Question

Using meteor, I’d like to be able to augment a user record after they’ve logged in (authenticated) with an external service to get their authorization claims.

Update
I am using the {{loginButtons}} handlebars helper widget.

Currently, I see an Accounts.validateNewUser and an Accounts.onCreateUser that can be hooked into during the creation of a new user. These would be helpful initially, but my need is recurrent.

I understand that there is the allow function that hangs off the Meteor.Collection as a means of authorizing a user’s access to the collection — which is precisely where I would use the claims that I intend to augment the user with to determine authorization.

Does anyone know of a hook during the login process that would allow me to do this?

Answer 1

The easiest way to get around the lack of a callback is to use the relevant reactive variable:

Tracker.autorun(function() {
  if (Meteor.userId()) {
    // do something when they've just logged in.
  }
});

The context setup by autorun will only re-run when the value of Meteor.userId() changes — i.e. when they login.