 {
 "_id": "5f69254ee410854be4840e99",
 "name": "Paweł",
 "surname": "mnv"
 },
 {
 "_id": "5f692626e410854be4840e9c",
 "name": "Sebastian",
 "surname": "fasd"
 }
 
 ]

and now I would like to replace the "invited_user_id" form results array with user object from users array when results.invited_user_id === users._id.

What I want to get :

"results": [
 {
 "seen": false,
 "_id": "5f6a9608c248df5c14a6aa53",
 "user_id": "5f69264fe410854be4840e9f",
 "invited_user_id": {
 "_id": "5f69254ee410854be4840e99",
 "name": "Paweł",
 "surname": "mnv"
 },
 "createdAt": "2020年09月23日T00:25:44.314Z",
 "__v": 0
 },
 {
 "seen": false,
 "_id": "5f6a943d8d745b422cd67796",
 "user_id": "5f69264fe410854be4840e9f",
 "invited_user_id": {
 "_id": "5f692626e410854be4840e9c",
 "name": "Sebastian",
 "surname": "fasd"
 },
 "createdAt": "2020年09月23日T00:18:05.634Z",
 "__v": 0
 }
 ]

I could write some long function which would do that, but I am wonder if there is any faster way to do this ?

Answer 1

Yeah....

let data = // here put your JSON 
let results = []
data['results'].forEach(result =>{
 data['users'].forEach(user => {
 if(result.invited_user_id === user._id){
 result.invited_user_id = user
 results.push(result)
 }
 })
})
let finalData = {
 'results': results
}
console.log(finalData)

Now finalData have the JSON do you want.

• poldeeek: hm... in invited_user_id i got this : "invited_user_id": "{\n _id: 5f69254ee410854be4840e99,\n name: 'Paweł',\n surname: 'fds'\n}",. It is not a object but string...
• Derek Menénedez: Let me a moment, and I try to fix that part.
• Derek Menénedez: I don't know how you are print that, but for me it's fine, let's see imgur.com/gallery/sC7ueZ2
• poldeeek: results and users are two different arrays in my case. It's data from data base - codesandbox.io/s/lucid-jackson-nwmub?file=/src/index.js . Maybe this is the problem... :v
• Derek Menénedez: result.invited_user_id = JSON.parse(user); try this...