Chris@1517: class DeleteOrphanTimeEntriesCustomValues < ActiveRecord::Migration
Chris@1517:   def up
Chris@1517:     CustomValue.where("customized_type = ? AND NOT EXISTS (SELECT 1 FROM #{TimeEntry.table_name} t WHERE t.id = customized_id)", "TimeEntry").delete_all
Chris@1517:   end
Chris@1517: 
Chris@1517:   def down
Chris@1517:     # nop
Chris@1517:   end
Chris@1517: end