场景

需要将响应体按照格式规范返回给前端。

例如：

响应体中包含以下字段：

python">{"result": true,"data": {},"code": 200,"message": "ok","request_id": "20cadfe4-51cd-42f6-af81-016639232a66"
}

具体代码

工具类：

python">import loggingfrom rest_framework import status
from rest_framework.response import Responsefrom django_middleware_global_request import get_requestlogger = logging.getLogger("app")class ResponseMixin:def finalize_response(self, request, response, *args, **kwargs):"""异常处理函数，搭配custom_exception_handler进行处理:param request::param response::param args::param kwargs::return:"""global_request = get_request()current_reqeust_id = getattr(global_request, "current_request_id", None)if not getattr(request, "_wrapper_response", True):if isinstance(response, Response) and isinstance(response.data, dict):response.data["request_id"] = current_reqeust_idreturn super().finalize_response(request, response, *args, **kwargs)if isinstance(response, Response):if not response.exception:response.data = {"result": True,"data": response.data,"code": 200,"message": "ok","request_id": current_reqeust_id,}else:response.data = {"result": False,"data": response.data,"code": response.status_code,"message": str(response.data),"error": str(response.data),"request_id": current_reqeust_id,}response.status_code = status.HTTP_200_OKresponse.is_log_resp = Truereturn super().finalize_response(request, response, *args, **kwargs)

视图类中使用：

python">from common.drf.mixins import ResponseMixin
from rest_framework.viewsets import GenericViewSet, ModelViewSetclass TestViewSet(ResponseMixin,  # 继承工具类ModelViewSet):  # 必须继承viewset, GenericViewSet和ModelViewSet都可queryset = models.TestModel.objects.all()serializer_class = serializers.TestSerializer

注意：

视图类必须继承viewset，无论是GenericViewSet和ModelViewSet都可以