append object to array of objects in mongoDB using mongoose

Question

this is my schema in mongoose

const companySchema = new mongoose.Schema({
    country: {
        type: String,
        required: true
    },
    username: {
        type: String,
        unique: true,
        required: true
    },
    password: {
        type: String,
        required: true
    },
    vaccine: [{
        name: String,
        price: Number,
        availibility: Number,
        needed: Number
    }]

}, {
    timestamps: true
});

I have created a form which gives the input for vaccine object(name price availability and needed) and its data is available in req.body. How do I append this using mongoose?

notify me if you needed to update the specific object in array besides of insertion — Babak Abadkheir
– Babak Abadkheir, Commented Mar 6, 2021 at 12:01

Babak Abadkheir · Accepted Answer · 2021-03-06 11:35:56Z

2

just use findOneAndUpdate() :

let vaccine ={ ... } // you object trying to add
let filter = { ... } // your filter you are trying to target the collection

Company.findOneAndUpdate(filter, { $addToSet:  {vaccine: vaccine}})

if you want get your updated result just use {new :true}.

full example:

let company = await Company.findOneAndUpdate(filter, { $addToSet:  {vaccine: vaccine}}, {new:true})

edited Mar 6, 2021 at 11:35

answered Mar 6, 2021 at 11:30

Babak Abadkheir

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