js-data-album.js

app.factory('AlbumFactory', function(DS, $state){
  // defining a Js-Data resource 
  var AlbumFactory = DS.defineResource({
    basePath: 'api', // what string prepends each uri ?
    name: 'albums',  // basePath + name = endpoint ('api/albums')
    idAttribute: '_id',  // where on the object is the primary key stored?
    methods: {
      go: function(){
        // transition to songs state 
        $state.go('songs', {_id: this._id})
      }
    }
  })

  return AlbumFactory; 
})
.controller('AlbumController', function(AlbumFactory){
  // GET to 'api/albums'
  AlbumFactory.findAll()
  .then(function(albums){
    var firstAlbum = albums[0]
  })
})