Mercurial > hg > soundsoftware-site

view db/migrate/20100313132032_add_issues_nested_sets_columns.rb @ 36:de76cd3e8c8e cc-branches

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
* Probably abortive experiments in extracting the branch from Hg
author Chris Cannam <chris.cannam@soundsoftware.ac.uk>
date Wed, 20 Oct 2010 10:07:29 +0100
parents 513646585e45
children cbb26bc654de
line wrap: on
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