def localtime(value):
"""
Converts a datetime to local time in the active time zone.
This only makes sense within a {% localtime off %} block.
"""
return do_timezone(value, timezone.get_current_timezone())
def to_current_timezone(value):
"""
When time zone support is enabled, convert aware datetimes
to naive dateimes in the current time zone for display.
"""
if settings.USE_TZ and value is not None and timezone.is_aware(value):
current_timezone = timezone.get_current_timezone()
return timezone.make_naive(value, current_timezone)
return value
def _make_date_lookup_arg(self, value):
"""
Convert a date into a datetime when the date field is a DateTimeField.
When time zone support is enabled, `date` is assumed to be in the
current time zone, so that displayed items are consistent with the URL.
"""
if self.uses_datetime_field:
value = datetime.datetime.combine(value, datetime.time.min)
if settings.USE_TZ:
value = timezone.make_aware(value, timezone.get_current_timezone())
return value
def from_current_timezone(value):
"""
When time zone support is enabled, convert naive datetimes
entered in the current time zone to aware datetimes.
"""
if settings.USE_TZ and value is not None and timezone.is_naive(value):
current_timezone = timezone.get_current_timezone()
try:
return timezone.make_aware(value, current_timezone)
except Exception:
raise ValidationError(_('%(datetime)s couldn\'t be interpreted '
'in time zone %(current_timezone)s; it '
'may be ambiguous or it may not exist.')
% {'datetime': value,
'current_timezone': current_timezone})
return value
def render(self, context):
tzinfo = timezone.get_current_timezone() if settings.USE_TZ else None
return date(datetime.now(tz=tzinfo), self.format_string)
