gistfile1.js

// Uncaught TypeError: Object App.MySerializer has no method 'registerTransform' 

App.Adapter = DS.RESTAdapter.extend({
  serializer: "App.MySerializer"
});

App.MySerializer = DS.Serializer.extend({
  primaryKey: function(type) {
    var typeString = type.toString.split(".")[1].underscore();
    console.log("test");
    return typeString + "_id";
  }
});