小编Yue*_*Hui的帖子

我正在尝试使用 django Rest 框架编写用于将产品添加到购物车的 API。我写了一个简单的serializer.py 和view.py。

模型.py：

class Product(models.Model):
    title = models.CharField(max_length=100,unique=True)
    description = models.TextField()
    image_url = models.URLField(max_length=200)
    price = models.DecimalField(max_digits=8,decimal_places=2)
    date_available = models.DateField
class LineItem(models.Model):
    product = models.ForeignKey(Product)
    unit_price = models.DecimalField(max_digits=8,decimal_places=2)
    quantity = models.IntegerField()

序列化程序.py

class LineItemSerializer(serializers.ModelSerializer):
    class Meta:
        model = LineItem
        fields = ('product', 'unit_price', 'quantity')

    def product(self, instance):
        return instance.product.title

视图.py

class RESTforCart(APIView):
    def post(self, request, *args, **kwargs):
        #print request.POST['product']
        product = Product.objects.get(id=request.POST['product'])
        cart = request.session['cart']
        cart.add_product(product)
        request.session['cart'] = cart
        lists=request.session['cart'].items 
        serializer = LineItemSerializer(lists,many=True)
        if serializer.is_valid():
            serializer.save() …