Question

I’m using Ember JS for the first time. It’s for use in a Rails project and I’m using the ember-rails gem. I’ve followed the instructions on the ember-rails GitHub.

After bundle install I run rails g ember:bootstrap to kick things off. I then also add the following two lines to application.js:

//= require ember

App = Ember.Application.create();

The issue is that when I visit localhost:3000/, I get the following JavaScript errors logged to the console:

Uncaught Error: assertion failed: Ember Handlebars requires Handlebars 1.0.beta.5 or greater :3000/assets/ember.js?body=1:43
Uncaught ReferenceError: DS is not defined :3000/assets/store.js?body=1:1
Uncaught TypeError: Cannot call method 'template' of undefined :3000/assets/templates/application.js?body=1:1
Uncaught TypeError: Cannot call method 'template' of undefined :3000/assets/templates/application.js?body=1:1
Uncaught Error: <HotDoc.ApplicationView:ember138> - Unable to find template "application".

I’m running Rails 3.2.6.

Any ideas how I can resolve these issues? As far as I understand it, ember-rails includes the Handlebars code so I don’t need to add any other gems.

Am I missing something?

Answer 1

In Ember 1.0.pre they’ve unbundled Handlebars. You need to provide it yourself. Looks like ember-rails assumes the same thing.

Edit

You need to add at the top of the file

//= require handlebars