We're currently trying to replicate existing Sitebuilder customisations with SCA and finding that a lot of what we need to do is seemingly outside the bounds of the extensibility API. If, for example, I wanted to ensure email addresses were always lowercase for new account registrations, I can access form data in the LoginRegisterPage beforeRegister event, but the component appears not to have any methods. Is there any way we can modify the data and return it to the standard registration mechanism? beforeLogin is also a cancelable event, but is there any way to return an error which displays to the user via the standard method, without having to resort to jQuery DOM manipulation?

The point of cancellable events is focused on the first part: you want to stop something from happening. So, you if you want to stop a user from registering an account with an email that contains capital letters then yes this is the right method to use. Use the

beforeRegister

event and pass in a callback that tests for caps -- if it contains them then you need to return

jQuery.Deferred().reject()

.