Ember.js ArrayProxy removeObject() Method

Last Updated : 17 Feb, 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 removeObject() method is used to remove all the occurrences of objects from the array.

Syntax:

removeObject( obj );

Parameters:

obj: It is the object that has to remove.

Return Value: A receiver.

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

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 removeObject1

app/routes/removeObject1.js

import Route from '@ember/routing/route'; 
  
export default class ListRoute extends Route { 
    list = [1, 2, 3, 5, 6, 7, 8, 9]; 
    list1 = [21, 24, 12, 22, 26, 12]; 
    item; 
    idx; 
    model() { 
        return this.list; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('list', this.list); 
        controller.set('item', this.item); 
        controller.set('idx', this.idx); 
        controller.set('list1', this.list1); 
    } 
}

app/controllers/removeObject1.js

import Ember from 'ember'; 
import { pushObject, pushObjects, reduce, reject,  
 removeAt, removeObject } 
    from '@ember/array'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        insertItem(item) { 
            this.list.pushObject(JSON.parse(item)); 
        }, 
        insertItems() { 
            this.list.pushObjects(this.list1); 
        }, 
        sumItems() { 
            let ans = this.list.reduce((acc, curr) => 
            acc += curr); 
            alert(ans) 
        }, 
        printItems() { 
            let ans = this.list.reject((numb) => 
             numb % 2 != 1); 
            alert(ans.join('\n')) 
        }, 
        removeItem(data) { 
            this.list.removeAt(JSON.parse(data)); 
  
        }, 
        removeObject(data) { 
            this.list.removeObject(JSON.parse(data)); 
  
        }, 
    }, 
}); 

app/templates/removeObject1.hbs

{{page-title "removeObject"}} 
<h3>Here is a list of Items: </h3> 
<ul> 
    {{#each @model as |i|}} 
        <li>{{i}}</li> 
    {{/each}} 
</ul> 
<br /> 
<div> 
    <label>Enter Item: </label> 
    {{input value=this.item3}} 
</div> 
<div> 
    <input 
        type="button"
        id="insert-item"
        value="Insert Item"
        {{action "insertItem" this.item3}} 
    /> 
</div> 
<br /> 
<div> 
    <label>Enter Item: </label> 
    {{input value=this.item2}} 
</div> 
<div> 
    <input 
        type="button"
        id="remove-Object"
        value="Remove Item"
        {{action "removeObject" this.item2}} 
    /> 
</div> 
<br /> 
<div> 
    <label>Enter Index: </label> 
    {{input value=this.item}} 
</div> 
<div> 
    <input 
        type="button"
        id="remove-item"
        value="Remove Item at Index"
        {{action "removeItem" this.item}} 
    /> 
</div> 
<br /> 
<div> 
    <input 
        type="button"
        id="print-item"
        value="Print Event Numbers"
        {{action "printItems"}} 
    /> 
</div><br /> 
<div> 
    <input 
        type="button"
        id="push-items"
        value="Insert more items"
        {{action "insertItems"}} 
    /> 
</div> 
<br /> 
<div> 
    <input 
        type="button"
        id="sum-item"
        value="Total sum"
        {{action "sumItems"}} 
    /> 
</div> 
{{outlet}}

Output: Visit localhost:4200/removeObject1 to view the output

Ember.js ArrayProxy removeObject method

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

ember generate route removeObject2

app/routes/removeObject2.js

import Route from '@ember/routing/route'; 
  
export default class PartyRoute extends Route { 
    partyItems = [ 
        'Oxygen', 
        'Source Code', 
        'Infine', 
        'Tenet', 
        'SpiderHead', 
        'The Thing', 
        'A Quiet Place', 
        'The Invisible Man', 
        'Looper', 
        'Ad Astra'
    ]; 
    temp = [ 
        'Shutter Island', 
        'Matrix', 
        'Avatar', 
        'Fantastic Beast', 
        'Avengers', 
        'Fantastic four', 
        'Hult', 
        'Superman', 
        'Spiderman', 
        'The Batman'
    ]; 
    item; 
    idx; 
    model() { 
        return this.partyItems; 
    } 
    setupController(controller, model) { 
        super.setupController(controller, model); 
        controller.set('partyItems', this.partyItems); 
        controller.set('item', this.item); 
        controller.set('idx', this.idx); 
        controller.set('temp', this.temp); 
    } 
} 

app/controllers/removeObject2.js

import Ember from 'ember'; 
import { pushObject, reduce, reject, removeAt, 
removeObject, pushObjects } from '@ember/array'; 
  
export default Ember.Controller.extend({ 
    actions: { 
        insertItem(item) { 
            this.partyItems.pushObject(item); 
        }, 
        push_item(data) { 
            this.partyItems.pushObjects(data); 
        }, 
        print_item() { 
            let ans = this.partyItems.reduce((acc, curr) => 
            acc += '\n' + curr); 
            alert(ans) 
        }, 
        searchItem(data) { 
            let ans = this.partyItems.reject((movie) => 
            movie.slice(0, 1) != data); 
            alert(ans.join('\n')) 
        }, 
        removeItem(data) { 
            this.partyItems.removeObject(data); 
  
        }, 
        removeItemAt(data) { 
            this.partyItems.removeAt(JSON.parse(data)); 
        }, 
    }, 
}); 

app/templates/removeObject2.hbs

{{page-title "removeObject"}} 
<h3>Here is a list of items: </h3> 
<ul> 
    {{#each @model as |party|}} 
        <li>{{party}}</li> 
    {{/each}} 
</ul> 
<br /> 
<div> 
    <label>Enter character: </label> 
    {{input value=this.item}} 
</div> 
<div> 
    <input 
        type="button"
        id="search-item"
        value="Seach Movie Name Start with latter"
        {{action "searchItem" this.item}} 
    /> 
</div> 
<br /> 
<div> 
    <label>Enter Index: </label> 
    {{input value=this.item4}} 
</div> 
<div> 
    <input 
        type="button"
        id="remove-item-At"
        value="Remove Movie At index"
        {{action "removeItemAt" this.item4}} 
    /> 
</div> 
<br /> 
<div> 
    <label>Enter Item: </label> 
    {{input value=this.item3}} 
</div> 
<div> 
    <input 
        type="button"
        id="remove-item"
        value="Remove Movie"
        {{action "removeItem" this.item3}} 
    /> 
</div> 
<br /> 
<div> 
    <label>Enter Item: </label> 
    {{input value=this.item2}} 
</div> 
<div> 
    <input 
        type="button"
        id="insert-item"
        value="Insert Item"
        {{action "insertItem" this.item2}} 
    /> 
</div> 
<br /> 
<input 
    type="button"
    id="contains-item"
    value="Add Movies"
    {{action "push_item" this.temp}} 
/> 
<br /><br /> 
<input 
    type="button"
    id="show-item"
    value="List All Movies"
    {{action "print_item"}} 
/> 
{{outlet}}