How to use findById In Mongoose

This method is used to retrieve document from the collection and once document is founded, we can update it using manual method.

Example: Below is an example to push item using findById.

JavaScript

// app.js

const express = require('express')
const app = express();
const PORT = 8000;
const { State, dbConnection } = require('./server')

dbConnection();


// Find the document you want to update
async function inserting(id, cities) {

    let state = await State.findById(id);
    // Push the city name 
    for (let i = 0; i < cities.length; i++) {
        state.cities.push(cities[i]);
    }

    // Save the updated document
    await state.save()
    console.log('Inserted Successfully.')

}
inserting(
    '663b5c6b94b144ab32bb8039',
    [
        "Sirsa", "Jhajjar",
        "Kaithal", "Rewari",
        "Sirmaur", "Thanesar",
        "Pehowa", "Hansi",
        "Manduhal"
    ]

)


// server listening 
app.listen(PORT, () => {
    console.log(`Server is running on ${PORT}`)
})

Output

Output

How to Push Item From an Array in Mongoose ?

In Mongoose, pushing an item to an array can be done using different approaches. To push an item into an array, you can use the $push operator along with the updateOne() or updateMany() method.

We will discuss the different methods to push items from an array in Mongoose:

Table of Content

Inserting a new document
Using $push Operator
Using addToSet Operator
Using findById
Using findByIdAndUpdate

Tags:

#MongoDB #Node.js #Web Technologies

Using addToSet Operator

Using findByIdAndUpdate

How to use findById In Mongoose

How to Push Item From an Array in Mongoose ?

Similar Reads

Contact Us