self._output_field = NaiveDateTimeField()
elif value_field is None:
value_expr = self.get_source_expressions()[0]
if isinstance(value_expr, Value):
if timezone.is_naive(value_expr.value):
self._output_field = DateTimeField()
else:
self._output_field = NaiveDateTimeField()
return getattr(self, "_output_field", None)
_monkeypatching = False
_this_module = sys.modules[__name__]
_db_functions = sys.modules["django.db.models.functions"]
_lookups = set(DateTimeField.get_lookups().values())
_patch_classes = [
(Extract, [NaiveAsSQLMixin, NaiveTimezoneMixin]),
(TruncBase, [NaiveAsSQLMixin, NaiveTimezoneMixin, NaiveConvertValueMixin]),
]
for original, mixins in _patch_classes:
for cls in original.__subclasses__():
bases = tuple(mixins) + (cls, )
naive_cls = type(cls.__name__, bases, {})
if _monkeypatching:
setattr(_db_functions, cls.__name__, naive_cls)
if cls in _lookups:
NaiveDateTimeField.register_lookup(naive_cls)
