EmberFire Embedded Relations

adapters.application.js

import Ember from "ember";
import FirebaseAdapter from "emberfire/adapters/firebase";

const { inject } = Ember;

export default FirebaseAdapter.extend({
  firebase: inject.service()
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  actions: {
    add() {
      const event = this.store.createRecord("event");
      event.save();
    }
  }
});

models.event.js

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

export default Model.extend({
  users: hasMany("user", { async: false })
});

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({
  event: belongsTo("event", { async: false })
});

serializers.event.js

import FirebaseSerializer from "emberfire/serializers/firebase";

export default FirebaseSerializer.extend({
  attrs: {
    users: { embedded: "always" }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
<button {{action "add"}}>Add User</button>
{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.8.1",
  "EmberENV": {
    "FEATURES": {},
    "firebase": "https://blistering-inferno-1892.firebaseio.com/"
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "canary",
    "ember-data": "canary",
    "ember-template-compiler": "canary",
    "emberfire": "1.6.6"
  }
}