使用ruby on rails将映像存储在内存或浏览器缓存中

Question

Now in my rails app i have stored one image from url,that stored in my system tmp folder. But the problem is i am using heroku to running this rails app, so how will be the storing process when running with heroku?

def mail
@image = https://chart.googleapis.com/chart?chs=150x150&cht=qr&chl=5&choe=UTF-8
path_image = "/tmp/img.png"
open(@image) do |chart|
 File.open(path_image, 'wb') {|f| f.write chart.read }
end
welcome(path_image)
end

Thanks

Answer 1

如Heroku的开发中心所述 ，您可以将临时文件存储在#{RAILS_ROOT}/tmp/ （Rails 2）或Rails.root.join('tmp') （Rails 3）目录中。