I want to let a user click a link and download a pdf file, but send_file as follows leaves a stream of garbage in the canvas because FB is trying to render it as fbml:
send_file 'public/my_pdf.pdf', :type => 'application/pdf'
I also tried putting the pdf in the images directory and creating a link using image_path, but that failed as well.
I see Facebooker::Attachment, is that the tool to use?