MeasureUnitCache.rb

# coding: utf-8
class MeasureUnitCache
  include Singleton

  def self.find_similar_to_name(name)
    instance.data[name]
  end

  private

  def data
    unless defined? @data
      @data = {}
      MeasureUnit.all.each_with_object(@data) { |mu, result| result[mu.name.gsub(/\.+$/, '')] = mu }
    end

    @data
  end
end