class MigrateChartRule < ActiveRecord::Migration[5.2] def change ChartRule.all.each do |rule| if rule.competition com_module = rule.competition.competition_modules.find_by(module_type: "chart") if com_module && !com_module.competition_module_md_contents.exists?(competition_stage_id: rule.competition_stage_id ? rule.competition_stage_id : 0) CompetitionModuleMdContent.create!(content: rule.content, competition_module_id: com_module.id, competition_stage_id: rule.competition_stage_id ? rule.competition_stage_id : 0) end end end end end