Using Resolve in Angularjs

Question

I am using resolve to check if the user is logged in as follows:

routeProvider.
//...
.when('/dashboard', {
            title: 'Dashboard',
            templateUrl: 'view/dashboard.html',
            controller: 'authCtrl',
            resolve: {
                auth: function ($q, Session) {
                    var userInfo = Session.getUserInfo();
                    if (userInfo) {
                        return $q.when(userInfo);
                    } else {
                        return $q.reject({ authenticated: false });
                    }
                }
            }
        })

My question is, what does the $q. when(userinfo); in the code above?

From what I understand, I should pass the variable "userinfo" as parameter in the event "routeChangeSucess", right?

app.run(["$rootScope", "$location", 
  function ($rootScope, $location) {

    $rootScope.$on("$routeChangeSuccess", function (userInfo) {
        console.log(userInfo);
    });
    //...

Note that I have in the code above a console.log, but when checking the Firefox console, does not return me the user data but the following:

Object { name="$routeChangeSuccess", targetScope=h, defaultPrevented=false, more...}

What is wrong?

Answer 1

Actually what’s wrong are the parameters of $routeChangeSuccess, they must be:

$rootScope.$on("$routeChangeSuccess", function(event, current, previous) {

That’s why the log shows this object:

Object { name="$routeChangeSuccess", targetScope=h, defaultPrevented=false, more...}

About the $q.when, he does nothing more than receive a Promise or any object and return a Promise.
If this object is not a Promise, the when makes a wrap his in a Promise and calls the resolve.