person.js.coffee

App.Person = DS.Model.extend(
  name: DS.attr("string")
)

person_controller.js.coffee

App.PersonController = Ember.ObjectController.extend
  actions:
    submit: ->
      console.log "Will save" # This prints
      onSuccess = (person) ->
        console.log "Yay saved #{person.get("name")}"
      onFail = (person) ->
        console.log "Did not save :("
      @get("model").save().then(onSuccess, onFail)
      console.log "done calling the promise" # This prints
      
      # but neither success nor fail come out. Nothing is posted to the server

store.js.coffee

class App.Store extends DS.Store
  adapter: '_ams'

DS.RESTAdapter.reopen(
  namespace: 'admin'
)