Bulk Update data in Django Rest Framework

Question

I am creating a Notification apps by Django Rest Framework which users can MARK AS READ ALL notification by using PATCH API in frontend. How can I Bulk Update data can do this task.

This serializer and viewset below just for PATCH only one notification object, but I want to do it all with Notifications which have field is_read = False

Edited with the right way

My Serializers:

class NotificationEditSerializer(ModelSerializer):
    class Meta:
        model = Notification
        fields = (
            'id',
            'is_read'
        )

My Viewset:

from rest_framework.response import Response
class NotificationListAPIView(ReadOnlyModelViewSet):
    queryset = Notification.objects.all()
    permission_classes = [AllowAny]
    serializer_class = NotificationEditSerializer
    lookup_field = 'id'

    @list_route(methods=['PATCH'])
    def read_all(self, request):
        qs = Notification.objects.filter(is_read=False)
        qs.update(is_read=True)
        serializer = self.get_serializer(qs, many=True)
        return Response(serializer.data)

My URL:

from rest_framework import routers
router.register(r'notifications/read_all', NotificationListAPIView)

score 5 · Accepted Answer · 2022-11-16 18:36:27Z

5

You can try to use list_route for example:

from rest_framework.response import Response
from rest_framework.decorators import list_route

class NotificationListAPIView(ReadOnlyModelViewSet):
    #YOUR PARAMS HERE

    @list_route()
    def read_all(self, request):
        qs = Notification.objects.filter(is_read=False)
        qs.update(is_read=True)
        serializer = self.get_serializer(qs, many=True)
        return Response(serializer.data)

the api is available by ^YOUCURRENTURL/read_all/$ more details marking-extra-actions-for-routing

NOTE! since DRF 3.10 @list_route() decorator was removed, you should use @action(detail=False) instead, I used @action(detail=False, methods=['PATCH']) to bulk patch, for example Thank you @PolYarBear

edited Nov 16, 2022 at 18:36

answered Dec 20, 2017 at 10:30

user8060120

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18 Comments

KitKit Over a year ago

It got this error: Expected view NotificationEditAPIView to be called with a URL keyword argument named "id". Fix your URL conf, or set the .lookup_field attribute on the view correctly.

KitKit Over a year ago

This is my new URL conf: url(r'^read_all/$', NotificationEditAPIView.as_view(), name='list'),

user8060120 Over a year ago

you don't need to change url config, just go by old way to list with prefix

KitKit Over a year ago

url(r'^(?P<id>[0-9]+)/mark_as_read/$', NotificationEditAPIView.as_view(), name='list') just for one object but I want to update all objects, Brown.

user8060120 Over a year ago

why you use for list RetrieveUpdateAPIView why (for example) not ReadOnlyModelViewSet

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