Django what is "objects" inside a Manager

Question

Normally I'd access the queryset via SomeModel.objects().

I notice that inside the model, the objects is defined to be some Manager, like, objects=SomeManager().

So, if I'm defining a method inside a Manager, how would I access objects?

As in...

class SomeManager(models.Manager):
    def some_method(self):
        ( HOW WOULD I ACCESS OBJECTS HERE? )

class SomeModel(models.Model):
    ... blah blah
    objects=SomeManager()

If I wanted to filter something, I suppose I could do SomeModel.objects.filter inside the manager, but somehow that feels weird. Would it be something like self.filter or something?

Answer 1

Yes, you would just use self.filter, where 'self' refers to the Manager itself. The default Manager for the model is objects, and it is automatically created if you don't specify a custom manager. Because you a doing a custom manager, you don't use objects, because obviously that would use the default one, and not your custom one.

So, from the Docs, an example would be:

class BookManager(models.Manager):
    def title_count(self, keyword):
        return self.filter(title__icontains=keyword).count()

class Book(models.Model):
    title = models.CharField(max_length=100)
    authors = models.ManyToManyField(Author)
    publisher = models.ForeignKey(Publisher)
    publication_date = models.DateField()
    num_pages = models.IntegerField(blank=True, null=True)
    objects = BookManager()