New Twiddle

components.post-master.js

import Ember from 'ember';
import Changeset from 'ember-changeset';

const { Component, get } = Ember;

export default Component.extend({
  
  init() {
  	this._super(...arguments);
    let model = get(this, 'model');
    let validator = get(this, 'validate');
    this.changeset = new Changeset(model, validator);
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
	actions: {
  	validate({ key, newValue, oldValue, changes, content }) {
      // lookup a validator function on your favorite validation library
      // should return a Boolean
    }
  }
});

models.user.js

import Model from "ember-data/model";
import attr from "ember-data/attr";
import { belongsTo, hasMany } from "ember-data/relationships";

export default Model.extend({
  
  firstName: attr(''),
  lastName: attr('')
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
  	return { firstName: 'Terrance', lastName: 'Bryant'}
  }
});

templates.application.hbs

{{outlet}}

{{post-master
	changeset=(changeset model (action "validate"))
}}

templates.components.post-master.hbs

{{yield}}

{{one-way-input value=changeset.firstName update=(action (mut 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",
     "ember-changeset": "1.2.2",
     "ember-one-way-controls": "3.0.1"
  }
}