How to Perform a Delete operation in Django rest Framework?

Question

Hello Iam new in Django rest framework,i want to create custom delete funtion to delete .I successfully created create and update as in my below code but i cant create delete function.But i searched lots of article about it but i havent found .Hopefully U will help me .

1. models.py

   class User(AbstractUser, BaseModel):


    full_name = models.CharField(max_length=64)

        addresss=models.CharField(max_length=40)

        phoneno=models.IntegerField(null=True, blank=True)

        email=models.EmailField()

        password=models.CharField(max_length=40)

        re_password=models.CharField(max_length=40)


        gender=models.IntegerField(choices=gender_choice,default='0')

    ##models for student register
    class Student(BaseModel):
        user = models.ForeignKey(User, on_delete=models.CASCADE)

        father_name=models.CharField(max_length=64)
        mother_name=models.CharField(max_length=60)
        date_of_birth=models.DateField(null=True)

        def __str__(self):
            return self.user.full_name

2. Serializer.py

    class StudentSerializer(serializers.HyperlinkedModelSerializer):
        user = UserSerializer()
        class Meta:
            model=Student
            fields=(
                'id',
                'father_name',
                'mother_name',
                'date_of_birth',
                'user',
                )

 3. serializer.for user

    class UserSerializer(serializers.HyperlinkedModelSerializer):
        class Meta:
            model = User
            fields=('full_name','id','addresss','phoneno','email','password','re_password','gender')

4. views.py

    class StudentViewset(viewsets.ModelViewSet):
        queryset = Student.objects.all()
        serializer_class = StudentSerializer

        http_methods = ['get', 'post','put',]


        def create(self, request):
            serializer = self.get_serializer(data=request.data)
            serializer.is_valid(raise_exception=True)

            row = serializer.data
            user = row['user']

            if user['password'] != user['re_password']:
                return Response({'message':'pw not matched'})

            email = username = row['user']['email']

            user, created = User.objects.get_or_create(email=email, 
                defaults={'full_name':row['user']['full_name'],'addresss':row['user']['addresss'],
                'phoneno':row['user']['phoneno'],'password':row['user']['password'] ,'re_password':row['user']['re_password'],
                'gender':row['user']['gender'] ,'username':username})

            if created == False:
                return Response({'message':'Sorry the student is already registered.'})

            student = Student.objects.create(user_id=user.id)

            return Response(row)

        def update(self,request,*args,**kwargs):
            instance=self.get_object()
            serializer=StudentUpdateSerializer(data=request.data)

            serializer.is_valid(raise_exception=True)

            data = serializer.data
            if data.get('father_name', False):
                instance.father_name = data.get('father_name')

            if data.get('mother_name', False):
                instance.mother_name = data.get('mother_name')

            instance.save()
            return Response(serializer.data)
Q.
def delete(..)#How to write this delete Function???

Answer 1

ModelViewSet has a function which is called when you do DELETE request and it is called destroy

This is how it looks like:

    def destroy(self, request, *args, **kwargs):
        instance = self.get_object()
        self.perform_destroy(instance)
        return Response(status=status.HTTP_204_NO_CONTENT)

So to delete the instance from your DB - you can do

instance.delete()

that's what actually perform_destroy does.

So you can take inspiration from this and implement your custom delete.

Answer 2

还有如通用删除类基于视图点击这里