如何在Django Rest Framework的视图集中使用update方法并执行一些任务(如发送邮件)？

from rest_framework import viewsets
from rest_framework.decorators import action
from rest_framework.response import Response
from django.core.mail import send_mail

class MyViewSet(viewsets.ViewSet):
    queryset = YourModel.objects.all()

    @action(detail=True, methods=['put'])
    def update_and_send_email(self, request, pk=None):
        # 获取要更新的对象
        instance = self.get_object()
        
        # 执行一些任务，比如发送邮件
        send_mail(
            'Subject',
            'Message',
            'from@example.com',
            ['to@example.com'],
            fail_silently=False,
        )
        
        # 更新对象
        serializer = YourSerializer(instance, data=request.data)
        serializer.is_valid(raise_exception=True)
        serializer.save()
        
        return Response(serializer.data)

router = DefaultRouter()
router.register(r'models', MyViewSet, basename='models')
urlpatterns = router.urls