The function .save is not valid and the function .map is unavailable when attempting to update a document

Question

The function .save is not valid and the function .map is unavailable when attempting to update a document

Here is the code I am working with: When I attempt to run it in Postman, I receive the following error message:

"message": "account.save is not a function"

const account = await Account.find({ "buildings.gateways.devices.verificationCode": code })
    var accountId = account ? account.map(item => item._id) : null

const buildings = _.flatMap(account, a => a.buildings)
const gateways = _.flatMap(buildings, b => b.gateways);
const devices = _.flatMap(gateways, g => g.devices);

// finding deviceId to insert for user from that account
const device = _.filter(devices, d => d.verificationCode === code);

device.patientFirstName = req.body.firstName;
device.patientLastName = req.body.lastName;
account.save();

When I attempt to switch to using findOne(), a new issue arises:

"account.map is not a function"

I always get values from account, so why can't I map them? It's puzzling to me.

Your assistance would be greatly appreciated. Thank you

javascript mongodb mongoose mongodb-query mongoose-schema

Answer 1

Answer №1

.find() will give you an array where you can use Array.map(), but you must remember to save each document individually using .save():

const accounts = await Account.find({ "buildings.gateways.devices.verificationCode": code })
var accountId = account ? account.map(item => item._id) : null

for(let account of accounts){
    await account.save();
}

.findOne() (awaited) gives you a single document, so you cannot directly use .map():

const account = await Account.findOne({ "buildings.gateways.devices.verificationCode": code })
var accountId = account ? account._id : null

account.save();

Answer 2

.find() will give you an array where you can use Array.map(), but you must remember to save each document individually using .save():

const accounts = await Account.find({ "buildings.gateways.devices.verificationCode": code })
var accountId = account ? account.map(item => item._id) : null

for(let account of accounts){
    await account.save();
}

.findOne() (awaited) gives you a single document, so you cannot directly use .map():

const account = await Account.findOne({ "buildings.gateways.devices.verificationCode": code })
var accountId = account ? account._id : null

account.save();

The function .save is not valid and the function .map is unavailable when attempting to update a document

Answer №1

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