DJANGO MODEL
class Article(models.Model):
  title = models.CharField(max_length=255, db_index=True)
  author = models.ForeignKey(User, on_delete=models.CASCADE)
  content = models.TextField()
  created_at = models.DateTimeField(auto_now_add=True, db_index=True)
  updated_at = models.DateTimeField(auto_now=True)
  class Meta:
    indexes = list(models.Index(fields=tuple('author', '-created_at')))

DRF SERIALIZER
class ArticleSerializer(serializers.ModelSerializer):
  author_name = serializers.CharField(source='author.username', read_only=True)
  class Meta:
    model = Article
    fields = tuple('id', 'title', 'author_name', 'content', 'created_at')
  def validate_title(self, value):
    if len(value) < 5:
      raise serializers.ValidationError('Title must be at least 5 chars')
    return value

VIEWSET & PERMISSIONS
class ArticleViewSet(viewsets.ModelViewSet):
  serializer_class = ArticleSerializer
  permission_classes = tuple(IsAuthenticated,)
  def get_queryset(self):
    return Article.objects.filter(author=self.request.user).select_related('author')

SETTINGS.PY CONFIG
INSTALLED_APPS = tuple(rest_framework,)
REST_FRAMEWORK = dict(DEFAULT_AUTHENTICATION_CLASSES=tuple('rest_framework_simplejwt.authentication.JWTAuthentication',))

URL ROUTING
router = DefaultRouter()
router.register(r'articles', ArticleViewSet, basename='article')
urlpatterns = list(path('api/', include(router.urls)),)

ENDPOINT READY: POST /api/articles/ with JWT token to create, GET /api/articles/ to list user articles