def to_python(self, value):
if not backportTimeZone():
return super(DateTimeUtcField, self).to_python(value)
if value is None:
return value
if isinstance(value, datetime.datetime):
if timezone.is_naive(value):
value = timezone.make_aware(value, timezone.utc)
return value
if isinstance(value, datetime.date):
value = datetime.datetime(value.year, value.month, value.day)
if settings.USE_TZ:
# For backwards compatibility, interpret naive datetimes in
# local time. This won't work during DST change, but we can't
# do much about it, so we let the exceptions percolate up the
# call stack.
warnings.warn(
u"DateTimeField received a naive datetime (%s)"
u" while time zone support is active."
u" Converting from default time zone to UTC." % value,
RuntimeWarning)
default_timezone = timezone.get_default_timezone()
value = timezone.make_aware(value, default_timezone)
return value
value = smart_str(value)
try:
parsed = parse_datetime(value)
if parsed is not None:
return parsed
except ValueError:
msg = self.error_messages['invalid_datetime'] % value
raise exceptions.ValidationError(msg)
try:
parsed = parse_date(value)
if parsed is not None:
return datetime.datetime(parsed.year, parsed.month, parsed.day)
except ValueError:
msg = self.error_messages['invalid_date'] % value
raise exceptions.ValidationError(msg)
msg = self.error_messages['invalid'] % value
raise exceptions.ValidationError(msg)
def to_python(self, value):
if not backportTimeZone():
return super(DateTimeUtcField, self).to_python(value)
if value is None:
return value
if isinstance(value, datetime.datetime):
if timezone.is_naive(value):
value = timezone.make_aware(value, timezone.utc)
return value
if isinstance(value, datetime.date):
value = datetime.datetime(value.year, value.month, value.day)
if settings.USE_TZ:
# For backwards compatibility, interpret naive datetimes in
# local time. This won't work during DST change, but we can't
# do much about it, so we let the exceptions percolate up the
# call stack.
warnings.warn(u"DateTimeField received a naive datetime (%s)"
u" while time zone support is active."
u" Converting from default time zone to UTC." % value,
RuntimeWarning)
default_timezone = timezone.get_default_timezone()
value = timezone.make_aware(value, default_timezone)
return value
value = smart_str(value)
try:
parsed = parse_datetime(value)
if parsed is not None:
return parsed
except ValueError:
msg = self.error_messages['invalid_datetime'] % value
raise exceptions.ValidationError(msg)
try:
parsed = parse_date(value)
if parsed is not None:
return datetime.datetime(parsed.year, parsed.month, parsed.day)
except ValueError:
msg = self.error_messages['invalid_date'] % value
raise exceptions.ValidationError(msg)
msg = self.error_messages['invalid'] % value
raise exceptions.ValidationError(msg)
def get_prep_value(self, value):
if not backportTimeZone():
return super(DateTimeUtcField, self).get_prep_value(value)
value = self.to_python(value)
if value is not None and settings.USE_TZ and timezone.is_naive(value):
# For backwards compatibility, interpret naive datetimes in local
# time. This won't work during DST change, but we can't do much
# about it, so we let the exceptions percolate up the call stack.
warnings.warn(u"DateTimeField received a naive datetime (%s)"
u" while time zone support is active."
u" Converting from default time zone to UTC." % value,
RuntimeWarning)
default_timezone = timezone.get_default_timezone()
value = timezone.make_aware(value, default_timezone)
# And, after all that mimicking of the Django 1.4 logic, in the
# end we need to strip the tzinfo because the pre-1.4 ORM can't
# handle it.
value = timezone.make_naive(value, timezone.utc)
return value