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Current File : C:/inetpub/vhost/redmine/db/migrate/20091017214406_add_missing_indexes_to_attachments.rb

class AddMissingIndexesToAttachments < ActiveRecord::Migration[4.2]
  def self.up
    add_index :attachments, [:container_id, :container_type]
    add_index :attachments, :author_id
  end

  def self.down
    remove_index :attachments, :column => [:container_id, :container_type]
    remove_index :attachments, :author_id
  end
end