Doesn't seem to want to load embeded data

ComponentSerializer.rb

class ComponentSerializer < ActiveModel::Serializer
  embed :ids
  attributes :id,
              :back_image,
              :cols,
              :front_image,
              :name,
              :rows

  has_many :parts, include: true

  has_many :element_lights, embed: :objects, include: true

  def front_image
    "#{object.front_image}"
  end

  def back_image
    "#{object.back_image}"
  end

  def type
    object.class.name
  end
end

model.coffee

ServerDemo.Component = ServerDemo.Partable.extend
  element_lights: DS.hasMany 'ServerDemo.ElementLight', {embeded: 'always'}

Store.js

DS.RESTAdapter.map('ServerDemo.Component',{
  element_light: {
    embedded:'always'
  }
})