To push data to an array of objects in MongoDB, you can use the $push operator in combination with the $each modifier. Here's an example:

Suppose you have a MongoDB collection called users with the following document:

To push a new email object to the emails array, you can use the following query:

          { email: "johndoe@yahoo.com", primary: false }

In this example, the update() method is used to update the emails array in the users collection. The first argument to the update() method is the query to find the document to update, which in this case is the document with the _id value of ObjectId("1234567890").

The second argument to the update() method is an object containing the $push operator, which adds the new email object to the emails array. The $each modifier is used to push an array of one or more values to the emails array. In this case, we're pushing a single email object with the email value of "johndoe@yahoo.com" and the primary value of false.

After running this query, the emails array in the users collection will look like this:

You can use this same approach to push data to an array of objects in any MongoDB collection.

In this article, we will discuss MongoDb pushing data to an array of objects.

MongoDb pushing data to an array of objects

const userSchema = new mongoose.Schema({
    userID: { type: String, require: true, unique: true },
    username: { type: String },
    serverID: { type: String, require: true },
    roles: [String],
    gameProfile: {
        accountName: { type: String, default: '?' },
        accountLevel: { type: Number, min: 1, max: 65, default: 1 },
        accountClass: { type: String, default: '?' },
        favoriteWeapon: { type: String, default: '?' },
    },
}, { timestamps: true });

const User = mongoose.model('User', userSchema);


And I'm trying to create a "gameProfile" edit command, so the user can update their accountName, accountClass, etc. Currently, when the user runs my edit command, I receive an object of the data they want to edit (all in one shot) that may look something like: { accountName: 'bob', accountLevel: 55 } or { accountName: 'billy', favoriteWeapon: 'axe', accountLevel: 100, accountClass: 'TANK'} or any permutation of those fields in the gameProfile object.

So what I need to happen is basically merge that object into the existing User document, in one update. Without updating the values that weren't edited.

// const data = { accountLevel: 50, accountClass: 'DPS', favoriteWeapon: 'sword' }

UserModel.updateOne({ userID: interaction.user.id }, { data }, function(err, res) {
    if (err) {
        console.error(err);
    } else {
        console.log('RESULT: ', res);
    }
});


Which doesn't error, but also doesn't update the database. If anyone can help me out it'd be much appreciated. I'm just learning MongoDB/NoSQL, thank you

How to update MongoDB with unknown object

I've been working with mongoose for a quite a while now and recently started exploring graphql. In mongoose, we can use specific fields like so:

User.findById(id).select('+name +email');


We can also do the same in a graphql query. So what's the difference? In the resolve function in graphql, we will anyways get a list of all users. Doesn't graphql add extra delay in response?

Graphql vs Mongoose Query Methods

Is it possible to somehow grab the previous doc and doc before it was saved in a mongoose post hook?

I need to do a compare between the 2 docs after save and send changes to another service but I don't want to do this is all the different points in the API but just in the 1 hook in mongoose :/

mongoose post hook get previous state of document?

I am a self-taught learner and becoming a MERN stack developer. I want to save/retrieve audio files in MongoDB with node js backend but I do not know how to do that so, I need ideas/suggestions I would appreciate it. 

You can try using GridFs for storing your audio files check that https://www.mongodb.com/docs/manual/core/gridfs/

How can i save and retrive audio files in MongoDB with nodejs backend? what should i use?

I have a question about doing ACID transactions in mongodb using node.

If I was to await several queries inside a Promise.all() which was inside an acid transaction, would all the queries roll back if one failed?

Basically what I'm asking is, do acid transactions work when using promise.all() inside the acid transaction ?

ACID transactions in mongodb

I'm making Next.JS app with Mongoose (MongoDB) and GraphQL.

During the work, the question arose about how to properly combine these two schemes? In my case I got two identical schemes via different technologies. May be each of them should do different things (for example validation) or something like that?

How combine GraphQL and Mongoose schemas correctly?

I want to get the objects that have the time property greater than current time. How to get them?

How to get current time in mongo aggregate?

Change the boolean value of 'available' Array e.g at index 4 which taken from user input to false using mongoose

Hey, can anyone help me to Work In Spring Boot With MongoDB?

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Trending Blogposts on mongoose

MongoDb pushing data to an array of objects

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openHow to update MongoDB with unknown object

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openGraphql vs Mongoose Query Methods

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openmongoose post hook get previous state of document?

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openHow can i save and retrive audio files in MongoDB with nodejs backend? what should i use?

3

1

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openACID transactions in mongodb

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openHow combine GraphQL and Mongoose schemas correctly?

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openHow to get current time in mongo aggregate?

1

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openHow combine GraphQL and Mongoose schemas correctly?