title: customizing admin of django to have dependent select fields
body: <p>I am new in django , I am developing admin panel first for my site. I need to have dependent select fields, so that after selecting country, user will be able to select city. I want that when I select country then cities of that country options load in city select box but I don't know how to customize django admin. I have done so in JS, using AJAX and PHP. So I know how to do it manually but don't know how to use ajax in django and how to customize it. </p>
  
  <p>On some other questions I read that one should read, django documentation, so I tried to read and find at admin documentation but couldn't found way to customize django admin panel. Do I need to customize full page for those select boxes? Or please tell that how can I add some jquery code to it so that I can do it via JS?</p>