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 set() method is used to set the provided key value to the object.
Syntax:
set( keyName, value );
Parameters:
- keyName: It is the name of the property whose value we want to set.
- value: It is the value of the key which we want to set.
Return Value: The object with the passed key 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 set1
app/routes/set1.js
import Route from '@ember/routing/route' ;
import EmberObject from '@ember/object' ;
export default class WebsitesRoute extends Route {
food = [
EmberObject.create({
food: 'apple' ,
isFruit: true ,
quant: 3,
}),
EmberObject.create({
food: 'Potato' ,
isFruit: false ,
quant: 4,
}),
EmberObject.create({
food: 'Banana' ,
isFruit: true ,
quant: 2,
}),
EmberObject.create({
food: 'Burgur' ,
isFruit: false ,
quant: 2,
}),
EmberObject.create({
food: 'Orange' ,
isFruit: true ,
quant: 7,
}),
];
temp;
model() {
return this .food;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'food' , this .food);
controller.set( 'temp' , this .temp);
controller.set( 'food2' , this .food2);
}
} |
app/controllers/set1.js
import Ember from 'ember' ;
export default Ember.Controller.extend({
value: 0,
actions: {
remove_item(item) {
this .food.set( '[]' , this .food.without
( this .food.findBy( 'food' , item)));
},
list() {
let ans = '' ;
this .food.forEach((item) => ans +=
item.get( 'food' ) + '\n' );
alert(ans)
},
increase() {
this .food.forEach((item) =>
item.incrementProperty( 'quant' ));
},
decrease() {
this .food.forEach((item) =>
item.decrementProperty( 'quant' ));
},
},
}); |
app/templates/set1.hbs
{{page-title "set" }}
<h3>List of Item in Buckets</h3>
<table> <tr>
<th> Food_Name </th>
<th>Bucket </th>
<th>Fruit </th>
</tr>
{{ #each @model as |website|}}
<tr>
<td>{{website.food}}</td>
<td>{{website.quant}}</td>
<td>{{website.isFruit}}</td>
</tr>
{{/each}}
</table> <br /> <div> <label>Enter value: </label>
{{input value= this .item}}
</div> <input type= "button"
id= "R-item"
value= "Remove this item"
{{action "remove_item" this .item}}
/> <br /><br /> <input type= "button"
id= "list-items"
value= "List All Items"
{{action "list" }} />
<br /><br /> <input type= "button"
id= "increase-property"
value= "Increase Quantity"
{{action "increase" }}
/> <br /><br /> <input type= "button"
id= "decrease-property"
value= "decrease Quantity"
{{action "decrease" }}
/> {{outlet}} |
Output: Visit localhost:4200/set1 to view the output.
Example 2: Type the following code to generate the route for this example:
ember generate route set2
app/routes/set2.js
import Route from '@ember/routing/route' ;
import EmberObject from '@ember/object' ;
import { } from '@ember/array' ;
export default class FruitsRoute extends Route {
students = [
EmberObject.create({ name: 'Rahul' ,
Class: 11, marks: 75 }),
EmberObject.create({ name: 'Sam' ,
Class: 12, marks: 59 }),
EmberObject.create({ name: 'David' ,
Class: 11, marks: 67 }),
EmberObject.create({ name: 'Druv' ,
Class: 12, marks: 44 }),
EmberObject.create({ name: 'Mahan' ,
Class: 12, marks: 87 }),
EmberObject.create({ name: 'Ram' ,
Class: 11, marks: 71 }),
EmberObject.create({ name: 'Dadu' ,
Class: 12, marks: 58 })
];
model() {
return this .students;
}
setupController(controller, model) {
super .setupController(controller, model);
controller.set( 'students' , this .students);
}
} |
app/controllers/set2.js
import Ember from "ember" ;
import { isAny, isEvery } from "@ember/array" ;
export default Ember.Controller.extend({
actions: {
increase(data) {
this .students.forEach((item) =>
item.incrementProperty( 'marks' , JSON.parse(data)));
},
decrease(data) {
this .students.forEach((item) =>
item.decrementProperty( 'marks' , JSON.parse(data)));
},
remove(item) {
this .students.set( '[]' ,
this .students.without( this .students.findBy
( 'name' , item)));
},
show_first() {
let ans = this .students.get( 'firstObject' );
alert(ans.name)
},
show_last() {
let ans = this .students.get( 'lastObject' );
alert(ans.name)
},
},
}); |
app/templates/set2.hbs
{{page-title "set" }}
<h3>Students List: </h3> <table> <tr>
<th>Name</th>
<th>Class</th>
<th>Marks</th>
</tr>
{{ #each @model as |detail|}}
<tr>
<td>{{detail.name}}</td>
<td>{{detail.Class}}</td>
<td>{{detail.marks}}</td>
</tr>
{{/each}}
</table> <br /> <div> <label>Enter value: </label>
{{input value= this .item}}
</div> <input type= "button"
id= "increase-marks"
value= "Increase All marks by Value"
{{action "increase" this .item}}
/> <br /><br /> <div> <label>Enter value: </label>
{{input value= this .item2}}
</div> <input type= "button"
id= "decrease-marks"
value= "decrease All marks by Value"
{{action "decrease" this .item2}}
/> <br /><br /> <div> <label>Enter Name: </label>
{{input value= this .item3}}
</div> <input type= "button"
id= "remove-student"
value= "Remove Student"
{{action "remove" this .item3}}
/> <br /><br /> <input type= "button"
id= "first-student"
value= "Show First Student in list"
{{action "show_first" }}
/> <br /><br /> <input type= "button"
id= "last-student"
value= "Show Last Student in list"
{{action "show_last" }}
/> {{outlet}} |
Output: Visit localhost:4200/set2 to view the output.
Reference: https://api.emberjs.com/ember/4.4/classes/EmberObject/methods/get?anchor=set