view db/migrate/021_add_tracker_position.rb @ 436:4eb486dbf730 bug_169

If the remote repo URL changes, move aside the existing local mirror and start afresh.
(Not yet tested: checkpointing this prior to working on a different aspect of the problem)

class AddTrackerPosition < ActiveRecord::Migration
  def self.up
    add_column :trackers, :position, :integer, :default => 1
    Tracker.find(:all).each_with_index {|tracker, i| tracker.update_attribute(:position, i+1)}
  end

  def self.down
    remove_column :trackers, :position
  end
end