AngularJS Good Factory Default Snippet

angular_factory_default.js

var app = angular.module('app', []);
 
app.controller('Ctrl1', function(DataFactory) {
  this.items = DataFactory.items;
 
  DataFactory.getDataStream();
});
 
app.controller('Ctrl2', function($timeout, DataFactory) {
  // when this eventually fires and gets *remote* data again
  // our other controller will automatically sync up
  // without the need for the $watch function
  $timeout(DataFactory.getDataStream, 2000);
});
 
app.factory('DataFactory', function($q) {
  var svc = {};
  svc.items = [];
 
  svc.getDataStream = function() {
    
    var fakeData = [
      { id: 1, name: 'name 1' },
      { id: 2, name: 'name 2' },
      { id: 4, name: 'name 4' }
    ];
    
    // using $q to fake async data grab
    return $q.when(fakeData)
      .then(function(data) {
        // this is the magic
        angular.copy(data, svc.items);
      });
  };
 
  return svc;
});