The $resources headers have not been updated

My objective is to include a header with each HTTP request for an ngResource (specifically, an auth token).

This solution somewhat accomplishes that:

app.factory('User', ['$resource','$window',
  function($resource,$window,liftHost, liftBasePath) {

     return $resource('/api/users/:id',{},{ 
      get: {
               method: 'GET',
               headers: {'token': $window.sessionStorage.token}
          }

     });
  }]);

The issue with this code is that after the initial call, subsequent GET requests will have the same header value. The header does not get updated dynamically. So, if a user logs out and then logs back in, changing the value of $window.sessionStorage.token, the request will still use the old token.

I have put together a small plunker using $httpBackend mocks to demonstrate this problem.

Check it out here: http://plnkr.co/edit/xYZM6wlDJ6CH2BPHLZAC?p=preview

javascriptangularjs

Answer №1

Check out this code sample on how to implement TokenService in AngularJS.

I created a TokenService that is injected into the User and Session services, making the code cleaner without relying on the $window service. Additionally, I changed the token from a primitive string to an object for passing by reference rather than value.

app.factory('Token', [
  function() {
    return {
      value: "xyz"
    }
  }
]);

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