instance method multipart_requestify

# File actionpack/lib/action_controller/integration.rb, line 417
        def multipart_requestify(params, first=true)
          Array.new.tap do |p|
            params.each do |key, value|
              k = first ? key.to_s : "[#{key.to_s}]"
              if Hash === value
                multipart_requestify(value, false).each do |subkey, subvalue|
                  p << [k + subkey, subvalue]
                end
              elsif Array === value
                value.each do |element|
                  if Hash === element || Array === element
                    multipart_requestify(element, false).each do |subkey, subvalue|
                      p << ["#{k}[]#{subkey}", subvalue]
                    end
                  else
                    p << ["#{k}[]", element]
                  end
                end
              else
                p << [k, value]
              end
            end
          end
        end