Ember display data of association

I have a list of posts, when I click in a post I should go to an page showing only the clicked post and all comments(async) of this. I do not know how I can display the list of comments.

pls tell me if something is outside of pattern, all code:

route.js

  this.resource('posts', {path: '/'} , function() {
    this.route('post', {path: 'posts/:post_id'});
  });

Model's:

// Comment:
export default DS.Model.extend({
  message: DS.attr('string'),
  network: DS.attr('string'),
  post: DS.belongsTo('post', {async: true}),
});

// Post:
export default DS.Model.extend({
  message: DS.attr('string'),
  network: DS.attr('string'),
  comments: DS.hasMany('comment', {async: true}),
});

Routes:

// posts.index
model(params) {
   return this.store.find('post');
}

// posts.post
model(params) {
var {post_id, network} = params;
    return this.store.find('comment', post_id);
}

templates:

// posts.index
{{#each post in model}}
  {{#link-to "posts.post" post.id (query-params network=post.network)}}
    {{post.id}} / {{post.network}}
  {{/link-to}}
{{/each}}

// posts.post
<p>Model {{model}}</p>
{{#each comment in model}}
  {{comment.message}}
{{/each}}

API Mocked

// GET / posts
res.send({
  'posts': [
    {id: 1, message: 'I"m POST', network: 'twitter'}
  ]
});

// GET /:id comments
res.send({
  'post': {
    'data': [1]
  },
  'comments': [
    {id: 1, post: 1, message: 'Hello 1', network: 'twitter'},
    {id: 2, post: 1, message: 'Hello 2', network: 'twitter'},
  ]
});