Python Django AttributeError:&x27;购物车&x27;对象没有属性';获取';
我在django项目中遇到以下错误:Python Django AttributeError:&x27;购物车&x27;对象没有属性';获取';,python,django,Python,Django,我在django项目中遇到以下错误: Request Method: GET Request URL: http://127.0.0.1:8000/cart/ Exception Type: AttributeError at /cart/ Exception Value: 'Cart' object has no attribute 'get' 下面是carts.views.py: from django.shortcuts import render, redire
Request Method: GET
Request URL: http://127.0.0.1:8000/cart/
Exception Type: AttributeError at /cart/
Exception Value: 'Cart' object has no attribute 'get'
下面是carts.views.py:
from django.shortcuts import render, redirect, get_object_or_404
from store.models import Product
from .models import Cart, CartItem
# Create your views here.
def _cart_id(request):
cart = request.session.session_key
if not cart:
cart = request.session.create()
return cart
def add_cart(request, product_id):
product = Product.objects.get(id=product_id)
try:
cart = Cart.objects.get(cart_id=_cart_id(request))
except Cart.DoesNotExist:
cart = Cart.objects.create(
cart_id = _cart_id(request)
)
cart.save()
try:
cart_item = CartItem.objects.get(product=product, cart=cart)
cart_item.quantity += 1
cart_item.save()
except CartItem.DoesNotExist:
cart_item = CartItem.objects.create(
product= product,
quantity= 1,
cart= cart,
)
cart_item.save()
return redirect('cart')
def cart(request):
return render(request, 'store/cart.html')
我试过:
from django.db import models
from store.models import Product
# Create your models here.
class Cart(models.Model):
cart_id = models.CharField(max_length=250, blank=True)
date_added = models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.cart_id
class CartItem(models.Model):
product = models.ForeignKey(Product, on_delete=models.CASCADE)
cart = models.ForeignKey(Cart, on_delete=models.CASCADE, related_name='cart')
quantity = models.IntegerField()
is_active = models.BooleanField(default=True)
def __str__(self):
return self.product
编辑:
完全回溯:
Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/cart/
Django Version: 3.2.3
Python Version: 3.9.1
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'category',
'accounts',
'store',
'carts']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback (most recent call last):
File "D:\greatkart\env\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
response = get_response(request)
File "D:\greatkart\env\lib\site-packages\django\utils\deprecation.py", line 119, in __call__
response = self.process_response(request, response)
File "D:\greatkart\env\lib\site-packages\django\middleware\clickjacking.py", line 26, in process_response
if response.get('X-Frame-Options') is not None:
Exception Type: AttributeError at /cart/
Exception Value: 'Cart' object has no attribute 'get'
编辑:
URL.py:
from django.urls import path
from . import views
urlpatterns = [
path('', views.Cart, name='cart'),
path('add_cart/<int:product_id>/', views.add_cart, name='add_cart'),
]
从django.url导入路径
从…起导入视图
URL模式=[
路径(“”,views.Cart,name='Cart'),
路径('add_cart/',views.add_cart,name='add_cart'),
]
我开始使用而不是“Model.objects.get()” 因为这些错误 你可以试试这个:
cart = Cart.objects.filter(cart_id=_cart_id(request).first()
if not cart:
new_cart = Cart(cart_id = _cart_id(request))
new_cart.save()
此方法为您提供具有正确“购物车id”的所有对象。
使用“.first()”可以将给定的查询集转换为一个对象(即使查询集中只有一个对象,也需要这样做)
而不是这个
try:
cart = Cart.objects.get(cart_id=_cart_id(request))
except Cart.DoesNotExist:
cart = Cart.objects.create(
cart_id = _cart_id(request)
)
cart.save()
感谢阿卜杜勒·阿齐兹·巴拉卡特:
@asdfasdf在
路径(“”,views.Cart,name='Cart')
中,您的意思是编写视图.Cart
而不是视图.Cart
?(注意大小写,Cart
是您的型号名称,Cart
是您视图的名称)——Abdul Aziz Barkat 6分钟前粘贴CART MODELAND请粘贴实际异常跟踪文件。您应该考虑使用<代码> GETIORORIGORION/COD>。这将使该视图的长度减少至少一半。此外,日志表明您正在发送GET请求,但我不确定是否理解,如果此视图首先要创建,请使用POST请求。请向我们显示完整的回溯错误。已添加models.py。