What are Django custom model managers and when to use them?

Custom managers modify initial QuerySet or add extra manager methods. Use cases: • Filter default QuerySet • Add custom query methods • Modify model creation Example: class PublishedManager(models.Manager): def get_queryset(self): return super().get_queryset().filter(status='published') Benefits: • Encapsulate common queries • Improve code reusability • Cleaner model API