New Twiddle

adapters.application.js

import Adapter from "ember-data/adapters/rest";

export default Adapter.extend({
   host: 'https://localhost:5432'
});

models.author.js

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

export default Model.extend({
  name: DS.attr('string'),
  books: DS.hasMany('book', { async: false }),
  booksAttr: DS.attr()
});

models.book.js

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

export default Model.extend({
  title: DS.attr('string'),
  author: DS.belongsTo('author', { async: false })
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function() {
    return this.get('store').findAll('author')
.then(console.log.bind(console))
.catch((error) => {
console.log('in catch', error);   
throw error;   
    }); 
  }
});

serializers.application.js

import Serializer from "ember-data/serializers/rest";

export default Serializer.extend();

templates.application-error.hbs

message: {{model.message}}
<pre>
{{model.stack}}
</pre>

templates.application-loading.hbs

loading...

templates.application.hbs

<h2>My Library</h2>
<hr>
{{outlet}}

{{#each model as |author| }}
  <section>
    <h3>{{author.name}}</h3>
    <h5>{{author.booksAttr}}</h5>

    <ul>
      {{#each author.books as |book|}}
        <li>{{book.title}}</li>
      {{/each}}
    </ul>
  </section>
{{/each}}

twiddle.json

{
  "version": "0.10.4",
  "EmberENV": {
    "FEATURES": {
    }
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "release",
    "ember-data": "canary",
    "ember-template-compiler": "release",
    "route-recognizer": "https://rawgit.com/tildeio/route-recognizer/56f5fcec6ae58d8e86b5dc77609809fb91198142/dist/route-recognizer.js",
    "FakeXMLHttpRequest": "https://rawgit.com/pretenderjs/FakeXMLHttpRequest/23c3a96b5b24f1bfe595867437e4f128a29c2840/fake_xml_http_request.js",
    "pretender": "https://rawgit.com/pretenderjs/pretender/c6de9afe18b1472aded2592f5a80ad9a26a0e262/pretender.js"
  },
  "addons": {
  }
}