      title = models.CharField(max_length=100)
  
  
  class BlogPostComment(RESTFrameworkModel):
      text = models.TextField()
      blog_post = models.ForeignKey(BlogPost)
  
  
 
</s>
    def get_first_comment(self):
        return self.blogpostcomment_set.all()[0]

      title = models.CharField(max_length=100)
  
    def get_first_comment(self):
        return self.blogpostcomment_set.all()[0]

  
  class BlogPostComment(RESTFrameworkModel):
      text = models.TextField()
      blog_post = models.ForeignKey(BlogPost)
  
  
keep add keep keep keep keep keep keep
 Fix related serializers with source argument that resolves to a callable
rest_framework/tests/models.py