How to add to cart drf - django

Question

I have already asked this question but I got no response can you please elaborate how should I proceed. I am trying to create the order but i stuck at logic.
models.py:
class OrderItem(models.Model):
image_number = models.CharField(max_length=20)
title = models.CharField(max_length=20)
image_size = models.CharField(max_length=50)
file_type = models.CharField(max_length=20)
price = models.CharField(max_length=50)
def __str__(self):
return self.title
class Order(models.Model):
user = models.ForeignKey(CustomUser, on_delete=models.CASCADE)
items = models.ManyToManyField(OrderItem)
start_date = models.DateTimeField(auto_now_add=True)
ordered_date = models.DateTimeField()
ordered = models.BooleanField(default=False)
def __str__(self):
return str(self.user)
serializers.py:
class AddtocartSerializers(serializers.ModelSerializer):
class Meta:
model = OrderItem
fields = ['image_number','title','image_size','file_type','price']
class CartSerializers(serializers.ModelSerializer):
class Meta:
model = Order
fields = ['item',
'start_date',
'ordered_date'
]
views.py:
class AddtocartView(generics.CreateAPIView):
authentication_classes = []
permission_classes = []
pagination_class = None
queryset=OrderItem.objects.all()
serializer_class = AddtocartSerializers
class CartView(generics.ListCreateAPIView):
authentication_classes = []
permission_classes = []
pagination_class = None
queryset=Order.objects.all()
serializer_class = CartSerializers
def create(self, request):
return super(AddtocartView, self).create(request, *args, **kwargs)
urls.py:
path('addtocart/',views.AddtocartView.as_view(),name='addtocart'),
path('cart/',views.CartView.as_view(),name='cart'),
how can i create order after addtocart?

Answer 1

Yes you can do a post request to addtocart endpoint. But there must be logic written in addtocart endpoint to create an order and add OrderItem to the order. Then the order number must be returned to browser so that user can resume shopping / checkout the order.
After receiving the order number you can do some javascript stuff to show user his order details.

Answer 2

First of my suggestion for you don't to use ModelViewSet, because all you need is create and update for you view, for create use CreateAPIView, for update RetrieveAPIView.
you code will be like below:
class OrderItemSerializer(serializers.ModelSerializer)
class Meta:
model = OrderItem
fields = ['id', 'image_number', 'image_size', 'file_type', 'price']
class OrderCreateSerializer(serializers.ModelSerializer)
user = serializers.PrimaryKeyRelatedField(queryset=User.objects.all())
items = serializers.ListField(child=serializers.PrimaryKeyRelatedField(queryset=OrderItem.objects.all(), required=True), required=True)
ordered_date = serializers.DateField()
class Meta:
model = Order
fields = ['user', 'items', 'ordered_date']
def create(self, validated_data):
validated_data['user'] = self.context['request'].user
instance = Order.objects.create(**validated_data)
instance.save()
return instance
class CartView(CreateAPIView):
authentication_classes = []
queryset=Order.objects.all()
serializer_class = OrderCreateSerializer
def create(self, request):
return super(AddtocartView, self).create(request, *args, **kwargs)
ModelViewSet include more code which you don't use in you case. And also you can get user from request, and you can just add
validated_data['user'] = self.context['request'].user