from django.db.models import Case, When, Value # Return 'Yes' if the value of a field is greater than 10, and 'No' otherwise MyModel.objects.annotate( is_greater_than_ten=Case( When(my_field__gt=10, then=Value('Yes')), default=Value('No'), output_field=CharField(), ), )
from django.db.models import Case, When # Get all the instances of MyModel where the value of a field is greater than 10 MyModel.objects.filter( my_field=Case( When(my_field__gt=10, then=True), default=False, output_field=BooleanField(), ), )
from django.db.models import Case, When # Order queryset by the value of a field MyModel.objects.order_by( Case( When(my_field='value1', then=0), When(my_field='value2', then=1), default=2, output_field=IntegerField(), ), )In conclusion, Django.db.models Case is a powerful tool that can be used in a variety of ways to write complex queries and filters. It is a part of the Django ORM package and offers a lot of flexibility when working with databases.