gistfile1.rb

class Job < ActiveRecord::Base
  serialize :data
  serialize :exception
  
  named_scope :current_customer, lambda { { :conditions => { :customer_id => Customer.current.id } } }

  def self.spawn(person_id, data)
    customer = Customer.current
    job = create!(:person_id => person_id, :data => data)
    job.spawn do
      begin
        job.run
      rescue Exception => exception
        job.update_attribute(:exception, :class => exception.class.to_s, :message => exception.message, :backtrace => exception.backtrace.join("\n"))
      ensure
        job.update_attribute(:running, false)
      end
    end
    job
  end
  
private

  def update_data(hash)
    update_attribute(:data, data.merge(hash))
  end

end