Obtém dados remotos para o escopo local

getRemote.directive.js

/*
 * <select get-remote="http://path/to/users.json as users">
 *   <option ng-repeat="user in users" ng-value="user.id">{{user.name}}</option>
 * </select>
 */
.directive('getRemote', function ($http) {
  return {
    restrict: 'A',
    link: function ($scope, $element, $attrs) {
      var pars = $attrs.getRemote.toLowerCase().split(' as ');
      $http.get(pars[0]).success(function (data) {
        $scope[pars[1]] = data;
      });
    }
  };
})