Delayed::Job trickery

recreate_activerecord_models.rb

# Recreate ActiveRecord models from Delayed Job jobs.

# Ensure that we recreate the full model
ActiveRecord::Base.partial_updates = false

Delayed::Job.all.each do |job|
  # Deserialize the Delayed Job handler. As we've been using the `.delay` syntax
  # and no custom jobs, this returns a Delayed::PerformableMethod
  pfm = YAML.load(job.handler)

  # Delayed::PerformableMethod#object returns the original object that we called
  # `delay` on. That object has a reference to the ActiveRecord model we're
  # interested in.
  stt = pfm.object.seo_text_template

  # Trick ActiveRecord into not believing this record has already been
  # persisted.
  def stt.new_record?; true; end

  # Save the record with its current id unless we've already recreated it
  stt.save unless SeoTextTemplate.find_by_id(stt.id)
end

reenqueue_delayed_jobs.rb

# Re-enqueue failed (well, all) jobs
jobs = Delayed::Job.all
jobs.update_all(:locked_at => nil, :locked_by => nil, :failed_at => nil)