db/migrate/20091205124427_add_versions_sharing.rb


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class AddVersionsSharing < ActiveRecord::Migration[4.2]
  def self.up
    add_column :versions, :sharing, :string, :default => 'none', :null => false
    add_index :versions, :sharing
  end

  def self.down
    remove_column :versions, :sharing
  end
end