Re-use template code in Ember

I've got a few routes set up like this:

this.route('posts', { 'path' : 'blog/' }, function() {
  this.route('category', { 'path' : 'category/:category' });
  this.route('post', { 'path' : '/:permalink' });
});

On posts I show all posts, on category only the ones specific for this post-category and on post only a single post.

All could re-use the same template to render a post but I don't quite understand how to accomplish this.

Can you explain me how to to this?