linkedonewaycomputedmacro

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  publicProp: 'define me',
  internalProp: internalViewOf('publicProp')
});

function internalViewOf(prop) {
  return Ember.computed(prop, {
    get() {
      return this.get(prop);
    },
    set(key, value) {
      return value;
    }
  });
}

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

appName: {{appName}}

<button onclick={{action (mut appName) value='target.value'}} value='...'>...</button>

{{my-component publicProp=appName}}

templates.components.my-component.hbs

<button onclick={{action (mut internalProp) value='target.value'}} value="hi">Hi</button>

public: {{publicProp}}<br>
internal: {{internalProp}}

twiddle.json

{
  "version": "0.10.5",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.8.0",
    "ember-data": "2.8.0",
    "ember-template-compiler": "2.8.0",
    "ember-testing": "2.8.0"
  },
  "addons": {}
}