data relations

controllers.application.js

import Ember from 'ember';

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

mirage.config.js

export default function() {

  this.get('posts/:id');

}

mirage.models.comment.js

import { Model } from 'ember-cli-mirage';

export default Model.extend({
});

mirage.models.post.js

import { Model, hasMany } from 'ember-cli-mirage';

export default Model.extend({
  comments: hasMany()
});

mirage.scenarios.default.js

export default function(server) {
  let post = server.create('post', {
    title: 'Dragonstone'
  });

  post.createComment({
    body: 'Dany is home!'
  })
}

mirage.serializers.application.js

import { JSONAPISerializer } from 'ember-cli-mirage';

export default JSONAPISerializer.extend({
});

models.comment.js

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

export default Model.extend({
  body: attr('string'),
  post: belongsTo('post')
});

models.post.js

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

export default Model.extend({

  title: attr('string'),
  comments: hasMany('comment')

});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    return this.store.findRecord('post', 1, {
      include: 'comments'
    })
  }
});

templates.application.hbs

<h1>{{model.title}}</h1>

<ul>
{{#each model.comments as |comment|}}
  <li>{{comment.body}} (posted to "{{comment.post.title}}")</li>
{{/each}}
</ul>

{{outlet}}

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1",
    "ember-cli-mirage": "^0.3.4"
  }
}