将商品添加到购物车

Question

无论何时尝试将商品添加到购物车，它都不会显示在购物车中。没有错误，模板也可以正常工作，但是此商品中的http://127.0.0.1:8000/admin/ecom/orderitem/没有显示。 我正试图从三天之内解决这个问题，但是它不起作用。

这是视图

from django.shortcuts import render, get_object_or_404, redirect
from .models import Item, Checkout, Order, Orderitem
from django.urls import reverse_lazy
from django.views.generic import DetailView, ListView
from django.views.generic.edit import CreateView
class  CheckoutEditView( CreateView ) :
    model = Checkout
    template_name = 'checkedit.html'
    fields = '__all__'
    success_url = reverse_lazy('blank')

def item_list(request):
    context = {
        'items':Item.objects.all()
    }
    return render(request,'item_list.html',context)


class CheckListView(ListView):
    model = Checkout
    template_name = 'blank.html'
def check2(request):
    return render(request,'ckeck2.html')

def front(request):
    return render(request,'front.html')

def blank(request):
    return render(request,'blank.html')

def product(request):
    return render(request,'product-page.html')
def checkout(request):
    return render(request,'checkout-page.html')

def home(request):
    return render(request,'home.html')

class ArticleDetailView(DetailView):
    model = Item
    template_name = 'home.html'
    context_object_name = 'batman'

def home_page(request):
    return render(request,'home-page.html')

def add_to_cart(request,slug):
    item = get_object_or_404(Item,slug=slug)
    order_item = Orderitem.objects.create(item=item)

    order_qs = Order.objects.filter(user=request.user,ordered = False)
    if order_qs.exists():
        order = order_qs[0]
        if order.items.filter(item__slug=item.slug).exists():
            order_item.quantity +=1
            order_item.save()

    else:
       order =  Order.objects.create(user=request.user)
       order.items.add(order_item)

    return redirect("core:article_page",slug=slug)

无论何时尝试将商品添加到购物车，它都不会显示在购物车中。没有错误，模板也可以正常工作，但是此商品中的http://127.0.0.1:8000/admin/ecom/orderitem/没有显示。 我正试图从三天之内解决这个问题，但是这很正常。

这是模型字段

from django.db import models
from django.conf import settings
from django.urls import reverse

class Item(models.Model):
    title = models.CharField(max_length=100)
    pic = models.ImageField(upload_to='hero_headshots/')
    discription = models.TextField()

    price = models.IntegerField()
    slug = models.SlugField()

    discount = models.FloatField(blank=True,null=True)
    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse("core:article_page",kwargs={
            'slug': self.slug})

    def get_add_to_cart_url(self):
        return reverse("core:add-to-cart", kwargs={
            'slug': self.slug
        })


class Orderitem(models.Model):

    item = models.ForeignKey(Item, on_delete=models.CASCADE)

    quantity = models.IntegerField(default=1)

    def __str__(self):
        return f"{self.quantity} of {self.item.title}"


class Order(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL,on_delete=models.CASCADE)
    items = models.ManyToManyField(Orderitem)
    start_date = models.DateTimeField(auto_now_add=True)

    ordered = models.BooleanField(default=False)

    def __str__(self):
        return self.user.username

class Checkout(models.Model):
    Full_Name = models.CharField(max_length=15)
    Email = models.EmailField()
    Address = models.TextField()
    phone = models.CharField(max_length=13)

    def __str__(self):
        return self.Email