what a better way to do this?

original.rb

      def set_account_id
        return false if BimbooAccount.current.nil?
        self.bimboo_account_id = BimbooAccount.current._id
      end

refactored_a.rb

def set_account_id
    !BimbooAccount.current.nil? and self.bimboo_account_id = BimbooAccount.current._id
end

refactored_b.rb

def set_account_id
   BimbooAccount.valid_current? and self.bimboo_account_id = BimbooAccount.current_id
end