django - query filter on manytomany is empty

Question

In Django is there a way to filter on a manytomany field being empty or null.

class TestModel(models.Model):
    name = models.CharField(_(\'set name\'), max         


        

Answer 1

Adding to @Bernhard answer, other possible solution can be achieved using the Q() object.

from django.db.models import Q

filters = Q(manytomany=None)

TestModel.objects.filter(filters)

Negation:

filters = ~Q(manytomany=None)

TestModel.objects.filter(filters)

Answer 2

print TestModel.objects.filter(manytomany=None)