Question

I have a model called Event that has many EventRegistrations, which belongs to a person.
Also the EventRegistration has many EventAtendees, which belongs to a person too.

I want to order in Rails all the people related to a event, which means:
– Person associated to an event registration
– Person associated to an event atendee which is associated to a registration..

Any help?

Answer 1

Here is how you would order by the person’s last name, assuming you have all your ActiveRecord associations set up correctly.

event_registrations = EventRegistrations.find(:all)

ordered_event_registrations = event_registrations.sort{|registration_a,registration_b|registration_a.people.lastname<=>registration_b.people.lastname}