How to update a value inside an object with schema.findoneandupdate (Mongodb/mongoose)

Question

I'm making a discord bot in discord.js and I want to make a database that keeps track of user messages, I've got the tracking part and the database structure down, which goes as follows:

_id: guildId,
metrics: {
  [userId]: 
  {
    messageCount: 1
  }
}

I'm using a mongoose schema, so how would I use schema.findoneandupdate to incrementally increase the messageCount value?

Answer 1

You can use $inc operator:

More detail: https://docs.mongodb.com/manual/reference/operator/update/inc/