class BackfillStatusNestLevel < ActiveRecord::Migration[5.2] disable_ddl_transaction! def up Rails.logger.info("Populating nest levels for orphaned replies...") Status.select(:id, :account_id).where(reply: true, in_reply_to_id: nil).reorder(nil).in_batches.update_all(nest_level: 1) count = 1.0 total = Conversation.count Conversation.reorder('conversations.id DESC').find_each do |conversation| Rails.logger.info("(#{(count/total*100).to_i}%) Populating nest levels for threads...") conversation.statuses.where(reply: true).reorder('statuses.id ASC').find_each do |status| level = [status.thread&.account_id == status.account_id ? status.thread&.nest_level.to_i : status.thread&.nest_level.to_i + 1, 127].min status.update(nest_level: level) if level != status.nest_level end count += 1 end end def down true end end