$rootScope behaviour in angularJs

Question

I am storing authentication token in $rootScope . This token will be sent as part of header in every request via interceptor.

<code>
 $rootScope.jwtToken=successfulResponse.data.body;
</code>

Interceptor code is as below :-

var bpInterceptor = function($q,$rootScope){
return {
    request : function(config){

        if($rootScope.jwtToken !== undefined){
            config.headers.Authorization = $rootScope.jwtToken.token;  
        }
        return config;
    }
}
};
</code>

Q) Does $rootScope have different object for two browser sessions?

of course. normally you read token from cookies and attach to it. — YOU
– YOU, Commented May 24, 2016 at 14:18
100% yes, store it on a persistent cookie or localstorage then fetch it to rootscope on new browser sessions. — nada
– nada, Commented May 24, 2016 at 14:19

floribon · Accepted Answer · 2016-05-25 16:14:40Z

1

Angular code is executed client side only, so any state will disappear once you reload the page.

If you want to keep information between two user session, you have many options:

Keep that info in the URL using $location or location
Store that info in localStorage and retrieve it next time
Persist the information server side and query your server to get it back

Follow-up:

Once you get your token you can do:

localStorage.setItem('myToken', $rootScope.jwtToken);

And when you load your application, check if a token has been stored:

$rootScope.jwtToken = localStorage.getItem('myToken');

edited May 25, 2016 at 16:14

answered May 24, 2016 at 14:21

floribon

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2 Comments

user3504187 Over a year ago

Could you also provide an example of how to use localStorage. I tried $window.sessionStorage.jwtToken , but it did not seem to work as the set value was not accessible on another controller. Currently I am setting the value in $rootScope and its accessible across the other controller. However on page refresh the token is lost and redirected to login page. Please advise.

floribon Over a year ago

@user3504187 I've added an example of how to use localStorage. Otherwise you can find that anywhere online: it is not related to Angular.

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