Updating nested MongoDB document object

Question

Hello there, a quick MongoDB mixed with some Discord knowledge question:

So currently, I want a formation for my MongoDB Document similar to the following:

channels: {
    utility:{
        suggestions: String
    },
    logging: {
        main: String,
        channel: {
            channelCreate: String,
            channelDelete: String,
            channelUpdate: String,
        },
        role: {
            roleCreate: String,
            roleDelete: String,
            roleUpdate: String,
        }
}

This saves channel IDs so users can decide where each event will be logged. I have this set up in the schema and all good, but when I do findOneAndUpdate I don't know how to edit a single field; for example, let's say I want to edit roleDelete which is inside channels.logging.role how would I do that? because doing

await doc.updateOne({channels:{logging:{role:{roleDelete: IDHERE}}}});

It does not work. In fact, it screws everything up and replaces everything within channels to the value given, so how would I go around actually updating ONE value without messing with everything else? Thank you so much for your attention and participation.

This is using NodeJS Mongoose NPM Package btw.

Answer 1

you need to use $set operator. you can find details on https://docs.mongodb.com/manual/reference/operator/update/set/index.html

doc.updateOne({ _id: ID }, {
        $set: {
            channels.logging.role.roleDelete: IDHERE
        }
}

Answer 2

So I solved this by doing the following:

await doc.updateOne({ 'channels.logging.role.roleDelete': IDHERE}, { new: true, upsert: true, setDefaultsOnInsert: true });

This updated the value if it existed and created it if it didn't exist. Using the above methods uses $set internally. ( Read more here )

Feel free to ask if I didn't make myself clear