In Ruby on Rails, After send_file method delete the file from server

Question

I am using following code for sending the file in Rails.

if File.exist?(file_path)
  send_file(file_path, type: \'text/excel\') 
  File.delete(file_path)
end
         


        

Answer 1

If you are generating on the fly the file you are trying to send, a solution is to use the Tempfile class:

begin
  # The second argument is optional:
  temp_file = Tempfile.new(filename, temp_directory)

  # ... edit temp_file as needed.

  # By default, temp files are 0600,
  # so this line might be needed depending on your configuration:
  temp_file.chmod(0644)
  send_file temp_file
ensure
  temp_file.close
end

Contrary to what is indicated in this question, this works as expected (the file stays on the server long enough to be served, but ultimately gets deleted); this post seems to indicate this is due to updates in Rails 3.2.11, something I couldn’t verify.