Ember.js EmberRouter incrementProperty() Method

Last Updated : 24 Jan, 2023

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 incrementProperty() method of EmberRouter is the method that is used to increase the value of the property of the Ember object.

Syntax:

this.object.incrementProperty( PropertyName, decrement );

Parameters:

PropertyName: It is the name of the property that we want to decrease.
decrement: It is the value by which value will decrease.

Return: The new property value.

Steps to Install and Run Ember.js:

Step 1: To run the following examples you will need to have an ember project with you. 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 test1

app/routes/test1.js

Javascript

import Route from '@ember/routing/route'; 
import EmberObject from '@ember/object'; 
import Ember from 'ember'; 
  
export default class StudentsRoute extends Route { 
  
    CreateEmployee() { 
        let Employee = EmberObject.create({ 
            name: '', 
            gender: '', 
            position: '', 
            Salary: 0, 
            email: '', 
            mobile: '', 
        }); 
        return Employee; 
    } 
    setName(data) { 
        return this.employee.set('name', data); 
    } 
    setGender() { 
        return this.employee.set('gender', 'M'); 
    } 
    setPosition(data) { 
        return this.employee.set('position', data); 
    } 
    SalaryDecrease(data) { 
        return this.employee.decrementProperty('Salary', data); 
    } 
    SalaryIncrease(data) { 
        return this.employee.incrementProperty('Salary', data); 
    } 
    setEmail(data) { 
        return this.employee.set('email', data); 
    } 
    setMobile(data) { 
        return this.employee.set('mobile', data); 
    } 
    model() { 
        this.employee = this.CreateEmployee(); 
        this.employee.name = this.setName('Yogesh Verma'); 
        this.employee.gender = this.setGender(); 
        this.employee.position = this.setPosition('Software Engineer'); 
        this.employee.email = this.setEmail('yogesh@gmail.com'); 
        this.employee.mobile = this.setMobile('9382938239'); 
        this.SalaryIncrease(94000); 
        this.SalaryDecrease(4000); 
        return this.employee; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('employee', this.employee); 
    } 
} 

app/templates/test1.hbs

HTML

{{page-title "Employee"}} 
<h1>Employee Details:</h1> 
<div>Name: {{this.employee.name}}</div> 
<div>Gender: {{this.employee.gender}}</div> 
<div>Position: {{this.employee.position}}</div> 
<div>Salary: {{this.employee.Salary}}</div> 
<div>Mobile: {{this.employee.mobile}}</div> 
<div>Email: {{this.employee.email}}</div> 
{{outlet}} 

Output:

Output1

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

ember generate route test2

app/routes/test2.js

Javascript

import Route from '@ember/routing/route'; 
import EmberObject from '@ember/object'; 
import Ember from 'ember'; 
  
const Student = EmberObject.extend({ 
    changed: Ember.observer('Marks', function () { 
        console.log(`Marks Changed`); 
    }) 
}); 
export default class WebsitesRoute extends Route { 
  
    students = [ 
        Student.create({ 
            fullName: 'Sam Snehil', 
            Marks: 92, 
            class: 11, 
        }), 
        Student.create({ 
            fullName: 'Ram Sahu', 
            Marks: 84, 
            class: 10, 
        }), 
        Student.create({ 
            fullName: 'Soham Verma', 
            Marks: 89, 
            class: 12, 
        }), 
        Student.create({ 
            fullName: 'David Tigga', 
            Marks: 95, 
            class: 9, 
        }), 
        Student.create({ 
            fullName: 'Pokhu Verma', 
            Marks: 95, 
            class: 10, 
        }), 
        Student.create({ 
            fullName: 'Satyam Verma', 
            Marks: 96, 
            class: 12, 
        }), 
    ]; 
  
    temp; 
    model() { 
        return this.students; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('students', this.students); 
        controller.set('temp', this.temp); 
    } 
} 

app/controllers/test2.js

Javascript

import Ember from 'ember'; 
  
export default Ember.Controller.extend({ 
    actions: { 
  
        increaseMarks(data) { 
            this.students.forEach((item) => 
                item.incrementProperty('Marks', JSON.parse(data))); 
        }, 
        decreaseMarks(data) { 
            this.students.forEach((item) => 
                item.decrementProperty('Marks', JSON.parse(data))); 
        }, 
    }, 
}); 

app/templates/test2.hbs

HTML

{{page-title "incrementProperty"}} 
<h3>List of Item in Buckets</h3> 
<table> 
    <tr> 
        <th> Name </th> 
        <th>Class </th> 
        <th>Marks </th> 
      </tr> 
      {{#each @model as |temp|}} 
        <tr> 
              <td>{{temp.fullName}}</td> 
              <td>{{temp.class}}</td> 
              <td>{{temp.Marks}}</td> 
        </tr> 
      {{/each}} 
</table> 
<br /> 
<div> 
    <label>Enter value : </label> 
      {{input value=this.item}} 
</div><br /> 
<input
    type="button"
      id="increase-property"
      value="Increase Quantity"
      {{action "increaseMarks" this.item}} 
/> 
<br /><br /> 
<input
    type="button"
      id="decrease-property"
      value="decrease Quantity"
      {{action "decreaseMarks" this.item}} 
/> 
{{outlet}}