How to return a resolved promise from an AngularJS Service using $q?

Question

My service is:

myApp.service('userService', [   '$http', '$q', '$rootScope', '$location', function($http, $q, $rootScope, $location) {     var deferred;     deferred = $q.defer();     this.initialized = deferred.promise;     this.user = {       access: false     };     this.isAuthenticated = function() {       this.user = {         first_name: 'First',         last_name: 'Last',         email: '[email protected]',         access: 'institution'       };       return deferred.resolve();     };   } ]); 

I'm calling this in my config file via:

myApp.run([   '$rootScope', 'userService', function($rootScope, userService) {     return userService.isAuthenticated().then(function(response) {       if (response.data.user) {         return $rootScope.$broadcast('login', response.data);       } else {         return userService.logout();       }     });   } ]); 

However, it complains that then is not a function. Aren't I returning the resolved promise?

Answer 1

How to simply return a pre-resolved promise in AngularJS

Resolved promise:

return $q.when( someValue );    // angularjs 1.2+ return $q.resolve( someValue ); // angularjs 1.4+, alias to `when` to match ES6 

Rejected promise:

return $q.reject( someValue );