title: HTML Forms without actions
body: <p>In Django / Pinax, I've come across the login form which starts like this :</p>
  
  <pre><code>&lt;form class="login" method="POST" action=""&gt;
  </code></pre>
  
  <p>It works perfectly well. So I assume that either some java-script or something in the Django framework is putting the value into the action attribute.
  <br />
  So, my questions: </p>
  
  <ul>
  <li>How does Django insert the action?</li>
  <li>Why do they do it like this?</li>
  <li>How can I find out what the action of this form is?</li>
  </ul>
  
  <p>Update : I see this is not a Django thing at all, but what most browsers do.</p>