class UpdateUserfeebackMessageTime < ActiveRecord::Migration def up user_feedback_count = UserFeedbackMessage.all.count / 30 + 1 transaction do for i in 1 ... user_feedback_count do i UserFeedbackMessage.page(i).per(30).each do |ufm| if ufm.journals_for_message if ufm.journals_for_message.respond_to?("created_at") ufm.created_at = ufm.journals_for_message.created_at elsif ufm.journals_for_message.respond_to?("created_on") ufm.created_at = ufm.journals_for_message.created_on end puts ufm.id ufm.save user_feedback_messages = MessageAll.where("message_type = '#{ufm.class.to_s}' and message_id = '#{ufm.id}'").first user_feedback_messages.created_at = ufm.created_at user_feedback_messages.save end end end end end def down end end