      """
      A field that represents the model's identity using a hyperlink.
      """
      def __init__(self, *args, **kwargs):
          # TODO: Make this mandatory, and have the HyperlinkedModelSerializer
          # set it on-the-fly
          self.view_name = kwargs.pop('view_name', None)
          self.format = kwargs.pop('format', None)
          super(HyperlinkedIdentityField, self).__init__(*args, **kwargs)
  
      def field_to_native(self, obj, field_name):
 
</s> remove     A field that represents the model's identity using a hyperlink.
 </s> add     Represents the instance, or a property on the instance, using hyperlinking. </s> remove     Serializes a to-many related field or related manager to a pk value.
 </s> add     Represents a to-many relationship as a pk value.
        # TODO: Make view_name mandatory, and have the
        # HyperlinkedModelSerializer set it on-the-fly
      """
      A field that represents the model's identity using a hyperlink.
      """
      def __init__(self, *args, **kwargs):
        # TODO: Make view_name mandatory, and have the
        # HyperlinkedModelSerializer set it on-the-fly
        # TODO: Make view_name mandatory, and have the
        # HyperlinkedModelSerializer set it on-the-fly
          self.view_name = kwargs.pop('view_name', None)
          self.format = kwargs.pop('format', None)
          super(HyperlinkedIdentityField, self).__init__(*args, **kwargs)
  
      def field_to_native(self, obj, field_name):
keep keep keep keep replace replace keep keep keep keep keep
 Relational field support in browseable API.

Add slug relational fields.
Add quickstart. 
rest_framework/fields.py