Convert array in string to an ObjectId in node/express

Question

I pass ids in a post request in postman and reference to another model and get

5dcf8dc320742961c8b5a801, 5dcf8eca20742961c8b5a808, 5dcf8c8fef739a6159938ca8

in my controller I convert them as

let ids = [req.body.ids]
console.log(ids)

and get

['5dcf8dc320742961c8b5a801, 5dcf8eca20742961c8b5a808, 5dcf8c8fef739a6159938ca8']

I wanted to convert them to an ObjectId so I tried

ObjectId(numberArray)

and

numberArray.map(num => ObjectId(num))

but all return

(node:25080) UnhandledPromiseRejectionWarning: Error: Argument passed in must be a single String of 12 bytes or a string of 24 hex characters

does this help: stackoverflow.com/questions/50980042/…

Akber Iqbal
– Akber Iqbal

2019-11-24 06:28:10 +00:00
Commented Nov 24, 2019 at 6:28 — Akber Iqbal
– Akber Iqbal, Commented Nov 24, 2019 at 6:28
I also look to others and pass on that link too

Mimi
– Mimi

2019-11-24 07:52:43 +00:00
Commented Nov 24, 2019 at 7:52 — Mimi
– Mimi, Commented Nov 24, 2019 at 7:52

Mimi · Accepted Answer · 2019-11-24 07:58:25Z

0

I got it, I mean someone suggest me to use split that returns a new array

let singers = ['5dcf8dc320742961c8b5a801, 5dcf8eca20742961c8b5a808, 5dcf8c8fef739a6159938ca8']
let singerArr = singers.split(', ')
console.log(singerArr);

[ '5dcf8c8fef739a6159938ca8',
  '5dcf8dc320742961c8b5a801',
  '5dcf8eca20742961c8b5a808' ]

and use for loop and find query to match to these ids and use mongoose.Types.ObjectId

though I'm having a different scenario to fix right now

answered Nov 24, 2019 at 7:58

Mimi

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