Mongoose Query API.prototype.getUpdate() Method
Last Updated :
11 Jan, 2023
The Mongoose Query API getUpdate() method is used to return the current update operations which are applied to the mongoose query system.
Syntax:
Query.prototype.getUpdate()
Return type: It returns a JSON object as a response.
Creating node application And Installing Mongoose:
Step 1: Create a node application using the following command:
mkdir folder_name
cd folder_name
npm init -y
touch main.js
Step 2: After completing the Node.js application, Install the required module using the following command:
npm install mongoose
Example 1: In this example, we will use this method to return the update operations applied to the mongoose query.
Filename: main.js
Javascript
const mongoose = require( 'mongoose' )
{
dbName: 'event_db' ,
useNewUrlParser: true ,
useUnifiedTopology: true
}, err => err ? console.log(err)
: console.log( 'Connected to database' ));
const personSchema = new mongoose.Schema({
name: {
type: String,
},
age: {
type: Number,
}
});
const personsArray = [
{
name: 'Luffy' ,
age: 20
},
{
name: 'Nami' ,
age: 20,
},
{
name: 'Zoro' ,
age: 35
}
]
const Person = mongoose.model( 'Person' , personSchema);
(async () => {
const res = await Person
.where({ age: 35 })
.update({ age: 36 })
.getUpdate();
console.log({ res });
})()
|
Step to Run Application: Run the application using the following command from the root directory of the project:
node main.js
Output:
Mongoose Query API.prototype.getUpdate() Method
Example 2: In this example, we will use this method to return the update operations applied to the mongoose query.
Filename: main.js
Javascript
const mongoose = require( 'mongoose' )
{
dbName: 'event_db' ,
useNewUrlParser: true ,
useUnifiedTopology: true
}, err => err ? console.log(err)
: console.log( 'Connected to database' ));
const personSchema = new mongoose.Schema({
name: {
type: String,
},
age: {
type: Number,
}
});
const personsArray = [
{
name: 'Luffy' ,
age: 20
},
{
name: 'Nami' ,
age: 20,
},
{
name: 'Zoro' ,
age: 35
}
]
const Person = mongoose.model( 'Person' , personSchema);
(async () => {
const res = await Person
.find({ age: 20 })
.where( 'name' )
.equals( 'Luffy' )
.update({ name: 'Usorp' })
.getUpdate();
console.log({ res });
})()
|
Step to Run Application: Run the application using the following command from the root directory of the project:
node main.js
Output:
Mongoose Query API.prototype.getUpdate() Method
Reference: https://mongoosejs.com/docs/api/query.html#query_Query-getUpdate
Share your thoughts in the comments
Please Login to comment...