Question

Let’s say I have 2 models, one being the parent of another. How can I query all Places that aren’t restaurants in Django? Place.objects.all() would include all restaurants right? I want to exclude the children from the results. Thank you!

class Place(models.Model):
    name = models.CharField(max_length=50)
    address = models.CharField(max_length=80)

class Restaurant(Place):
    serves_hot_dogs = models.BooleanField()
    serves_pizza = models.BooleanField()

Answer 1

According to the documentation, you can check for the existence of the lowercase model name as an attribute:

places = Place.objects.all()
not_restaurants = [p for p in places if not hasattr(p, 'restaurant')]