interceptors.js

/*
				 * Register error provider that shows message on failed requests
				 * or redirects to login page on unauthenticated requests
				 */
				$httpProvider.interceptors.push(function($q, $rootScope, $location, $log, alertsService) {
					return {
						'responseError' : function(rejection) {

							if (!rejection.config.ignoreAuthModule) {
								switch (rejection.status) {
									case 202:
										alertsService.danger("Rejected request: " + rejection.data.reason);
										break;
									case 401:
										var deferred = $q.defer();
										$log.warn("Login required");
										$rootScope.$broadcast('event:auth-loginRequired', rejection);
	
										$location.path("/login");
										return deferred.promise;
									case 403:
										$log.warn("Can not access this");
										$location.path("/login");
										$rootScope.$broadcast('event:auth-forbidden', rejection);
										break;
									case 417:
										alertsService.danger("Rejected request: " + rejection.data.reason);
										break;
									case 404:
										alertsService.danger("Request cannot be found: " + rejection.data.reason);
									    break;
									default:
										alertsService.danger("Error Occured, Please try later, <br/> Server Message: " + rejection.data.reason);
									    break;
								}
							}
							// otherwise, default behavior
							return $q.reject(rejection);
						}
					};
				});