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view db/migrate/20100313132032_add_issues_nested_sets_columns.rb @ 1176:7d9db6065048 bug_352

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Close obsolete branch bug_352
author Chris Cannam
date Wed, 01 Feb 2012 16:09:00 +0000
parents 513646585e45
children cbb26bc654de
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line source
class AddIssuesNestedSetsColumns < ActiveRecord::Migration
  def self.up
    add_column :issues, :parent_id, :integer, :default => nil
    add_column :issues, :root_id, :integer, :default => nil
    add_column :issues, :lft, :integer, :default => nil
    add_column :issues, :rgt, :integer, :default => nil
    
    Issue.update_all("parent_id = NULL, root_id = id, lft = 1, rgt = 2")
  end

  def self.down
    remove_column :issues, :parent_id
    remove_column :issues, :root_id
    remove_column :issues, :lft
    remove_column :issues, :rgt
  end
end