title: How to get the full url for an asset in Controller?
body: <p>I need to generate some JSON content in controller and I need to get the full URL to an uploaded image situated here : <code>/web/uploads/myimage.jpg</code>.</p>
  
  <p>How can I get the full url of it? </p>
  
  <p><code>http://www.mywebsite.com/uploads/myimage.jpg</code></p>