use DS.Serializer to send post_id with comments

comments loaded async in post model

app/assets/javascripts/controllers/commentsNewController.js

@@ -5,7 +5,7 @@ App.CommentsNewController=Ember.ObjectController.extend({
 	save: function() {
       var me = this;
 	  var post = this.get('controllers.post.content');
-	  var comment = this.get('store').createRecord('comment', { post_id: post.id, text: this.get('text') });
+	  var comment = this.get('store').createRecord('comment', { post: post, text: this.get('text') });
       comment.save().then(function(comment){
         me.get('target').transitionTo('post.index');
       });

app/assets/javascripts/models/post.js

@@ -1,5 +1,5 @@
 App.Post=DS.Model.extend({
-  comments: DS.hasMany('comment'),
+  comments: DS.hasMany('comment', { async: true }),
   title: DS.attr('string'),
   text: DS.attr('string')
 });

app/assets/javascripts/store.js

@@ -8,3 +8,4 @@
 //    return promise;
 //  }
 //});
+App.ApplicationSerializer = DS.ActiveModelSerializer.extend({});

app/assets/javascripts/templates/post/index.hbs

@@ -2,7 +2,7 @@
   {{text}}
   <ul>
     {{#each comment in comments}}
-      <li>{{#linkTo post.comment comment}}{{comment.text}}{{/linkTo}}</li>
+      <li>{{#linkTo 'post.comment' comment}}{{comment.text}}{{/linkTo}}</li>
     {{/each}}
   </ul>
   {{#linkTo 'comments.new'}}New Comment{{/linkTo}}

app/models/post.rb

@@ -3,8 +3,8 @@ class Post < ActiveRecord::Base
   attr_accessible :text, :title
   has_many :comments
 
-#  def as_json(options={})
-#    { :id => self.id, :title => self.title, :text => self.text, :comment_ids =>self.comments.collect{|comment| comment.id} }
-#  end
+  def as_json(options={})
+    { :id => self.id, :title => self.title, :text => self.text, :comment_ids =>self.comments.collect{|comment| comment.id} }
+  end
 
 end