Promise Returning Service Pattern

service.js

angular.module('myapp.services.usersettings', [])
.factory('UserSettingsService', ['$q', '$http', function($q, $http){
    return {
        getSettings: function(id) {
            var defer = $q.defer(); // A defer object that you control

            $http.get('some/url')
            .success(function(resp){
                defer.resolve(data);
            })
            .error(function(){
                defer.reject(data);
            });

            return defer.promise; // Return the promise of the defer you control
        }
    }
}]);