Django 在/orders/[<;class';decimal.ConversionSyntax';>;]时的无效操作
我打算把交货成本加到项目的总价中,但它不起作用。这两个字段都是Django 在/orders/[<;class';decimal.ConversionSyntax';>;]时的无效操作,django,django-models,django-rest-framework,django-forms,django-views,Django,Django Models,Django Rest Framework,Django Forms,Django Views,我打算把交货成本加到项目的总价中,但它不起作用。这两个字段都是十进制,但它在/orders/[]处抛出此错误无效操作。这里是交货价格模型 回溯 File "/home//venv/lib/python3.7/site-packages/rest_framework/fields.py", line 1115, in to_representation value = decimal.Decimal(str(value).strip()) decimal.InvalidOperatio
十进制
,但它在/orders/[]处抛出此错误无效操作。这里是交货价格模型
回溯
File "/home//venv/lib/python3.7/site-packages/rest_framework/fields.py", line 1115, in to_representation
value = decimal.Decimal(str(value).strip())
decimal.InvalidOperation: [<class 'decimal.ConversionSyntax'>]
它是FK
到Order
模型
序列化程序.py
class DeliveryPrice(models.Model):
shipping_name = models.CharField(max_length=255, blank=True, null=True)
shipping_charge = models.DecimalField(max_digits=10, decimal_places=2, blank=True, null=True)
class OrderSerializer(serializers.ModelSerializer):
price_of_delivery = serializers.DecimalField(max_digits=10, decimal_places=2)
class Meta:
model = Order
fields = ['phone', 'address', 'price_of_delivery']
def create(self, validated_data):
price_of_delivery = validated_data.pop('price_of_delivery')
price_instance, created = DeliveryPrice.objects.get_or_create(shipping_charge=price_of_delivery)
order_instance = Order.objects.create(**validated_data, price_of_delivery=price_instance)
return order_instance
total_aggregated_dict = cart.aggregate(
total_price=Sum(F('quantity') * F('product__price'), output_field=DecimalField()))
print(total_aggregated_dict)
order_total = total_aggregated_dict['total_price']
delivery_price = self.request.data['price_of_delivery']
print(delivery_price)
final_total = Decimal(order_total) + Decimal(delivery_price)
print(final_total)
order = serializer.save(user=user, total_price=final_total)
视图.py
class DeliveryPrice(models.Model):
shipping_name = models.CharField(max_length=255, blank=True, null=True)
shipping_charge = models.DecimalField(max_digits=10, decimal_places=2, blank=True, null=True)
class OrderSerializer(serializers.ModelSerializer):
price_of_delivery = serializers.DecimalField(max_digits=10, decimal_places=2)
class Meta:
model = Order
fields = ['phone', 'address', 'price_of_delivery']
def create(self, validated_data):
price_of_delivery = validated_data.pop('price_of_delivery')
price_instance, created = DeliveryPrice.objects.get_or_create(shipping_charge=price_of_delivery)
order_instance = Order.objects.create(**validated_data, price_of_delivery=price_instance)
return order_instance
total_aggregated_dict = cart.aggregate(
total_price=Sum(F('quantity') * F('product__price'), output_field=DecimalField()))
print(total_aggregated_dict)
order_total = total_aggregated_dict['total_price']
delivery_price = self.request.data['price_of_delivery']
print(delivery_price)
final_total = Decimal(order_total) + Decimal(delivery_price)
print(final_total)
order = serializer.save(user=user, total_price=final_total)
这就是我迄今为止所做的一切。需要明确的是,首先,用户将产品添加到购物车中,然后他们可以在填写订单字段(地址、电话号码等)时进行订购。他们还可以选择运费,并且所选运费应添加到总价中。但在我的情况下,它不工作,我得到上面显示的错误。我如何处理这个问题?需要帮忙吗?提前谢谢 已解决
我的错误是使用序列化程序,因为我正在将交付的price\u设置为DecimalField
,并且在视图中我也转换为Decimal
。我刚刚将序列化程序。DecimalField
更改为序列化程序。CharField
一切正常。添加错误回溯您还可以添加订单
模型吗?当您使用“所有”
fields@NalinDobhal请喝一杯look@ArturSiepietowskiplaese看看我知道OP现在已经解决了这个问题,但是在mysql的位字段中存储一个布尔值会导致错误。当我返回值时,它将其视为十进制。