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Ember.js Observable setProperties() Method

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Ember.js is an open-source JavaScript framework used for developing large client-side web applications which is 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 setProperties() method is used to set the list of properties at once.

Syntax:

setProperties( hash );

Parameters:

  • hash: It is the hash of the key and value to set.

Return Value: Object with the passed hash value.

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 setProperties1

app/routes/setProperties1.js

Javascript




import Route from '@ember/routing/route';
import EmberObject from '@ember/object';
 
export default class FruitsRoute extends Route {
    fruits = [
        EmberObject.create({
            'name': 'Lady Finger',
            'isFruit': false,
            'color': 'green'
        }),
        EmberObject.create({
            name: 'Brinjal',
            isFruit: false,
            color: 'purple'
        }),
        EmberObject.create({
            name: 'Apple',
            isFruit: true,
            color: 'red'
        }),
        EmberObject.create({
            name: 'Grapes',
            isFruit: true,
            color: 'green'
        }),
        EmberObject.create({
            name: 'Mango',
            isFruit: true,
            color: 'yellow'
        }),
        EmberObject.create({
            name: 'Watermelon',
            isFruit: true,
            color: 'red'
        }),
        EmberObject.create({
            name: 'Orange',
            isFruit: true,
            color: 'orange'
        })
    ];
    item2;
    item3;
 
    model() {
        this.set('[]', this.fruits)
        return this;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('fruits', this.fruits);
    }
}

app/controllers/setProperties1.js

Javascript




import Ember from "ember";
import { addObject, isAny, isEvery } from "@ember/array";
import EmberObject from '@ember/object';
 
const Fruit = EmberObject.extend({
    init() {
        alert(`${this.get('name')} is Added in list`);
    }
});
 
export default Ember.Controller.extend({
    actions: {
        insert() {
            let temp = this.fruits.reverseObjects();
            this.fruits.setProperties(temp);
        },
        insertItem(data, data1, data2) {
            let temp = Fruit.create({
                name: data,
                isFruit: data1,
                color: data2
            });
            this.fruits.addObject(temp);
        }
    },
});

app/templates/setProperties1.hbs

HTML




{{page-title "setProperties"}}
<h3>Fruit's List :</h3>
<table>
    <tr>
        <th>Name</th>
        <th>Fruit</th>
        <th>Color</th>
      </tr>
      {{#each this.fruits as |detail|}}
        <tr>
              <td>{{detail.name}}</td>
              <td>{{detail.isFruit}}</td>
              <td>{{detail.color}}</td>
        </tr>
  {{/each}}
</table>
<br /><br />
<div>
    <label>Enter Fruit Name: </label>
      {{input value=this.item1}}
</div><br />
<div>
    <label>Item is Fruit: </label>
      {{input value=this.item2}}
</div><br />
<div>
    <label>Enter Fruit color: </label>
      {{input value=this.item3}}
</div><br />
<div>
    <input
        type="button"
        id="insert-item"
        value="Insert Furit"
        {{action "insertItem" this.item1 this.item2 this.item3}}
      />
</div>
<br />
<div>
    <input
        type="button"
        id="insert-item"
        value="Insert List"
        {{action "insert"}}
      />
</div>
{{outlet}}

Output:

setProperties output1

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

ember generate route setProperties2

app/routes/setProperties2.js

Javascript




import Route from '@ember/routing/route';
import Ember from 'ember';
import EmberObject from '@ember/object';
import EmberResolver from 'ember-resolver';
 
export default class PartyRoute extends Route {
    students = [
        EmberObject.create({
            Name: 'Balit',
            skill: 'Python',
            Id: 'stu2',
            gender: true
        }),
        EmberObject.create({
            Name: 'Yashu',
            skill: 'PHP',
            Id: 'stu0',
            gender: false
        }),
        EmberObject.create({
            Name: 'Sam',
            skill: 'R',
            Id: 'stu1',
            gender: true
        }),
        EmberObject.create({
            Name: 'Pokhu',
            skill: 'JavaScript',
            Id: 'stu3',
            gender: true
        }),
        EmberObject.create({
            Name: 'Tanu',
            skill: 'Java',
            Id: 'stu4',
            gender: false
        }),
        EmberObject.create({
            Name: 'Arabh',
            skill: 'c++',
            Id: 'stu5',
            gender: true
        })];
 
    item3 = 'Gulshan';
    item2 = 'Verma';
    item1 = 'stu6';
    item4 = true;
    model() {
        return this.students;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('students', this.students);
        controller.set('temp', this.temp);
        controller.set('item1', this.item1);
        controller.set('item2', this.item2);
        controller.set('item3', this.item3);
        controller.set('item4', this.item4);
    }
}

app/controllers/setProperties2.js

Javascript




import Controller from '@ember/controller';
import { action, find } from '@ember/object';
import Ember from 'ember';
 
let Student = Ember.Object.extend({
    // these will be supplied by `create`
    Name: null,
    skill: null,
    id: null,
    gender: null,
 
    init() {
        alert(`${this.get('Name')} is Listed`);
    },
    fullName: Ember.computed('firstName',
        'lastName', function () {
        return `${this.firstName} ${this.lastName}`;
    }),
 
    Changed: Ember.observer('fullName', function () {
        console.log(`fullName changed to: ${this.fullName}`);
    }),
});
 
export default class Array2Controller extends Controller {
 
    @action
    print(data1, data2, data3, data4) {
        let temp = Student.create({
            Name: data1,
            skill: data2,
            Id: data3,
            gender: data4
        });
        this.students.addObject(temp);
    }
    @action
    flip() {
        this.students.setProperties(
            this.students.reverseObjects())
    }
}

app/templates/setProperties2.hbs

HTML




{{page-title "setProperties"}}
<h3>
    List of Students:
</h3>
<table>
    <tr>
        <th>Name</th>
        <th>skill</th>
        <th>Id</th>
        <th>Gender</th>
      </tr>
      {{#each this.students as |detail|}}
        <tr>
              <td>{{detail.Name}}</td>
              <td>{{detail.skill}}</td>
              <td>{{get detail "Id"}}</td>
              <td>{{if detail.gender "Male" "Female"}}</td>
        </tr>
      {{/each}}
</table>
<br />
<div>
    <label>Enter Student FirstName: </label>
      {{input value=this.item3}}
</div>
<br />
<div>
    <label>Enter Student LastName: </label>
      {{input value=this.item2}}
</div>
<br />
<div>
    <label>Enter Student Id: </label>
      {{input value=this.item1}}
</div>
<br />
<div>
    <label>Enter Student Gender: </label>
      {{input value=this.item4}}
</div>
<br />
<input
    type="button"
      id="set-code"
      value="Update Student details"
      {{action "print" this.item3 this.item2 this.item1 this.item4}}
/>
<br />
<br />
<br />
<input
    type="button"
    id="flip-student"
    value="Flip List"
    {{action "flip"}} />

Output:

setProperties  output2

Reference: https://api.emberjs.com/ember/4.6/classes/Observable/methods/setProperties?anchor=setProperties


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Last Updated : 09 Jan, 2023
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