null=True not detected in django model fields #1719
Description
Example:
class Group(models.Model):
name = models.TextField()
class Customer(models.Model):
name = models.TextField(null=True)
group = models.ForeignKey(
Group, on_delete=models.SET_NULL, null=True, related_name="customers"
)
def test():
c = Customer.objects.create()
c.name = None # <- `None` is not assignable to attribute `name` with type `str` [bad-assignment]
c.group = None # Works for ForeignKey