Going through Ember.js documentation, I am not able to figure out how to create nested models. Assume that I have the following JSON:
App.jsonObject = {
You need to use pushObject not push when adding to Ember array objects with bindings. And you should probably use get() when accessing the positions property. See my jsFiddle for the corrections.
pushObject
push
get()
positions
http://jsfiddle.net/ud3323/Y5nG5/