Component: Lifecycle Hooks

components.my-component.js

import Ember from 'ember';
 
export default Ember.Component.extend({
  init(options) { 
    this._super(...arguments);
    console.log('init', options);
  },
  
  didInsertElement() {
    console.log('didInsertElement');
  },
  
  didUpdateAttrs() {
    console.log('didUpdateAttrs');
  },
  
  didReceiveAttrs() {
    console.log('didReceiveAttrs');
  },
  
  willUpdate(options) {
    console.log('willUpdate', options);
  },

  didUpdate(options) {
    console.log('didUpdate', options);
  },
  
  willRender() {
    console.log('willRender');
  },
  
  didRender() {
    console.log('didRender');
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  
  data: {
    a: [{a: 1}, {b: 2}, {c: 3}],
    b: "text"
  },
  
  actions: {
    updateData() {
      this.notifyPropertyChange('data');
      this.set('data.b', `text ${Math.random()}`);
    }
  }
});

templates.application.hbs

<div>
  <p><b>appName</b>: {{input type="text" value=appName}}</p>
  <p>Triggers: didUpdateAttrs, didReceiveAttrs, willUpdate, willRender, didUpdate, didRender</p>
</div>


<div>
  <p><b>data.a.firstObject.a without DDAU</b>: {{input type="text" value=data.a.firstObject.a}}</p>
  <p>Triggers: willUpdate, willRender, didUpdate, didRender</p>
</div>

<div>
  <p><b>data.a.b without DDAU</b>: {{input type="text" value=data.b}}</p>
  <p>Triggers: willUpdate, willRender, didUpdate, didRender</p>
</div>

<div>
  <p><b>Update data.a.b using DDAU + <code>this.notifyPropertyChange()</code></b>: <button {{action 'updateData'}}>CLICK</button></p>
  <p>Triggers: didUpdateAttrs, didReceiveAttrs, willUpdate, willRender, didUpdate, didRender</p>
</div>

<hr>

{{my-component name=appName data=data}}

templates.components.my-component.hbs

<p><code>name</code> = {{name}}</p>

<p><code>attrs.data.a.firstObject.a</code> = {{attrs.data.a.firstObject.a}}</p>

<p><code>attrs.data.b</code> = {{attrs.data.b}}</p>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}