def POST
      fetch_header("action_dispatch.request.request_parameters") do
        pr = parse_formatted_parameters(params_parsers) do |params|
          super || {}
        end
        self.request_parameters = Request::Utils.normalize_encode_params(pr)
      end
    rescue Rack::Utils::ParameterTypeError, Rack::Utils::InvalidParameterError => e
      raise ActionController::BadRequest.new("Invalid request parameters: #{e.message}")
    end
def POST
      fetch_header("action_dispatch.request.request_parameters") do
        pr = parse_formatted_parameters(params_parsers) do |params|
          super || {}
        end
        self.request_parameters = Request::Utils.normalize_encode_params(pr)
      end
    rescue Rack::Utils::ParameterTypeError, Rack::Utils::InvalidParameterError => e
      raise ActionController::BadRequest.new("Invalid request parameters: #{e.message}")
    end
Override Rack's POST method to support indifferent access.