class AddItemSchema(Schema):  # схема для создания товара
    title = fields.Str(validate=Length(1, 64), required=True)
    description = fields.Str(validate=Length(1, 1024), required=True)
    price = fields.Int(validate=Range(1, 1000000), required=True)


@method_decorator(csrf_exempt, name='dispatch')
class AddItemView(View):
    """View для создания товара."""

    def post(self, request):
        try:
            document = json.loads(request.body)
            schema = AddItemSchema(strict=True)
            data = schema.load(document)  # получаем словарь с данными
            new_item = Item.objects.create(**data.data)   # создаем объект в бд
            new_item.save()
            return JsonResponse({'id': new_item.id}, status=201)
        except json.JSONDecodeError:
            return JsonResponse({'errors': 'Invalid JSON'}, status=400)
        except MarshErr as exc:
            return JsonResponse({'errors': exc.messages}, status=400)