The 'authenticated'
event is emitted after a successful authentication.
lock.on('authenticated', function(authResult) { });
But is there any way to detect when a new user signs up to your application or do I have to store the user in my database and check it each time a user authenticates?
The Auth0 Lock does not trigger a specific event for user signup.
You can however detect this on a custom rule and enrich the user profile with this metadata. There's a signup sample rule that illustrates this possibility
function (user, context, callback) {
user.app_metadata = user.app_metadata || {};
// short-circuit if the user signed up already
if (user.app_metadata.signed_up) return callback(null, user, context);
// execute first time login/signup logic here
// ...
// update application metadata so that signup logic is skipped on subsequent logins
user.app_metadata.signed_up = true;
auth0.users.updateAppMetadata(user.user_id, user.app_metadata)
.then(function () {
callback(null, user, context);
})
.catch(function (err) {
callback(err);
});
}
This uses app_metadata
to store information associated to the user so that you can keep track for which users you already executed their additional first-time signup logic.
Have in mind that rules will execute on the server-side of the authentication pipeline, so if the logic you want to implement requires user interaction you could achieve something similar by doing these set of steps:
app_metadata
to set a signup flag (you can do this on your server-side application logic through Auth0 Management API)If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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