option_text_and_value

# File actionpack/lib/action_view/helpers/form_options_helper.rb, line 509
        def option_text_and_value(option)
          # Options are [text, value] pairs or strings used for both.
          case
          when Array === option
            option = option.reject { |e| Hash === e }
            [option.first, option.last]
          when !option.is_a?(String) && option.respond_to?(:first) && option.respond_to?(:last)
            [option.first, option.last]
          else
            [option, option]
          end
        end