ds-references

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  actions: {
    loadFamily: function() {
      var personRef = this.store.getReference('person', 1);
      var person = personRef.value();
      
      var familyRef = person.belongsTo('family');
      if (!familyRef.value()) {
        familyRef.load().then((family) => {
          this.set('model.family', family);
        });
      }
    }
  }
});

application.route.js

import Ember from 'ember';
import { server, json } from '../initializers/pretender';

server.map(function() {
  this.get('/people/1', function() {
    return json({
      data: {
        type: 'person',
        id: 1,
        attributes: {
          name: 'George Michael Bluth'
        },
        relationships: {
          family: {
            data: {
              type: 'family',
              id: 1
            }
          }
        }
      }
    });
  });
  
  this.get('/families/1', function() {
    return json({
      data: {
        type: 'family',
        id: 1,
        attributes: {
          name: "Bluths"
        }
      }
    });
  });
});

export default Ember.Route.extend({
  model: function() {
    return Ember.RSVP.hash({
      person: this.store.findRecord('person', 1)
    });
  },
  
  actions: {
  	reload: function() {
      var personRef = this.store.getReference('person', 1);
      
      personRef.reload();
    }
  }
});

application.template.hbs

Name: {{model.person.name}} <br>

{{#if model.family }}
	Family: {{model.family.name}}
{{else}}
	Family: family not yet loaded <button {{action "loadFamily" }}>loadFamily</button>
{{/if}}

<hr>

<button {{action "reload" }}>reload</button>

initializers.pretender.js

export function returnJSON(status, body) {
  return json(...arguments);
};

export function json(status, body) {
  if (arguments.length === 1) {
    body = status;
    status = 200;
  }
  
  return [
    status,
    { "Content-Type": "application/json" },
    JSON.stringify(body)
  ];
};

export const server = new Pretender();

export function initialize() {
};

export default {
  name: 'pretender',
  initialize
};

models.family.js

import DS from 'ember-data';

const { attr, hasMany } = DS;

export default DS.Model.extend({
	persons: hasMany(),
  name: attr()
});

models.person.js

import DS from 'ember-data';

const { attr, belongsTo } = DS;

export default DS.Model.extend({
  name: attr(),
	family: belongsTo()
});

twiddle.json

{
  "version": "0.4.17",
  "EmberENV": {
    "FEATURES": {
      "ds-references": true
    }
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "canary",
    "ember-data": "canary",
    "ember-template-compiler": "canary",
    "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/f52b8063665420a244ca4547e3eb57b09e61acf7/pretender.js"
  }
}