module ActionDispatch::Http::Parameters

def parse_formatted_parameters(parsers)
  return yield if content_length.zero? || content_mime_type.nil?
  strategy = parsers.fetch(content_mime_type.symbol) { return yield }
  begin
    strategy.call(raw_post)
  rescue # JSON or Ruby code block errors.
    log_parse_error_once
    raise ParseError, "Error occurred while parsing request parameters"
  end
end