db/migrate/20090315105326_add_references_revisions_constraint.rb


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class AddReferencesRevisionsConstraint < ActiveRecord::Migration
  def self.up
    execute "ALTER TABLE `references` ADD CONSTRAINT references_revisions_revisionid FOREIGN KEY (revision_id) REFERENCES revisions (id)"
  end

  def self.down
    execute "ALTER TABLE `references` DROP FOREIGN KEY references_revisions_revisionid"
  end
end