Rails 'link_to' to Download An Image Immediately Instead of Opening it in the Browser

Question

I have a link_to Rails helper that downloads a wallpaper when clicked. But the image is loading in the browser instead of being downloaded immediately.

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Answer 1

Rails 3 / 4:

in routes:

get "home/download_pdf"

in controller:

def download_pdf
  send_file(
    "#{Rails.root}/public/your_file.pdf",
    filename: "your_custom_file_name.pdf",
    type: "application/pdf"
  )
end

in view:

<%= link_to 'Download PDF', home_download_pdf_url %>