Aborting navigation with Meteor iron-router

Question

I have a (client-side) router in a Meteor app, and links using the {{pathFor}} helper.

I am setting a dirty flag in the Session

Answer 1

The new behavior for iron router should make this easier because it requires a call to this.next() in the onBeforeAction hook (see iron router guide), so only call that when the session is not dirty or the user confirms the warning:

if(Session.get('dirty')) {
    if(confirm("Are you sure you want to navigate away?")) {
        this.next();
    }
} else {
    this.next();
}