Two-way and One-way

components.child-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    oneWayInputUpdate: function(value) {
      this.attrs.updateOneWay(value);
    }
  }
});

components.parent-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  twoWay: 'two-way data bound',
  
  oneWay: 'one-way data bound',
  
  actions: {
  
    updateOneWay: function(oneWay) {
      this.set('oneWay', oneWay);
    }
    
  }
  
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

<h1>Two-way and One-way</h1>
{{outlet}}
<br>
<br>

templates.components.child-component.hbs

{{! Best practice: Use the input element instead of the input helper. }}

two way: {{input value=twoWay}}

<br>

one way: <input value={{oneWay}}
                onblur={{action "oneWayInputUpdate" value="target.value"}}
         />

{{yield}}

templates.components.parent-component.hbs

Parent component:
<br>
<br>

two way: {{twoWay}}
<br>
one way: {{oneWay}}

<br>
<br>
Child component:
<br>
<br>

<!--
  Closure actions, v +1.13
  function-passing solution to replace
  the old action bubbling mechanism
  http://emberjs.com/blog/2015/06/12/ember-1-13-0-released.html#toc_closure-actions
  http://alexdiliberto.com/posts/ember-closure-actions/
-->

{{child-component twoWay=twoWay
                  oneWay=oneWay
                  updateOneWay=(action "updateOneWay")}}

{{yield}}

templates.index.hbs

{{parent-component}}

twiddle.json

{
  "version": "0.11.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.11.0",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.11.0",
    "ember-testing": "2.11.0"
  },
  "addons": {}
}