Question

我正在开发一个Django博客，并为详细信息页面实现了slug。我偶然发现了一个问题。

找不到页面（404）请求方法：GET请求

网址：http://127.0.0.1:8000/susu/已提升

by：myshop.views.product_detail

没有产品与给定的查询匹配。

这是我的 myshop / urls.py 文件

from django.conf.urls import url
from . import views

app_name = 'myshop'
urlpatterns = [
    url(r'^$', views.product_list, name='product_list'),
    url(r'^(?P<product_slug>[-\w]+)/$', views.product_detail, name='product_detail'),
    url(r'^(?P<category_slug>[-\w]+)/$', views.product_list, name='product_list_by_category'),
]

这是我的 urls.py 文件

from django.contrib import admin
from django.conf.urls import url, include
from myshop import views as mv
from django.conf import settings
from django.conf.urls.static import static

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^', include('myshop.urls', namespace='myshop')),
]

if settings.DEBUG:
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

这是我的 views.py 文件

from django.shortcuts import render, get_object_or_404
from .models import Category, Product

# Create your views here.

def product_list(request, category_slug=None):
    category = None
    categories = Category.objects.all()
    products = Product.objects.filter(available=True)
    if category_slug:
        category = get_object_or_404(Category, slug=category_slug)
        products = products.filter(category=category)
    return render(request, 'shop/product/list.html', {'category': category, 'categories': categories, 'products': products})

def product_detail(request, product_slug):
    product = get_object_or_404(Product, slug=product_slug, available=True)
    return render(request, 'shop/product/detail.html', {'product': product})

这是我的 models.py 文件

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

# Create your models here.

class Category(models.Model):
    name = models.CharField(max_length=200)
    slug = models.SlugField(max_length=200, unique=True)

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse('myshop:product_list_by_category', args=[self.slug])

class Product(models.Model):
    category = models.ForeignKey(Category, related_name='products', on_delete=None)
    name = models.CharField(max_length=200)
    slug = models.SlugField(max_length=200)
    image = models.ImageField(upload_to='products/%Y/%m/%d', blank=True)
    description = models.TextField(blank=True)
    price = models.DecimalField(max_digits=10, decimal_places=2)
    stock = models.PositiveIntegerField()
    available = models.BooleanField(default=True)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)

    def __str__(self):
        return self.name

    def get_absolute_url(self):
        return reverse('myshop:product_detail', args=[self.slug])

我尝试在网址格式中重新排序网址条目从

urlpatterns = [
    url(r'^$', views.product_list, name='product_list'),
    url(r'^(?P<product_slug>[-\w]+)/$', views.product_detail, name='product_detail'),
    url(r'^(?P<category_slug>[-\w]+)/$', views.product_list, name='product_list_by_category'),
]

到

urlpatterns = [
    url(r'^$', views.product_list, name='product_list'),
    url(r'^(?P<category_slug>[-\w]+)/$', views.product_list, name='product_list_by_category'),
    url(r'^(?P<product_slug>[-\w]+)/$', views.product_detail, name='product_detail'),
]

，结果是我可以加载http://127.0.0.1:8000/susu/页面，（susu是类别）但我无法加载http://127.0.0.1:8000/susu-vanilla/页面，（susu-vanilla 产品）这是错误

找不到页面（404）请求方法：GET请求

网址：http://127.0.0.1:8000/susu-vanilla/已提升

by：myshop.views.product_list

没有类别与给定的查询匹配。

有人能帮助我吗？抱歉我的英文不好，谢谢

Answer 1

您不能拥有这两种网址格式。 Django总是匹配顶级的。

url(r'^(?P<product_slug>[-\w]+)/$', views.product_detail, name='product_detail'),
url(r'^(?P<category_slug>[-\w]+)/$', views.product_list, name='product_list_by_category'),

典型的解决方案是为一个（或两个）正则表达式添加前缀，例如：

url(r'^(?P<product_slug>[-\w]+)/$', views.product_detail, name='product_detail'),
url(r'^categories/(?P<category_slug>[-\w]+)/$', views.product_list, name='product_list_by_category'),

找不到页面（404） - 没有产品符合给定的查询

1 个答案: