I\'m using ember-data with rails and MongoDB and am having problem with the way IDs are stored in MongoDB - in a _id field.
Ember-data will use id as the default field f
Although the question is quite old but i still think my answer could help others:
If you are using ActiveModelSerializer then you just need to do this :
class UserSerializer < ActiveModel::Serializer attributes :id , :name end
It works all fine. I am using emberjs on the front end btw.