comentarios_legados_migrations.rb

class ComentariosLegadosMigrations < ActiveRecord::Migration
    MIGRATIONS_PATH='db/migrate/comentarios_legados_migrations'

    def self.up
      Dir["#{MIGRATIONS_PATH}/[0-9]*_*.rb"].
      sort.map{|filename|require filename}.flatten.
      each{|class_name| const_get(class_name).up}
    end

    def self.down
      Dir["#{MIGRATIONS_PATH}/[0-9]*_*.rb"].sort.reverse.
      map{|filename|require filename}.flatten.
      each{|class_name| const_get(class_name).down}
    end
end