response returning null for no reason rest framework-CodePudding

I getting null in return when in fact i have data in the database, I don't where the problem lies, pretty frustrated by this, if I am not calling is_valid then it throws an assertion error but anyways data is still empty

class ProductSerializer(serializers.ModelSerializer):
    class Meta:
        model = Product
        fields = '__all__'

View

@api_view(['GET'])
def get_data(request):  
    product_data = Product.objects.all()
    print(product_data)
    serialized_data = ProductSerializer(data = product_data, many =True)
    data = {}
    if serialized_data.is_valid():
        data['status']='valid'
    else:
        data['status']='not valid'
        
    return Response(data)

CodePudding user response：

You were using the DRF serializer in the wrong way, try to use the instance argument, instead of data while serializing the data.

@api_view(['GET'])
def get_data(request):
    product_qs = Product.objects.all()
    serializer = ProductSerializer(instance=product_qs, many=True)
    return Response(serializer.data)