How do I turn list of strings to list of ObjectIds in Node JS?

Question

I'm using mongoose and I have the following list:

const ids: ["63bd7878f1f085f7d8a6827f", "63be730bf1f085f7d8a682c8"];

I want to turn ids into a list of ObjectIds..

I've tried the following:

const affectedUsers = await Users.find(
            { _id: { $in: [ids.map(e => mongoose.Types.ObjectId(e))] } }
        );

But it gives me the following error:

"message": "Cast to ObjectId failed for value \"[\n  new 
ObjectId(\"63bd7878f1f085f7d8a6827f\"),\n  new
ObjectId(\"63be730bf1f085f7d8a682c8\")\n]\" 
(type Array) at path \"_id\" for model \"users\""

[ids.map(e => mongoose.Types.ObjectId(e))] -> ids.map(e => mongoose.Types.ObjectId(e)) because .map() returns an array, you don't need to wrap it in another array. — VLAZ
– VLAZ, Commented Jan 11, 2023 at 10:15

Tyler2P · Accepted Answer · 2023-01-11 16:28:09Z

1

You have added extra brackets at $in query, try this...

const affectedUsers = await Users.find(
  { _id: { $in: ids.map(e => mongoose.Types.ObjectId(e)) } }
);

edited Jan 11, 2023 at 16:28

Tyler2P

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answered Jan 11, 2023 at 10:14

Azeem Kalhoro

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Comments

OTMANƏ EL · Accepted Answer · 2023-01-11 16:34:55Z

0

You should remove the extra array in the $in operator, like so:

const affectedUsers = await Users.find(
   { _id: { $in: ids.map(e => mongoose.Types.ObjectId(e)) } });

answered Jan 11, 2023 at 16:34

OTMANƏ EL

516 bronze badges

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