Ember.js RouterService init() Method

Ember.js is an open-source JavaScript framework used for developing large client-side web applications which are based on Model-View-Controller (MVC) architecture. Ember.js is one of the most widely used front-end application frameworks. It is made to speed up development and increase productivity. Currently, it is utilized by a large number of websites, including Square, Discourse, Groupon, Linked In, Live Nation, Twitch, and Chipotle.

The init() method is used to perform operations on an object as soon as it is instantiated.

Syntax:

init()

Parameters: It takes no parameters.

Returns: This method doesn’t return any values.

Steps to Install and Run Ember.js:

Step 1: To run the following examples, you need to have an ember project. To create one, you will need to install ember-cli first. Write the below code in the terminal:

npm install ember-cli

Step 2: Now, you can create the project by typing in the following piece of code:

ember new <project-name> --lang en

To start the server, type:

ember serve

Example 1: Type the following code to generate the route for this example:

ember generate route students

app/route/students.js

Javascript

import Route from '@ember/routing/route';
import EmberObject from '@ember/object';

const Student = EmberObject.extend({
    init() {
        console.log(`Name is
        ${this.get('name')}`);
    }
});

export default class StudentsRoute extends Route {
    student;
    createStudent() {
        let student = Student.create({
            name: 'Alix Mainston',
            gender: 'F',
            class: 9,
            grade: 'B',
            marks: 98,
            pocket_money: 9643,
        });
        return student;
    }
    getGrade(student) {
        return student.get('grade');
    }
    setGender(student) {
        return student.set('gender', 'F');
    }
    decreaseMarks(student) {
        student.decrementProperty('marks');
    }
    increasePocketMoney(student) {
        student.incrementProperty('pocket_money',
            1000);
    }
    model() {
        this.student = this.createStudent();
        this.student.grade =
            this.getGrade(this.student);
        this.student.gender =
            this.setGender(this.student);
        this.decreaseMarks(this.student);
        this.increasePocketMoney(this.student);
        return this.student;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('student', this.student);
    }
}

app/template/students.hbs

HTML

{{page-title "Students"}}
<h1>Details:</h1>
<div>Name: {{this.student.name}}</div>
<div>Gender: {{this.student.gender}}</div>
<div>Class: {{this.class}}</div>
<div>Grade: {{this.student.grade}}</div>
<div>Marks: {{this.student.marks}}</div>
<div>Pocket Money:
    {{this.student.pocket_money}}
</div>

{{outlet}}

Output:

Example 2: Type the following code to generate the route for this example:

ember generate route details

app/route/details.js

Javascript

import Route from '@ember/routing/route';
import EmberObject from '@ember/object';
import StudentsRoute from './students';

const Person = EmberObject.extend({
    init() {
        console.log('Init Function called....');
    },
});

export default class DetailsRoute extends Route {
    person;
    createPerson() {
        let person = Person.create({
            name: 'Anubhav',
            mobile: '1298119967',
            age: 20,
            salary: 10000,
            city: 'Patna',
            country: 'India',
            gender: 'M',
            zipCode: '800020',
        });
        return person;
    }
    changeName(person) {
        return person.set('name', 'Aayush');
    }
    getGender(person) {
        return person.get('gender');
    }
    increaseSalary(person) {
        person.incrementProperty('salary',
            10000);
    }
    decreaseAge(person) {
        person.decrementProperty('age');
    }
    model() {
        this.person = this.createPerson();
        this.person.name =
            this.changeName(this.person);
        this.person.gender =
            this.getGender(this.person);
        this.increaseSalary(this.person);
        this.decreaseAge(this.person);
        console.log(this.person);
        return this.person;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('person', this.person);
    }
}

app/template/details.hbs

HTML

{{page-title "Details"}}
<h1>Person</h1>
<div>Name: {{this.person.name}}</div>
<div>Age: {{this.person.age}}</div>
<div>Salary: {{this.person.salary}}</div>
<div>Gender: {{this.person.gender}}</div>
<div>Zip Code: {{this.person.zipCode}}</div>
<div>Mobile: {{this.person.mobile}}</div>

{{outlet}}

Output:

Reference: https://api.emberjs.com/ember/4.7/classes/RouterService/methods?anchor=init