build_tag_values

# File actionview/lib/action_view/helpers/tag_helper.rb, line 403
        def build_tag_values(*args)
          tag_values = []

          args.each do |tag_value|
            case tag_value
            when Hash
              tag_value.each do |key, val|
                tag_values << key.to_s if val && key.present?
              end
            when Array
              tag_values.concat build_tag_values(*tag_value)
            else
              tag_values << tag_value.to_s if tag_value.present?
            end
          end

          tag_values
        end