Polymorphic Records

adapters.application.js

import DS from 'ember-data';

export default DS.RESTAdapter.extend({
  shouldReloadAll: function() {
    return true;
  }
});

application.controller.js

import Ember from 'ember';

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

application.template.hbs

<h1>My Library</h1>
<hr>
{{outlet}}

index.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function() {
    return this.get('store').findRecord('my-model', 1);
  }
});

index.template.hbs

  <section>
    Number of items: {{model.items.length}}
    <ul>
      {{#each model.items as |item|}}
        <li>{{item.title}}</li>
      {{/each}}
    </ul>
  </section>

initializers.mockjax.js

import Ember from 'ember';

export function initialize() {
  $.mockjax({
    type: 'GET',
    url: '/myModels/1',
    status: '200',
    dataType: 'json',
    responseText: {
      myModel: {
        id: 1,
        items: [
          { id: 1, type: 'lecture' },
          { id: 2, type: 'assignment' }
        ]
      }
    }
  });
  
  $.mockjax({
    type: 'GET',
    url: '/lectures/1',
    status: '200',
    dataType: 'json',
    responseText: {
      lecture: { id: 1, title: "my first lecture" }
    }
  });
  
  $.mockjax({
    type: 'GET',
    url: '/assignments/2',
    status: '200',
    dataType: 'json',
    responseText: {
      assignment: { id: 2, title: "my first assignment" }
    }
  });
}
  
export default {
  name: 'mockjax',
  initialize: initialize
};

models.assignment.js

import DS from 'ember-data';

export default DS.Model.extend({
  title: DS.attr()
});

models.item.js

import DS from 'ember-data';

export default DS.Model.extend({
  
});

models.lecture.js

import DS from 'ember-data';
import Item from './item';

export default Item.extend({
  title: DS.attr()
});

models.my-model.js

import DS from 'ember-data';

export default DS.Model.extend({
  items: DS.hasMany('item', { polymorphic: true, async: true })
});

twiddle.json

{
  "version": "0.4.11",
  "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",
    "jquery-mockjax": "https://cdnjs.cloudflare.com/ajax/libs/jquery-mockjax/1.5.3/jquery.mockjax.js"
  }
}