Method to_internal_value

rest_framework/fields.py:700–708

(self, data)

        return value

    def to_internal_value(self, data):
        with contextlib.suppress(TypeError):
            if self._lower_if_str(data) in self.TRUE_VALUES:
                return True
            elif self._lower_if_str(data) in self.FALSE_VALUES:
                return False
            elif self._lower_if_str(data) in self.NULL_VALUES and self.allow_null:
                return None
        self.fail("invalid", input=data)

    def to_representation(self, value):
        if self._lower_if_str(value) in self.TRUE_VALUES: