Not a issue about code here but your blog post - close it any time

[jusfeel]

http://thetechcofounder.com/getting-started-with-ember-js-using-ember-cli/

Even your blog is written one year ago, your post still the No. 2 recent tutorial on Ember-Watch. Along reading it, I found some small not-hurtful bump that confused me for a while.

1. We need to replicate the name of the action on the template, so let's do that in app/templates/todos.js. -should be ".hbs"
2. This is what I got after generate active and complete route, so I have to manually change it to yours.

Router.map(function() { this.resource('todos', { path: '/' }); this.route('todos', function() { this.route('active'); this.route('complete'); }); });

1. Maybe add todo.save on deleteTodo since you have that for clearCompleted

   deleteTodo: function(todo) {
      todo.deleteRecord();
      todo.save();
   }

2. In allAreDone, missing "model." before @each

   .property('model.@each.isCompleted')