Ember.js Ember.NativeArray toggleProperty() 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 toggleProperty() method is used to set the value of the boolean property to the opposite of its current value.
Syntax:
toggleProperty( keyName );
Parameters:
- keyName: It is the name of the property to toggle.
Return Value: The new property 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 toggleProperty1
app/routes/toggleProperty1.js
Javascript
import Route from '@ember/routing/route' ; import EmberObject from '@ember/object' ; export default class WebsitesRoute extends Route { food = [ EmberObject.create({ food: 'apple' , isFruit: true , buck: '1' , }), EmberObject.create({ food: 'Potato' , isFruit: false , buck: '2' , }), EmberObject.create({ food: 'Banana' , isFruit: true , buck: '1' , }), EmberObject.create({ food: 'Burgur' , isFruit: false , buck: '2' , }), EmberObject.create({ food: 'Orange' , isFruit: true , buck: '1' , }), ]; food2 = [ EmberObject.create({ food: 'sandwitch' , isFruit: false , buck: '2' , }), EmberObject.create({ food: 'bean' , isFruit: false , buck: '2' , }), EmberObject.create({ name: 'Banana' , isFruit: true , buck: 1 }), EmberObject.create({ name: 'Water-melon' , isFruit: true , buck: 2 }), EmberObject.create({ name: 'Papaya' , isFruit: true , buck: 1 }), , , ]; 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/toggleProperty1.js
Javascript
import Ember from 'ember' ; export default Ember.Controller.extend({ value: 0, actions: { List() { let ans = '' ; this .food.forEach((item) => ans += item.getProperties( 'food' ).food + ' is in Bucket ' + item.getProperties( 'buck' ).buck + '\n' ); alert(ans); }, Bucket2() { this .food.forEach((item, i) => item.setProperties( this .food2.at(i))); }, toggle2() { this .food.forEach((item, i) => item.toggleProperty( 'isFruit' )); }, }, }); |
app/templates/toggleProperty1.hbs
Javascript
{{page-title "toggleProperty" }} <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.buck}}</td> <td>{{website.isFruit}}</td> </tr> {{/each}} </table> <br /><br /> <input type= "button" id= "increase" value= "List All items with Bucket number" {{action "List" }} /> <br /><br /> <input type= "button" id= "update-list" value= "List another Bucket item" {{action "Bucket2" }} /> <br /><br /> <input type= "button" id= "toggle-property" value= "Toggle Fruit Property" {{action "toggle2" }} /> {{outlet}} |
Output: Visit localhost:4200/toggleProperty1 to view the output.
Example 2: Type the following code to generate the route for this example.
ember generate route toggleProperty2
app/routes/toggleProperty2.js
Javascript
import Route from '@ember/routing/route' ; import EmberObject from '@ember/object' ; import { } from '@ember/array' ; 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' }) ]; fruits2 = [ EmberObject.create({ name: 'Potato' , isFruit: false , color: 'brown' }), EmberObject.create({ name: 'Tomato' , isFruit: false , color: 'red' }), EmberObject.create({ name: 'Banana' , isFruit: true , color: 'Yellow' }), EmberObject.create({ name: 'Water-melon' , isFruit: true , color: 'green' }), EmberObject.create({ name: 'Papaya' , isFruit: true , color: 'yellow' }), ]; model() { return this .fruits; } setupController(controller, model) { super .setupController(controller, model); controller.set( 'fruits' , this .fruits); controller.set( 'fruits2' , this .fruits2); } } |
app/controllers/toggleProperty2.js
Javascript
import Ember from "ember" ; import { isAny, isEvery } from "@ember/array" ; export default Ember.Controller.extend({ actions: { print() { let ans = '' ; this .fruits.forEach((item) => ans += item.getProperties( 'name' ).name + '\n' ); alert(ans); }, Change() { let ans = this .fruits.forEach((item, i) => item.setProperties( this .fruits2.at(i))); }, toggle() { this .fruits.forEach((item) => item.toggleProperty( 'isFruit' )); }, }, }); |
app/templates/toggleProperty2.hbs
Javascript
{{page-title "toggleProperty" }} <h3>Here is a list of eatables: </h3> <br/><table> <tr> <th>Name</th> <th>isFruit</th> <th>color</th> </tr> {{ #each @model as |detail|}} <tr> <td>{{detail.name}}</td> <td>{{detail.isFruit}}</td> <td>{{detail.color}}</td> </tr> {{/each}} </table> <br/> <input type= "button" id= "list-item" value= "List all Items" {{action 'print' }}/> <br/><br/> <input type= "button" id= "change-item" value= "Change all Item in Bucket" {{action 'Change' }}/> <br/><br/> <input type= "button" id= "toggle-isFruits" value= "Toggle isFruit Properties" {{action 'toggle' }}/> {{outlet}} |
Output: Visit localhost:4200/toggleProperty2 to view the output.
Reference: https://api.emberjs.com/ember/4.4/classes/Ember.NativeArray/methods/toggleProperty?anchor=toggleProperty
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