Ember.js RouterService mergedProperties Property

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 mergedProperties is the property that helps to merge the value of the subclass property’s value with the superclass property value of the ember class.

Syntax:

mergedProperties

Parameters: It doesn’t take any parameters.

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 demo1

app/routes/demo1.js

Javascript

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

const Employee = ObjectProxy.extend({
    mergedProperties: ['language'],
    language: {
        1: 'Hindi',
    },
});

export default class DetailsRoute extends Route {
    person;
    createPerson() {
        let person = Employee.create({
            name: 'Aayush Sahu',
            age: 26,
            mobile: '9876542819',
            country: 'India',
            language: ['Tamil'],
            salary: 53000,
            gender: 'M',
            zipCode: '800020',
        });
        return person;
    }

    model() {
        this.person = this.createPerson();
        console.log(this.person);
        return this.person;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('person', this.person);
    }
}

app/templates/demo1.js

HTML

{{page-title "mergedProperties"}}
<table>

    <h1>Person</h1>
    <div><b>Name:</b> {{this.person.name}}</div>
    <div><b>Gender:</b> {{this.person.gender}}</div>
    <div><b>Salary:</b> {{this.person.salary}}</div>
    <div><b>Zip Code:</b> {{this.person.zipCode}}</div>
    <div><b>Mobile:</b> {{this.person.mobile}}</div>
    <div><b>Country:</b> {{this.person.country}}</div>
    <div><b>Age:</b> {{this.person.age}}</div>
    <div><b>Language speak:</b>
        {{#each-in this.person.language as |key value|}}
        <li>{{value}}</li>
        {{/each-in}}
    </div>
</table>
{{outlet}}

Output:

mergedProperties output1

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

ember generate route demo2

app/routes/demo2.js

Javascript

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

const Student = EmberObject.extend({
    mergedProperties: ['Id'],
    Id: {
        Aadhar_card: ['8976-4251-9826'],
        School_id: ['12345654'],
    },
});

export default class StudentsRoute extends Route {
    student;
    createStudent() {
        let student = Student.extend({
            name: 'Pokhraj Verma',
            gender: 'M',
            class: 8,
            grade: 'A',
            marks: 87,
            Id: {
                School_id: ['16171819'],
            },
        });
        return student.create();
    }

    model() {
        this.student = this.createStudent();
        return this.student.get('mergedProperty');
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('student', this.student);
    }
}

app/templates/demo2.js

HTML

{{page-title "mergedProperties"}}
<table>

    <h1>Details:</h1>
    <div><b>Name:</b> {{this.student.name}}</div>
    <div><b>Gender:</b> {{this.student.gender}}</div>
    <div><b>Class:</b> {{this.student.class}}</div>
    <div><b>Grade:</b> {{this.student.grade}}</div>
    <div><b>Marks:</b> {{this.student.marks}}</div>
    <div><b>Id_Cards:</b> </div>
    <table>{{#each-in this.student.Id as |key value|}}
        <li>{{key}}: {{value}}</li>
        {{/each-in}}
    </table>
</table>

{{outlet}}

Output:

mergedProperties output2

Reference: https://api.emberjs.com/ember/4.6/classes/RouterService/properties/mergedProperties?anchor=mergedProperties