option.rb

class Option < ActiveRecord::Base
  attr_accessor :view_type, :comments_count, :expires_at_date, :expires_at_time

  before_save :set_expires_at
  after_save :set_reference, :set_default_room_allocation_name, :set_room_allocation_dates

 private

  def set_reference
    self[:reference] =  "OPT#{"%05d" % id}"
    self.send(:create_or_update_without_callbacks)
  end

  def set_expires_at
    if self.new_record?
    self.expires_at = Time.now.tomorrow.beginning_of_day + 12.hours
    else
      if (expires_at_date.present? || expires_at_time.present?)
        self.expires_at - Time.parse("#{expires_at_date.to_s} #{expires_at_time}")
      end
    end
  end

end