Ember.js different views if login
App.userController = Ember.ArrayController.create({
  loadUser: function () {
    var self = this;
    $.post("/api/user/auth/", {user:'user',password:'pass'},function(user,code){
      if (code == 'success') {
        App.User.create(user);

      }
    });
  }

});
App.userController.loadUser();

<script type='text/x-handlebars'>
    <div class='span10'>
      {{#if App.user }}
        <h1>User</h1>
      {{else}}
        <h1>no User </h1>
      {{/if}}
    </div>   </script>

if (code == 'success') {
    App.user = App.User.create(user);
}

layout :layout_switcher

private

def layout_switcher
  user_signed_in? ? 'application' : 'logged_out'
end