Using the multipart-post gem to POST a file to Crocodoc

gistfile1.rb

# via https://github.com/nicksieger/multipart-post's README, with a tweak to force SSL
require 'net/http/post/multipart'

uri = URI.parse('https://crocodoc.com/api/v1/document/upload')

res = File.open('./tmp/filename.jpg', 'rb') do |file|
  req = Net::HTTP::Post::Multipart.new(uri.path,
    'file' => UploadIO.new(file, nil),
    'token' => APP_CONFIG['crocodoc_token'])
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  http.request(req)
end

crocodoc_res = JSON.parse(res.body)

if crocodoc_res.has_key?('error')
  ...
else
  ...
end