title: Grails download file
body: <p>I'v used <a href="http://www.grails.org/Controllers+-+File+Uploads">this</a> method to copy a file to a folder in my project(first method), and I have edited it so the location is stored on my 'Location' in class Submissions (see below).</p>
  
  <p>Now I want to be able to, after clicking on an image in my view, download that file. How can I do that ?</p>
  
  <pre><code>class Submissions {
  
      Date dateSub
      String Location
      String fileName
  
  }
  </code></pre>