db/migrate/20140213053001_add_event_id_at_creation_to_links.rb

@@ -1,8 +1,11 @@

                 class AddEventIdAtCreationToLinks < ActiveRecord::Migration
              

                +  class Link < ActiveRecord::Base; end
              

                +  class Event < ActiveRecord::Base; end
              

                +
              

                   def up
              

                     add_column :links, :event_id_at_creation, :integer, :null => false, :default => 0
              

                 
              

                -    Link.all.each do |link|
              

                +    Link.all.find_each do |link|
              

                       last_event_id = execute(
              

                         <<-SQL
              

                           SELECT #{ActiveRecord::Base.connection.quote_column_name('id')}