Untitled

//(...)

.factory('utils', function () {
  return {
    // Util for finding an object by its 'id' property among an array
    findById: function findById(a, id) {
      for (var i = 0; i < a.length; i++) {
        if (a[i].id == id) return a[i];
      }
      return null;
    },

    // Util for returning a random key from a collection that also isn't the current key
    newRandomKey: function newRandomKey(coll, key, currentKey){
      var randKey;
      do {
        randKey = coll[Math.floor(coll.length * Math.random())][key];
      } while (randKey == currentKey);
      return randKey;
    }
  };
})

.factory('userData', ['$http', 'utils', 'Restangular', function ($http, utils, Restangular) {

  var data = Restangular.all('users').getList().then(function(response) {
    return response;
  });

  var factory = {};
  factory.all = function () {
    return data;
  };
  factory.get = function (id) {
    return data.then(function(){
      return utils.findById(data, id);
    })
  };
  return factory;
}]);

//(...)

Users.controller('UsersController', ['userData', function($scope, $state, $stateParams, $filter, ngTableParams, userData) {

        var list = data.all(); // ERROR - data is undefined

        $scope.tableParams = new ngTableParams({
                page: 1,            // show first page
                count: 10,          // count per page
                sorting: {
                    id: 'asc'     // initial sorting
                }
            }, {
                total: list.length, // length of data
                getData: function($defer, params) {
                        var orderedData = params.sorting() ? $filter('orderBy')(list, params.orderBy()) : list;
                $defer.resolve(orderedData.slice((params.page() - 1) * params.count(), params.page() * params.count()));
                }
         });

//(...)