从Ruby on Rails中的链接下载视频

I'm working on a Ruby on Rails project which is using the liveclicker video player. To be able to add a downloading feature to my webapp, I've been implemented a link to be able, to download the video. I want to do that with a link_to and call a method inside the corresponding controller to download the video. Can anyone help me to implement my method to be able to download the video from that URL to my local machine?I'm working on a Ruby on Rails project which is