Multiple Update Tasks

[Trippy Samurai]

I have my Django website where i can have tasks created and subtasks under tasks i have mark complete option which is working fine i need them to be completed in batch like selecting multiple tasks at once and complete them.

**serializers.py**:

    class TaskCompleteSerializer(serializers.ModelSerializer):
         class Meta:
        model = Task
        fields = (
            'is_done',
        )

         def update(self, instance, validated_data):
             person = self.context['request'].user.person

             task_is_done = validated_data.get('is_done', False)

             if task_is_done:
                instance.subtasks.update(is_done=True)

             instance.is_done = task_is_done
             instance.done_by.set([person])
             instance.save()

             return instance

**views.py**:

    class TaskUpdateAPIView(UpdateAPIView):
         permission_classes = " "
         serializer_class = TaskCompleteSerializer
         queryset = Task.objects.all()
         model = Task
         lookup_url_kwarg = 'task_id'

**urls.py**

    path('<int:task_id>/complete/',views.TaskUpdateAPIView.as_view(),
    name='task_update'),

**models.py**

    class Task(BaseModel):
        name = models.CharField(max_length=255)
        done_by = models.ManyToManyField(
        User,
        related_name='tasks_completed',
        blank=True,
        )
        is_done = models.BooleanField(default=False)