rails 3 - Raising an exception? Using Begin, Rescue and Raising Expections

I'm getting the following error:

MailingJob failed with NameError: uninitialized constant MailingJob::MissingInfo - 2 failed attempts

My code:开发者_Python百科

class MailingJob < Struct.new(:mailing_id)
  def perform
    begin
       @message_reply = ....
       raise MissingInfo, "Message reply not found" if @message_reply.length == 0
       .....
    rescue MissingInfo => detail
        Rails.logger.info "RESCUED - MissingInfo,RESCUED - MissingInfo, RESCUED - MissingInfo, RESCUED - MissingInfo, RESCUED - MissingInfo"
        Rails.logger.info detail
    end

  end

This is my first time using begin/rescue, suggestions,help? Thanks

You are attempting to use an undefined constant. You must define the exception class:

class MissingInfo < StandardError; end

Secondly, I wouldn't rely on the logs to capture the errors. Instead, I would use a service such as Hoptoad for that.