You can try something like this :
class UserInfo < ActiveRecord::Base
attr_accessible :URL, :name, :codetype, :codesnippet, ;code
validates :name, :presence => true
validates :URL, :presence => true
validates :name, :format => { :with => /\A[a-zA-Z]+\z/, :message => "Only letters allowed" }
def code
codetype + '-' + codesnippet #suppose you are joining both values with a hiphen in between
end
def code=(codetype, codesnippet)
self.code = codetype + '-' + codesnippet
end
end