New Twiddle

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  
  actions: {
    save(model) {
    }
  }
});

application.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function() {
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{foo-bar saveProfile=(action "save") model=model.profile}}
<br>
<br>

foo-bar.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
    saveProfile(profile) {
      console.log(profile);
    },
  }
});

foo-bar.template.hbs

<button {{action "saveProfile" profile}}>Save</button>

models.profile.js

import DS from 'ember-data';

export default DS.Model.extend({
  user: DS.belongsTo('user', {async: true })
});

models.user.js

import DS from 'ember-data';

export default DS.Model.extend({
    profile: DS.belongsTo('profile', {async: true })
});

twiddle.json

{
  "version": "0.4.10",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.11/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember-template-compiler.js"
  }
}