Change a single value of a subdocument in mongodb - node.js

Question

I have a Model called Notes. It has a subdocument requests which holds various documents with values userId, reqType, accepted value( false by default) and noteId of the sender, request and note respectively. When the user hits a certain route I want to keep all the data to be as their previous values, just updating the accepted field to true.
The below code leads to no change in the data or a different iteration leads to erasing all the data other than accepted field and modifying it to true.
How should I do this?
const noteSchema = new mongoose.Schema(
requests: [
{
userId: mongoose.Schema.ObjectId,
noteId: mongoose.Schema.ObjectId,
reqType: String,
accepted: {
type: Boolean,
default: false,
},
},
],
}
)
const Note = mongoose.model('Note', noteSchema)
const note = await Note.findById(req.body.noteId)
await note.updateOne({
requests: {
$elemMatch: {
userId: req.body.userId,
reqType: req.body.reqType,
noteId: req.body.noteId,
},
$set: { "requests.$.accepted": true },
},
})

Answer 1

You do not need to retrieve the document and then update it. Just update it. Use this one:
await Note.updateOne(
{
"requests.userId": req.body.userId,
"requests.reqType": req.body.reqType,
"requests.noteId": req.body.noteId
},
{
$set:
{
"requests.$.accepted":true
}
}
);
I checked, it worked.
With first part mongoose will find the document, with $set it will be updated.