Yielding an Action

components.my-scale.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    'update-value'(value) {
       this.set('value', value);
    }
  }
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

<p>The "value" in my-scale is updated by the input field by exposing an action that will change the value.</p>

{{#my-scale as |someAction|}}
  {{input key-up=(action someAction)}}
{{/my-scale}}

templates.components.my-scale.hbs

Value (in my-scale): {{value}}

<br />

{{yield (action 'update-value')}}

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"
  }
}