def validate(self, value):
if self.min_value is not None and value < self.min_value:
raise ValidationError(
f"Min-value constraint not satisfied: '{value}'")
if self.max_value is not None and value > self.max_value:
raise ValidationError(
f"Max-value constraint not satisfied: '{value}'")
return super().validate(value)
def validate(self, value):
result = urllib.parse.urlparse(value)
if not result.scheme:
raise ValidationError(f"no scheme provided for url: {value}")
if not result.path:
raise ValidationError(f"no path provided for url: {value}")
if not result.netloc:
raise ValidationError(f"no domain provided for url: {value}")
return True
def __set__(self, instance, value):
if self.validate(value):
instance._values[self] = value
else:
# Usually validate should have raised already.
# Let's do it again. Just in case...
raise ValidationError(
f"'{value}' is not a valid value for {self.__class__.__name__}")
def validate(self):
for fieldname in self.get_fieldnames():
field = self.get_field(fieldname)
value = self[fieldname]
if field.required and value is None:
raise ValidationError(f"Required field is empty: {fieldname}")
return True
def __setattr__(self, fieldname, value):
if fieldname not in ("_values", ):
fieldnames = self.get_fieldnames()
if fieldname not in fieldnames:
raise ConfigurationError(
f"'{fieldname}' can not be set for configuration {self}")
try:
super().__setattr__(fieldname, value)
except ValidationError as exception:
raise ValidationError(
f"Validation failed for '{fieldname}'") from exception
def validate(self, value):
if value not in self.choices:
raise ValidationError(f"{value} is not a valid choice for field {self}")
return super().validate(value)
def _raise_validation(self, value):
raise ValidationError(
f"{value} is not valid for {self.__class__.__name__}")
def validate(self, value):
if self.required and value is None:
raise ValidationError("Cannot set required field to None")
return True
def validate(self, value):
if not os.path.isdir(value):
raise ValidationError(f"Not a directory: '{value}'")
return True
def validate(self, value):
if not os.path.isfile(value):
raise ValidationError(f"Not a file: '{value}'")
return True
def validate(self, value):
_name, addr = parseaddr(value)
if self.rex.match(addr.upper()):
return True
raise ValidationError(f"Not a valid email address: '{addr}'")