Question

当我按照Antonio Mele的 Django 2示例中的说明进行操作时，我是Django的新手。我遇到一个问题，我无法查找每个帖子的详细信息。

单击帖子标题以查看帖子的详细信息，我看到了

我徘徊在StackOverflow上寻找灵感，似乎每个人的问题都如此不同。相关文件列出如下 blog/views.py

    def post_detail(request, year, month, day, post):
        post = get_object_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})

class PostListView(ListView):
    queryset = Post.published.all()
    context_object_name = 'posts'
    paginate_by = 3
    template_name = 'blog/post/list.html'

blog/urls.py

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

blog/templates/blog/post/detail.html

{% extends "blog/base.html" %}

{% block title %}{{ post.title }}{% endblock %}

{% block content %}
  <h1>{{ post.title }}</h1>
  <p class="date">
    Published {{ post.publish }} by {{ post.author }}
  </p>
  {{ post.body|linebreaks }}
{% endblock %}

开发环境为：

Python 3.6.5 Django 2.1.2 感谢Daniel Roseman

blog/templates/blog/post/list.html

{% extends "blog/base.html" %}

{% block title %}My Blog{% endblock %}

{% block content %}
  <h1>My Blog</h1>
  {% for post in posts %}
    <h2>
      <a href="{{ post.get_absolute_url }}">
        {{ post.title }}
      </a>
    </h2>
    <p class="date">
      Published {{ post.publish }} by {{ post.author }}
    </p>
    {{ post.body|truncatewords:30|linebreaks }}
  {% endfor %}
  {% include "pagination.html" with page=page_obj %}
{% endblock %}

models.py

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')

    objects = models.Manager() # The default manager.
    published = PublishedManager() # Our custom manager.

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

    def __str__(self):
        return self.title

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

如果可能的话，请尽可能多地用通俗易懂的方式说出它的工作方式，因为我仍然对Django背后的机制感到困惑。

令人困惑，我将数据库服务器改回sqlite3，问题消失了。

帖子详细信息丢失

0 个答案: