middle_reflection

# File activerecord/lib/active_record/associations/builder/has_and_belongs_to_many.rb, line 63
    def middle_reflection(join_model)
      middle_name = [lhs_model.name.downcase.pluralize,
                     association_name.to_s].sort.join("_").gsub("::", "_").to_sym
      middle_options = middle_options join_model

      HasMany.create_reflection(lhs_model,
                                middle_name,
                                nil,
                                middle_options)
    end