Print a PDF directly after prawnto with iframes

rubyonrails-talk
1

Hi,

I think I'm very near of accomplishing this but I have a problem. This is the code:

<%- content_for :head do -%>   <script type="text/javascript" charset="utf-8">     function printPDF(){       var pdf = document.getElementById("pdfDoc").contentWindow;       pdf.focus();       pdf.print();     }   </script> <%- end -%>

<iframe src="/aaa.pdf" id="pdfDoc" name="pdfDoc"></iframe>

<li><%= link_to 'Print', {:controller => 'receipt', :action => 'print', :id => @receipt.id, :format => 'pdf'}, :target => 'pdfDoc' %></li>

And the print action:

  def print     @receipt= Receipt.find(params[:id])     prawnto :inline => true, :filename => "receipt_#{@receipt.codigo}"   end

Now when I click in the link 'Print' the iframe is reloaded with the pdf generated by prawn but I don't know how to call then the printPDF javascript function. If I just could call this javascript from the controller (with ajax) or from the view with javascript after the iframe is reloaded I would solve my problem.

Any help will be really appreciated!