title: Returning non-predefined fields via. API with Tastypie in Django
body: <p>I am using Tastypie for non-ORM data source (Amazon Dynamodb). I have gone through the official <a href="http://django-tastypie.readthedocs.org/en/latest/non_orm_data_sources.html" rel="nofollow">documentation for non-ORM source</a> and found the following code:</p>
  
  <pre><code>class MessageResource(Resource):
      # Just like a Django ``Form`` or ``Model``, we're defining all the
      # fields we're going to handle with the API here.
      uuid = fields.CharField(attribute='uuid')
      user_uuid = fields.CharField(attribute='user_uuid')
      message = fields.CharField(attribute='message')
      created = fields.IntegerField(attribute='created')
  </code></pre>
  
  <p>I am new to Tastypie and what I understand is that fields uuid, message, created.. which are returned by API are defined over here. Is there any way that I return those fields that are not defined here i.e. all those fields returned by the dictionary in obj_get_list or obj_get.</p>