Confirm the presence of one field or another (OR)

Question

So, I am looking at the link, but I am wondering how to do "OR" instead of "XOR". Does anyone know how to do this? I am trying to do this with Rails 3.

Answer 1

I get it. all you need to change is ^ to &&

private def time_or_money if time.blank? && money.blank? errors[:base] << "Specify Time, Money or Both." end end 

Answer 2

There is a short option for Rails 4 (not sure about Rails 3):

 validates :email, presence: { if: -> { username.blank? } } validates :username, presence: { if: -> { email.blank? } }