Source code for concrete_settings.validators.required_validator

from concrete_settings.exceptions import ValidationError
from concrete_settings.types import Undefined
from .validator import Validator


[docs]class RequiredValidator(Validator): def __init__(self, message: str = None): if message is None: message = ( 'Setting `{name}` is required to have a value. ' 'Current value is `Undefined`' ) self.message = message def __call__(self, value, *, name, owner, **ignore): if value == Undefined: msg = self.message.format(name=name) raise ValidationError(msg)