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I have a model and serializer that have some optional fields. Since 3.15 (maybe .1 but I haven't had a chance to use .0 due to different regressions) this field is suddenly required however, breaking our API.
Model, house_number_addition is optional:
class Address(models.Model):
street = models.CharField(max_length=255, blank=False, null=False)
house_number = models.IntegerField(blank=False, null=False)
house_number_addition = models.CharField(max_length=255, blank=True, null=True)
class Meta:
constraints = [
models.UniqueConstraint(
fields = ["street", "house_number", "house_number_addition"],
name="%(app_label)s_%(class)s_unique",
)
]Serializer:
class AddressSerializer(serializers.ModelSerializer):
class Meta:
model = Address
fields = ["id", "street", "house_number", "house_number_addition",]View:
class AddressAPIView(ListCreateAPIView):
serializer_class = AddressSerializer
queryset = Address.objects.all().order_by("pk")Test:
class AddressTestCase(APITestCase):
def test_add_address_succeeds(self):
response: Response = self.client.post("<url>", data={"street": "Test street", "house_number": 1}, format="json")
self.assertEqual(response.status_code, status.HTTP_201_CREATED)It works however if I modify the test to send data={"street": "Test street", "house_number": 1, "house_number_addition": None}. However that basically breaks API as our clients weren't required to specify the field at all before.
EDIT: I edited the AddressModel from my original post to include the UniqueConstraint I use which seems to be the cause of the issue here.
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