From: Lyle Johnson <lyle@...>
Date: 2008-04-03T06:18:20+09:00
Subject: Re: ruby constructor return value?

On Wed, Apr 2, 2008 at 4:08 PM, Brendan Stennett <brendan6@gmail.com> wrote:

> How do I alert an error if it occurs in an object's constructor?

Raise an exception.

    class Zip
      def initialize(zipcode)
        o = Zipcode.find_by_zipcode(zipcode)
        if o.length == 0
          raise ArgumentError, "no zip code specified"
        else
          @zipcode = zipcode
        end
      end
    end

    begin
      o = Zip.new('00000')
    rescue ArgumentError
      # deal with the error here
    end

Hope this helps,

Lyle