get() 返回了多个产品——它返回了 2 个 Django Rest Framework

Question

DRF 返回这个：get() 返回了不止一个产品——它返回了 2 个！，当我试图通过 PK

从我的数据库中获取对象时

序列化器

class ProductSerializer(serializers.ModelSerializer):
    # cat_id = serializers.SlugRelatedField(slug_field='cat_id', read_only=True)

    class Meta:
        model = Product
        fields = ('name', 'description', 'cat_id', 'use', 'diametr', 'len', 'color', 'photo')

观看次数

class CategoryProductView(APIView):
    def get(self, request, pk):
        product = Product.objects.get(cat_id=pk)
        serializer = ProductSerializer(product)
        return Response(serializer.data)

网址 path('api/categorylist/<int:pk>', CategoryProductView.as_view())

Answer 1

如果要序列化属于某个类别的某个主键的所有项目，您过滤并序列化 many=True 个项目，因此：

class CategoryProductView(APIView):
    
    def get(self, request, pk):
        products = Product.objects.<strong>filter(</strong>cat_id=pk<strong>)</strong>
        serializer = ProductSerializer(products<strong>, many=True</strong>)
        return Response(serializer.data)

get() 返回了多个产品——它返回了 2 个 Django Rest Framework

get() returned more than one Product -- it returned 2 Django Rest Framework

python

django

web