Displaying the tweets

We have a URL address that responds with a JSON-formatted list of tweets. There are corresponding controllers and route classes, which are defined by default from Ember.js. However, we need to set a model and get the handle from the browser's address, so we will create our own classes. This can be seen as follows:

App.SocialFeedTweetsRoute = Ember.Route.extend({
  model: function(params) {
    this.set('handle', params.handle);
    return Ember.$.getJSON('/tweets/' + params.handle);
  },
  setupController: function(controller, model) {
    controller.set("model", model);
         controller.set("handle", this.get('handle'));
    }
});

App.SocialFeedTweetsController = Ember.ArrayController.extend({
  handle: '',
  formattedHandle: function() {
    return "<a href='http://twitter.com/" + this.handle + "'>@" + this.handle + '</a>';
  }.property('handle')
});

The dynamic segment from the URL comes to the Route's model function in the params argument. We will...