Adding a new record to a hasMany relationship

gistfile1.coffee

App.SplitPointController = Ember.ObjectController.extend(
  actions: {
    recordSplit: ->
      split = @store.createRecord('splitTime',
        timestamp: new Date
        splitPoint: @get('model')
      )

      @get('model').get('splitTimes').addObject(
        split.save()
      )
  }
)