annotate db/migrate/20100313132032_add_issues_nested_sets_columns.rb @ 1092:d6e59c6f10bd
bibplugin_bibtex
design changes in the new publication forms
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luisf <luis.figueira@eecs.qmul.ac.uk> |
| date |
Mon, 26 Nov 2012 17:41:48 +0000 |
| parents |
cbb26bc654de |
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1 class AddIssuesNestedSetsColumns < ActiveRecord::Migration
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2 def self.up
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3 add_column :issues, :parent_id, :integer, :default => nil
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4 add_column :issues, :root_id, :integer, :default => nil
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5 add_column :issues, :lft, :integer, :default => nil
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6 add_column :issues, :rgt, :integer, :default => nil
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7
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8 Issue.update_all("parent_id = NULL, root_id = id, lft = 1, rgt = 2")
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9 end
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10
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11 def self.down
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12 remove_column :issues, :parent_id
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13 remove_column :issues, :root_id
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14 remove_column :issues, :lft
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15 remove_column :issues, :rgt
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16 end
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17 end
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