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- 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
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