def _translate(self, obj, skip_required=False):
"""
First checks if the obj is None or already a datetime object
Returns that if true. Otherwise assumes that it is a string
and attempts to parse it out using the formats in self.valid_formats
and the datetime.strptime method
Additionally it strips out any whitespace from the beginning and
end of the input before attempting to parse out a datetime string
:param unicode obj: The input that is being translated
:return: The parse datetime object
:rtype: datetime
"""
if isinstance(obj, datetime):
return obj
obj = obj.strip()
for date_format in self.valid_formats:
try:
return datetime.strptime(obj, date_format)
except ValueError:
continue
raise TranslationException(
self.error_message
or 'The object ({0}) could not be parsed as a datetime '
'string using the formats {1}'.format(obj, self.valid_formats))
def _translate(self, obj, skip_required=False):
try:
return list(obj)
except TypeError:
raise TranslationException(
self.error_message or '{0} requires an iterable. The object'
' {1} is not'.format(self.name, obj))
def _translate(self, obj, skip_required=False):
obj = translate_iterable_to_single(obj)
try:
return self.field_type(obj)
except ValueError:
msg = self.error_message or 'Not a valid integer type: {0}'.format(obj)
raise TranslationException(msg)
def _translate(self, obj, skip_required=False):
if not hasattr(obj, 'get'):
raise TranslationException(self.error_message or
'A dictionary field must have a get method '
'that allows for retrieving an item with a default. '
'For example a dictionary.')
return obj
def _translate(self, obj, skip_required=False):
# A none input should be handled by the validator
if obj is None:
return obj
obj = super(IntegerField, self)._translate(obj,
skip_required=skip_required)
try:
return int(obj)
except ValueError:
raise TranslationException(
self.error_message
or 'Not a valid integer type: {0}'.format(obj))
def _translate(self, obj, skip_required=False):
if obj is None: # let the validation handle it.
return obj
if not isinstance(obj, (
list,
set,
tuple,
)):
raise TranslationException(
self.error_message
or 'A list field must be an instance of a list, '
'tuple, or set')
return obj
def _translate(self, obj, skip_required=False):
# A none input should be handled by the validator
if obj is None:
return obj
obj = super(FloatField, self)._translate(obj,
skip_required=skip_required)
try:
return float(obj)
except (ValueError, TypeError):
raise TranslationException(
self.error_message
or 'obj is not castable to float: {0}'.format(obj))
def _translate(self, obj, skip_required=False):
obj = translate_iterable_to_single(obj)
if isinstance(obj, bool):
return obj
if isinstance(obj, six.string_types):
if obj.lower() == 'false':
return False
elif obj.lower() == 'true':
return True
msg = self.error_message or ('{0} is not a valid boolean.'
' Either "true" or "false" is '
'required (case insensitive)'.format(obj))
raise TranslationException(msg)
def _translate(self, obj, skip_required=False):
# A none input should be handled by the validator
obj = super(BooleanField, self)._translate(obj,
skip_required=skip_required)
if obj is None:
return obj
if isinstance(obj, bool):
return obj
if isinstance(obj, six.string_types):
if obj.lower() == 'false':
return False
elif obj.lower() == 'true':
return True
raise TranslationException(
self.error_message or '{0} is not a valid boolean. Either'
' "true" or "false" is required (case insensitive)'.format(obj))
