Ember.js Ember.Templates.helpers yield() Method

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 yield() method is used to place the template inside another template. 

Syntax:

{{ yield hash }}

Parameters:

• hash: It is optional object passed to yield. 

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 yield1

app/components/arr.hbs

Javascript

import Component from '@glimmer/component';
import {tracked} from '@glimmer/tracking';
import { action, addObjects } from '@ember/object';
export default class CompactComponent extends Component {

    items = ['Oxygen',
        'Source Code',
        'Infine',
        'Tenet',
        'SpiderHead',
        'The Thing',
        'A Quiet Place',
        'The Invisible Man',
        'Looper',
        'Ad Astra',];

    @action
    remove(data) {
        this.items.removeObject(data);
    }
}

app/components/arr.hbs

HTML

{{#unless @show}}

This comoponent Don't Have block!!<br/>
{{else}}
<ul>
<h3>{{yield}} : </h3>
    {{#each this.items as |party|}}
        <li>{{party}}</li>
    {{/each}}
</ul>
<br />
{{textarea value=this.value}}
<br/>
<input
    type="button"
    id="check-atIndex"
    value="Remove"
    {{action "remove" this.value}}
/>
<br/><br/>
{{/unless}}

app/templates/yield1.hbs

HTML

<Arr @show={{true}}>
    List of items
</Arr>
{{outlet}}
<Arr/>

Output:

Ember.js Ember.Templates.helpers yield() Method

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

ember generate route yield2

app/components/arr2.hbs

Javascript

import Component from '@glimmer/component';
import { tracked } from '@glimmer/tracking';
import { action } from '@ember/object';
import { mapBy } from '@ember/object';

export default class extends Component {
    student = [{
        "name": "Sam Snehil",
        "age": 21
    },
    {
        "name": "Satyam Sahu",
        "age": 23
    },
    {
        "name": "Sohan Argrwal",
        "age": 25
    },
    {
        "name": "Sreya Sarma",
        "age": 19
    }
    ,
    {
        "name": "Satyam Sahu",
    }];


    print(item) {

        let ans = this.student.filterBy('name',item)
        alert(JSON.stringify(ans));
    }
}

app/components/arr2.hbs

HTML

{{yield}}
<table>
    <tr>
        <th>Name</th>
        <th>Age</th>
    </tr>
      {{#each this.student as |detail|}}

    {{#unless detail.age}}
    <tr>
            <td>{{get detail 'name'}}</td>
            <td>{{18}}</td>
        </tr>
    {{else}}
            <tr>
            <td>{{get detail 'name'}}</td>
            <td>{{get detail 'age'}}</td>
        </tr>
    {{/unless}}
    {{/each}}
</table>
<br/>
{{textarea value=this.value}}
<br/>
<input type="button"
    id="set-code"
    value="Introduce Student"
    {{action 'print' (mut this.value)}}/>

app/templates/yield2.hbs

HTML

<Arr2>
    <h1>
        List of Student :
    </h1>
</Arr2>
{{outlet}}

Output:

Ember.js Ember.Templates.helpers yield() Method

Reference: https://api.emberjs.com/ember/4.6/classes/Ember.Templates.helpers/methods/yield?anchor=yield