从 ruby​​ on rails 中的 URL 下载视频 [英] Download video from URL in ruby on rails

问题描述

目前我正在使用系统命令 wget 下载视频并存储在我们的服务器中:

Currently I am using system command wget to download the video and store in our server:

system("cd #{RAILS_ROOT}/public/users/familyvideos/thumbs && wget -O sxyz1.mp4 #{video.download_url}")

但它说:

cd: 1: can't cd to /var/home/web/***.com/public/users/familyvideos/thumbs

有人知道吗?另请提供替代选项来执行此操作.

Anybody has any idea? Also please provide alternative option to do this.

推荐答案

一个更好的解决方案是为此使用 open-uri.

A much better solution would be to use open-uri for this.

http://www.ruby-doc.org/stdlib/libdoc/open-uri/rdoc/

这个片段应该可以解决问题:

This snippet should do the trick:

url = video.download_url
new_file_path = "#{Rails.root.to_s}/public/users/familyvideos/thumbs/your_video.mp4"
open(new_file_path, "wb") do |file| 
  file.print open(url).read
end

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