Question

First time using rails, I’m trying to create a download link to get something off the file system.

In my view, I’ve got

<%= link_to 'Show', upload, :method => :download %>

and my ‘download’ method in my controller looks like:

def download
   @upload = Upload.find(params[:id])
   send_file '/data_store/50692.pdf'

This is needed because I have restrictions on who can view this pdf, but on this page, I get linked to

http://localhost:3000/uploads/10

(10 is the id of this ‘upload’)

and on that page, I get the error

    Unknown action

No action responded to 10. Actions: clearance, create, destroy, download, edit, index, is_admin, new, show, su_required, and update

I want it instead to stay on the same page, and offer the user a download prompt, but I’m not sure what I’m doing wrong.

Answer 1

I think it is a problem in the calling download method.

Try this one

<%= link_to "Show",:controller=>'controllername',:action=>'download',:id=>upload.id %>

You must pass your controller name in the place “controllername”.