class PopulateChangesetsUserId < ActiveRecord::Migration def self.up committers = Changeset.connection.select_values("SELECT DISTINCT committer FROM #{Changeset.table_name}") committers.each do |committer| next if committer.blank? if committer.strip =~ /^([^<]+)(<(.*)>)?$/ username, email = $1.strip, $3 u = User.find_by_login(username) u ||= User.find_by_mail(email) unless email.blank? Changeset.update_all("user_id = #{u.id}", ["committer = ?", committer]) unless u.nil? end end end def self.down Changeset.update_all('user_id = NULL') end end