Ruby / Nokogiri / Mechanize: How to download XLS file?

Question

I have to make a request to a page www.example.com/xls_file which sends a file. I have Nokogiri and Mechanize available. How would I download the file and save it locally?

def file
  grab_file if !File.exists?("sales_data.csv")
  File.open("sales_data.csv")
end

def grab_file
  # What do I do here?
  # Nokogiri::HTML(open("http://www.example.com/xls_file"))
end

Answer 1

require 'open-uri'

File.open('any_name_here.xls', 'wb') do |file|
 file << open('http://www.example.com/xls_file.xls').read
end

If the site you want to get the file from starts with https:// then you might want to add the following things to avoid Ruby reporting SSL errors:

require 'open-uri'
require 'openssl'

File.open('any_name_here.xls', 'wb') do |file|
  file << open('https://www.example.com/xls_file.xls', ssl_verify_mode: OpenSSL::SSL::VERIFY_NONE).read
end