我正在尝试使用FieldMixin从这个答案 https://stackoverflow.com/a/47120048/96588在我的项目中,但我很难让它通过mypy
检查。当前代码:
class DynamicFieldsMixin(Serializer):
context: Dict[str, Any]
def get_field_names(
self, declared_fields: OrderedDict, info: FieldInfo
) -> Set[str]:
field_names: Set[str] = self.context.get(
"fields",
super().get_field_names(declared_fields, info)
)
return field_names
继承自rest_framework.serializers.Serializer
看起来很奇怪,我想知道是否有办法避免这种情况,因为它应该混合到实际中Serializer
类。仅删除超类会导致此错误:
错误:“get_field_names”在超类中未定义
mypy
配置:
[mypy]
check_untyped_defs = true
disallow_untyped_defs = true
ignore_missing_imports = true
no_implicit_optional = true
warn_redundant_casts = true
warn_return_any = true
warn_unused_ignores = true
您可以仅出于类型检查的目的引入基类:
import typing
from typing import Any, Dict, List, Mapping, TypeVar
from rest_framework.fields import Field
from rest_framework.serializers import ModelSerializer
from rest_framework.utils.model_meta import FieldInfo
if typing.TYPE_CHECKING:
_Base = ModelSerializer
else:
_Base = object
class DynamicFieldsMixin(_Base):
context: Dict[str, Any]
def get_field_names(self, declared_fields: Mapping[str, Field], info: FieldInfo) -> List[str]:
field_names = super().get_field_names(declared_fields, info)
# Revealed type is 'builtins.list[builtins.str]'
reveal_type(field_names)
return field_names
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系:hwhale#tublm.com(使用前将#替换为@)