title: Fill up and update an uploaded PDF form online and save it back to the server - Ruby on Rails
body: <p>Here is the requirement:</p>
  
  <p>In my web-app developed in Ruby on Rails, we require to have an option to upload a <code>PDF form template</code> to the system, take it back in the browser itself and the user should be able to fill up the PDF form online and finally save it back to the server.</p>
  
  <p>Then, user will come and download the updated PDF form from the application. I've searched a lot but couldn't find a proper solution to it. Please suggest.</p>