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class AddIssuesNestedSetsColumns < ActiveRecord::Migration |
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def self.up |
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add_column :issues, :parent_id, :integer, :default => nil |
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add_column :issues, :root_id, :integer, :default => nil |
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add_column :issues, :lft, :integer, :default => nil |
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add_column :issues, :rgt, :integer, :default => nil |
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Issue.update_all("parent_id = NULL, root_id = id, lft = 1, rgt = 2")
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end |
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def self.down |
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remove_column :issues, :parent_id |
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remove_column :issues, :root_id |
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remove_column :issues, :lft |
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remove_column :issues, :rgt |
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end |
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end |