render_collection

# File actionview/lib/action_view/helpers/tags/collection_helpers.rb, line 76
          def render_collection
            @collection.map do |item|
              value = value_for_collection(item, @value_method)
              text  = value_for_collection(item, @text_method)
              default_html_options = default_html_options_for_collection(item, value)
              additional_html_options = option_html_attributes(item)

              yield item, value, text, default_html_options.merge(additional_html_options)
            end.join.html_safe
          end