|
def | __init__ (self, typing.Any constant, **kwargs) |
|
None | __init__ (self, *typing.Any default=missing_, typing.Any missing=missing_, typing.Optional[str] data_key=None, typing.Optional[str] attribute=None, typing.Optional[typing.Union[typing.Callable[[typing.Any], typing.Any], typing.Iterable[typing.Callable[[typing.Any], typing.Any]],]] validate=None, bool required=False, typing.Optional[bool] allow_none=None, bool load_only=False, bool dump_only=False, typing.Optional[typing.Dict[str, str]] error_messages=None, typing.Optional[typing.Mapping[str, typing.Any]] metadata=None, **additional_metadata) |
|
str | __repr__ (self) |
|
def | __deepcopy__ (self, memo) |
|
def | get_value (self, obj, attr, accessor=None, default=missing_) |
|
ValidationError | make_error (self, str key, **kwargs) |
|
def | fail (self, str key, **kwargs) |
|
def | serialize (self, str attr, typing.Any obj, typing.Optional[typing.Callable[[typing.Any, str, typing.Any], typing.Any]] accessor=None, **kwargs) |
|
def | deserialize (self, typing.Any value, typing.Optional[str] attr=None, typing.Optional[typing.Mapping[str, typing.Any]] data=None, **kwargs) |
|
def | context (self) |
|
def | serialize (self, attr, obj, accessor=None) |
|
def | deserialize (self, value) |
|
A field that (de)serializes to a preset constant. If you only want the
constant added for serialization or deserialization, you should use
``dump_only=True`` or ``load_only=True`` respectively.
:param constant: The constant to return for the field attribute.
.. versionadded:: 2.0.0