title: Django: Formatting DateTimeField fields in JSON Serializer
body: <p>I have a model that has a few DateTimeFields and TimeFields, and I am serializing them to JSON using:</p>
  
  <pre><code>json.dumps({'items': list(items.values('id','date_time','time'))},cls=DjangoJSONEncoder)
  </code></pre>
  
  <p>But the items list shows the date_time field as date_time": "2013-12-25T17:00:00".</p>
  
  <p>How do I impose my own formatting for date_time or any DateTimeField/TimeField/DateField that gets JSON serialized?</p>
  
  <p>Thanks</p>