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- class AddEnumerationsPosition < ActiveRecord::Migration
- def self.up
- add_column(:enumerations, :position, :integer, :default => 1) unless Enumeration.column_names.include?('position')
- Enumeration.all.group_by(&:opt).each do |opt, enums|
- enums.each_with_index do |enum, i|
- # do not call model callbacks
- Enumeration.where({:id => enum.id}).update_all(:position => (i+1))
- end
- end
- end
-
- def self.down
- remove_column :enumerations, :position
- end
- end
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