Question

我按照Django by Example这本书写了一篇博客。

# blog/models.py
from django.contrib.auth.models import User
from django.db import models
from django.utils import timezone


# Create your models here.
class Post(models.Model):
    title = models.CharField(max_length=200)
    slug = models.SlugField(max_length=200, unique_for_date='publish')
    author = models.ForeignKey(
        User, related_name='blog_posts', on_delete=models.CASCADE)
    body = models.TextField()
    publish = models.DateTimeField(default=timezone.localtime)

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

    def __str__(self):
        return self.title

url config：

# blog/urls.py

from django.urls import path

from . import views

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

当我收到blog/views.py中的帖子时：

def post_detail(request, year, month, day, slug):
    post = get_object_or_404(
        Post,
        slug=slug,
        publish__year=year,
        publish__month=month,
        publish__day=day
        )
    return render(request, 'blog/post_detail.html', {'post': post})

它返回404.

Page not found (404)
Request Method: GET
Request URL:    http://localhost/blog/2017/12/9/its-code-now
Raised by:  blog.views.post_detail
No Post matches the given query.

如果我修改blog/views.py，只过滤年份，则返回正常：

def post_detail(request, year, month, day, slug):
        post = get_object_or_404(
            Post,
            slug=slug,
            publish__year=year,
            )
        return render(request, 'blog/post_detail.html', {'post': post})

问题似乎是publish__month。但是Django支持这种方法。我无法弄清楚如何解决它。

无法通过publish__month获取对象

0 个答案: