Re: Api

halo having 2 issues now

(1st) getting an integrity err

(2nd) i have a api code that return's count but still i'm not getting wat i expected

below is my codes and the err msg i'm getting

###APIView

class CartViewSet(viewsets.ModelViewSet):      serializer_class = CartDetailSerializer      queryset = CartList.objects.all()          #@detail_route(methods=['post', 'put'])      def add_item(request, self, pk=None):          cart = self.get_object()          try:              product = Product.objects.get(                  pk = request.data['product_id']              )              quantity = int(request.data['quantity'])          except Exception as e:              print (e)              return Response({'status': 'fail' })            if product.quantity < 0 or product.quantity - quantity < 0:              print('sorry check back leta')              return Response({'status': 'fail'})             existing_cart = CartList.objects.filter(product=product,                     cart=cart).first()          if existing_cart:              existing_cart.quantity +=quantity              existing_cart.save()          else:              new_cart = CartList(cart=cart, product=product,                           quantity=quantity)              new_cart.save()              product_list =                Product.Objects.filter(manufacturer=manufacturer).count()          serializer = CartSerializer(cart)          return Response(serializer.data)

Serializer

class CartDetailSerializer(serializers.ModelSerializer):      customer = UserSerializer(read_only =True)      items = serializers.StringRelatedField(many=True)        class Meta:          model = CartList          fields = ('id', 'customer', 'items', 'created', 'updated')      class CartListSerializer(serializers.ModelSerializer):      class Meta:          model = CartList          fields = ('product', 'quantity')

On Fri, Feb 28, 2020 at 1:28 PM Naveen Arora <naveenarorakrnl@gmail.com> wrote:

Create an API which returns count, then use javascript to update the front end part.

On Friday, 28 February 2020 12:50:39 UTC+5:30, Tosin Ayoola wrote:

Good morning guyz,  

I need help on this one,  it on writing api that will Shows the product count for each manufacturer as users add products real time. 

I have no idea how to solve this problem,  i will any suggestion 

Thanks 

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