normalize_encode_params

# File actionpack/lib/action_dispatch/request/utils.rb, line 50
        def self.normalize_encode_params(params)
          case params
          when Array
            handle_array params
          when Hash
            if params.has_key?(:tempfile)
              ActionDispatch::Http::UploadedFile.new(params)
            else
              hwia = ActiveSupport::HashWithIndifferentAccess.new
              params.each_pair do |key, val|
                hwia[key] = normalize_encode_params(val)
              end
              hwia
            end
          else
            params
          end
        end