RSS promotion default migrations

gistfile1.rb

#   This migration will loop through all RssPromotions and ensure that the default values from the 'unsent'
#   mailing are correctly migrated to the new defaults created for RssPromotions, specifically:
#     - new fields on the rss_promotion
#     - rss_promotion has_and_belongs_to_many :audience_lists
#     - rss_promotion has_and_belongs_to_many :audience_members

migrated_count = 0

RssPromotion.find_each do |rss_promotion|
  mailing = rss_promotion.mailing
  migrated = false

  if rss_promotion.subject.blank?
    rss_promotion.update_attributes(:from_address => mailing.from_address, :subject => mailing.subject, :all_audience => mailing.all_audience, :disable_link_tracking => mailing.disable_link_tracking)
    migrated = true
  end

  if rss_promotion.audience_lists.blank? && mailing.audience_lists.present?
    rss_promotion.audience_lists = mailing.audience_lists
    rss_promotion.save
    migrated = true
  end

  if rss_promotion.audience_members.blank? && mailing.potential_audience_members.present?
    rss_promotion.audience_members = mailing.potential_audience_members
    rss_promotion.save
    migrated = true
  end

  if migrated
    puts "Migrated RSS Promotion #{rss_promotion.id}."
    migrated_count += 1
  end
end

puts "Migrated #{migrated_count} RSS promotions in total."