title: Django admin add form ajax call
body: <p>So I've had success with Django/Ajax/Jquery before but I was wondering if I can do it within the admin console. When the user goes to the "Add New" form, I want them to fill out the ZIP code and based on that zip code, filter the available choicies in the next field based upon the values I have in the database that correspond to that zip code. </p>
  
  <p>I'm trying to look for the admin view that handels the POST for that form but I'm relatively new to django and am having troubles locating it. Maybe I'm overthinking this and there is a easier solution?</p>