Prawn + Prawnto Issue
===

I know prawn is working because I have a show action that if I add .pdf on to the end of it loads show.pdf.prawn. However, I have a form:

     <%= form_tag(:controller => "/holders", :action=> "generate", format: "pdf") do %>
          <%= label_tag(:count, "How Many Students?") %>
          <%= text_field_tag(:count) %>
          <%= hidden_field_tag :holder_id, value: @holder%>
          <%= submit_tag("Generate Course Lesson") %>
        <% end %>

That submits count to the the generate action.

Inside my generate action I have the following:

    	def generate
    		prawnto :filename => "print.pdf"
    		respond_to do |format|
          format.html
          format.pdf { render :layout => false}
        end
      end

and my generate.pdf.prawn looks like:

    pdf.text "HELLO WORLD"

When I submit the form I get the URL: `http://localhost:3000/generate.pdf` and Chrome tells me 
`Failed to load PDF document` with no other errors or information.

What am I doing wrong?

