Updated certain field of a document and do not effect the rest - node.js

Question

I have below code.
User.findOneAndUpdate({ _id: request.body.id }, record, {new:true})
.exec((error, doc) => {
if (error) return response.json(error);
return response.json(doc);
});
Above code when I enter all the fields such as name, email and password then it correctly update the User Schema however, when I provide name and email but not password then it again updates all the fields including the password to null value. But in second scenario I do not want to update the password because I am not providing the password so it should not change. How can I make it work as I intend?
UPDATE
I ended up using below method but for save password is required and it has a pre hook that which encrypts password before saving. That means password is necessary for this method.
User.findOne({ _id: request.body.id })
.exec((error, user) => {
if (error) return response.json(error);
user.name = request.body.name;
user.email = request.body.email;
user.password = request.body.password;
user.save();
return response.json(user);
});

Answer 1

Use $set for partial update as following:
Users.findOneAndUpdate(
{ _id: request.body.id }, // query
{
"$set": { // doc
"name": req.body.name,
"email": req.body.password
}
},
{ upsert: true, new: true }, // options
function(err, doc){ // callback
if (err){
throw err;
} else if(doc){
console.log('Existing document updated successfully');
console.log(doc);
}
}
);

Answer 2

Have you try with new updateOne(). You can do like this:
const updateObj = {
"$set": {
"name": req.body.name,
"email": req.body.password
}
};
const updateQuery = User.updateOne({
_id: request.body.id
}, updateObj, {
new: true
}).exec();
updateQuery
.then((updateResponse) => {
console.log("Record update successfully");
response.status(200).json(updateResponse);
})
.catch((err) => {
console.log("Error while updating record: ", err);
return response.status(500).json({
error: err
});
});
You can read more on: https://docs.mongodb.com/manual/reference/method/db.collection.updateOne/
Hope this helps :)