错误:使用mysite.urls中定义的URLconf，Django-3按以下顺序尝试了这些URL模式：，

Question

我正在做"Django 3 by example“中的教程"Blog”，我得到了错误。我哪里做错了？

错误:找不到页面(404)请求方法:获取请求URL：http://127.0.0.1:8000/blog/和位于/ TemplateDoesNotExist /的alsp博客。使用mysite.urls中定义的URLconf，Django按如下顺序尝试了这些URL模式: admin/当前的URL，blog/，与任何一个都不匹配。

BLOG

ADMIN

mysite/urls.py

from django.contrib import admin
from django.urls import path, include, re_path

urlpatterns = [
    path('admin/', admin.site.urls),
    path('blog/', include('blog.urls', namespace='blog')),
]

mysite/blog/views.py

from django.shortcuts import render, get_list_or_404
from .models import Post


# Create your views here.
def post_list(request):
    posts = Post.published.all()
    return render(request, 'blog/post/list.html', {'post': posts})


def post_detail(request, year, month, day, post):
    post = get_list_or_404(Post, slug=post, status='published', publish__year=year, publish__month=month,
                           publish__day=day)
    return render(request, 'blog/post/detail.html', {'post': post})

mysite/blog/admin.py

from django.contrib import admin
from .models import Post


# Register your models here.
@admin.register(Post)
class PostAdmin(admin.ModelAdmin):
    list_display = ('title', 'slug', 'author', 'publish', 'status')
    list_filter = ('status', 'created', 'publish', 'author')
    search_fields = ('title', 'body')
    prepopulated_fields = {'slug':('title',)}
    raw_id_fields = ('author',)
    date_hierarchy = 'publish'
    ordering = ('status', 'publish')

mysite/mysite/urls.py

from django.urls import path, include

from mysite.blog import admin
from . import views

app_name = 'blog'

urlpatterns = [
    # post views

    path('', views.post_list, name='post_list'),
    path('<int:year>/<int:month>/<int:day>/<slug:post>/',
         views.post_detail, name='post_detail'),
]

我的网站/博客/模型

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User
from django.urls import reverse


# Create your models here.

class PublishedManager(models.Manager):
    def get_queryset(self):
        return super().get_queryset().filter(status='published')


class Post(models.Model):
    STATUS_CHOICES = (
        ('draft', 'Draft'),
        ('published', 'Published'),
    )
    title = models.CharField(max_length=250)
    slug = models.SlugField(max_length=250, unique_for_date='publish')
    author = models.ForeignKey(User, on_delete=models.CASCADE,
                               related_name='blog_posts')
    body = models.TextField()
    publish = models.DateTimeField(default=timezone.now)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    status = models.CharField(max_length=10, choices=STATUS_CHOICES, default='draft')
    object = models.Manager()
    published = PublishedManager()

    def get_absolute_url(self):
        return reverse('blog:post_detail', args=[self.publish.year, self.publish.month, self.publish.day, self.slug])

    class Meta:
        ordering = ('-publish',)

    def __str__(self):
        return self.title

Answer 1

未找到模板的第一个错误是因为未在settings.py文件中指定其路径。

第二个原因是您没有在mysite/urls.py中指定/路径

如果你想要更多的解释，请随时询问。