Run model check with Django 1.11 as deployment check only?

Dear Django group,

with Django 1.10, I used a model check like this:


class Status(models.Model):
id = models.AutoField(primary_key=True)
MAX_ID = 38
text = models.CharField(max_length=20, blank=True)

@classmethod
def check(cls, **kwargs):
errors = super(Status, cls).check(**kwargs)
maxID = cls.objects.aggregate(Max('id'))['id__max']

# The app sometimes computes histograms,
# so make sure that the Status.id values are as expected.
if cls.MAX_ID != maxID:
errors.append(checks.Warning(...))

return errors


This used to work well, considering that up to Django 1.10, this and other
checks weren't run along with `manage.py test`.
Now that Django 1.11 runs checks also with tests, the above check obviously
fails, because at the time the checks are run, the test database is still empty,
yielding `maxID = None`.

Declaring the above check as "at deployment only" seems to be a good resolution,
but is it possible to do that with a model (base-class based) check?

Best regards,
Carsten

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