Chris@0: class AllowNullPosition < ActiveRecord::Migration
Chris@0:   def self.up
Chris@0:     # removes the 'not null' constraint on position fields
Chris@0:     change_column :issue_statuses, :position, :integer, :default => 1, :null => true
Chris@0:     change_column :roles, :position, :integer, :default => 1, :null => true
Chris@0:     change_column :trackers, :position, :integer, :default => 1, :null => true
Chris@0:     change_column :boards, :position, :integer, :default => 1, :null => true
Chris@0:     change_column :enumerations, :position, :integer, :default => 1, :null => true
Chris@0:   end
Chris@0: 
Chris@0:   def self.down
Chris@0:     # nothing to do
Chris@0:   end
Chris@0: end