Question

I’ve been trying to evaluate emberjs for a rails project.

Can someone suggest (or ideally for my failing project) how get my data to display in the view? I’ve only run rails g ember:bootstrap and created a User table with a single attribute username.

Link to repo: https://github.com/Rhodee/ember-hello-world

The console provides only these clues:

Uncaught TypeError: Cannot call method 'extend' of undefined application_controller.js:1
Uncaught TypeError: Cannot call method 'extend' of undefined user_controller.js:1
Uncaught TypeError: Object <Ember.Object:ember282> has no method 'removeArrayObserver' ember.js:11068

I’ve already utilized these resources for study:

• https://github.com/emberjs/data#readme
• http://www.cerebris.com/blog/2012/01/26/beginning-ember-js-on-rails-part-2/
• http://jsfiddle.net/C7LrM/59/
• http://emberjs.com/documentation/

Where can I find up-to-date tutorials reflecting the state of how to get things wired up to simply display an index template?

Answer 1

The first two errors you’re seeing are an open issue.

I’m trying to figure this all out, like you. I resolved the errors by changing the boilerplate from

MyApp.ApplicationController = Ember.ObjectController.extend

to

MyApp.ApplicationController = Ember.Object.extend

I hope that helps!