def value_to_db_datetime(self, value):
        if value is None:
            return None
        return unicode(value)
Getting the value of a known field succeeds.
dataset/ETHPy150Open dcramer/django-compositepks/django/db/backends/__init__.py/BaseDatabaseOperations.value_to_db_datetime--crossover with--dataset/ETHPy150Open ralphm/wokkel/wokkel/test/test_data_form.py/FormTest.test_get