unexpected download popup

rubyonrails-talk
1

I'm creating some pdfs using PDF::Writer:

def my_action   invoice_pdf = render_to_string(:action => '../orders/ invoice.rpdf', :layout => false)   path = ...   File.open(path, "wb") {|f| f.write invoice_pdf} end

At the end of the action, my_action.html.erb should be rendered. But I'm getting an unexpected download popup:

(controller-name).pdf type: Adobe Acrobat Document, 11.2 kb

thanks, Luma