下载工作簿而不将其保存到Rails中的磁盘rubyxl

您可以将工作簿直接转换为字符串:

def get_worksheet_as_string
  workbook = RubyXL::Workbook.new
  # Fill workbook here or leave as is to download empty
  send_data workbook.stream.string, filename: "myworkbook.xlsx",
                                    disposition: 'attachment'
end