I am trying to prevent multiple registrations by the same person for events. Is it possible to make it work with custom code?
Working in
Wix Events
If you’re referring to RSVPs for events, the system will let users know they already RSVP’d.
I didn’t build it out but there is a function to query guests which you could use to retrieve all guests and then match them to look for a logged-in member and perhaps collapse the section with the event details and show information stating they’ve already purchased.
I would mention before that though that if a user might want to legitimately purchase additional tickets, you’d be preventing them from doing so which might not be the best user experience if not communicated effectively.