title: How can I get the parent object in Django Rest Framework serializer
body: <p>I have this model:</p>
  <pre><code>class Track(models.Model):
      album = models.ForeignKey(Album)
  </code></pre>
  <p>Now in my <code>TrackSerializer</code> I want to get the name of album.</p>
  <pre><code>class TrackSerializer(serializers.ModelSerializer):
  
      class Meta:
          model = Track
          fields = ('album__name')
  </code></pre>
  <p>It's not working.</p>
  <p>I don't want to declare AlbumSerializer for that. Is there any way to do that without declaring a new serializer?</p>