无法获得社交网络项目中帖子的详细信息视图 [英] Can't get the detail view of a post in a social network project

问题描述

我正在django中建立一个简单的社交网络。

I am building a simple social network in django.

在我的社交网站的家中，我列出了所有用户发布的所有帖子，作者和出版日期。发布日期有指向URL的链接，该URL应该返回用户发布的特定帖子的详细视图。

In the "home" of my social, I have the list of all posts published by all users, with author and publishing date. The publishing date have a link to a url that should return the detail view of a specific post published by a user.

但是，当我单击它时，它向我显示它的作者发布的所有帖子的列表（当我单击该帖子的作者链接时，也可以使用此列表。）

However, as I click on it, it shows me the list of all posts published by its author (this also works when I click on the author link of the post).

因此，两者

www.mysocial.com/posts/by/ciccio/7 /

www.mysocial.com/posts/by/ciccio/7/

和

www.mysocial.com/posts/by/ciccio /

www.mysocial.com/posts/by/ciccio/

带我到同一页，这是ciccio的帖子列表。

take me to the same page, that is ciccio's posts list.

我将显示urls.py，views.py和都包含在我的帖子应用中的models.py（myproject>帖子）

I am going to show urls.py, views.py and models.py that all are contained in my "posts" app (myproject > posts)

这是我的urls.py

Here is my urls.py

# shows all user posts
url(r'by/(?P<username>[-\w]+)', 
views.UserPosts.as_view(), 
name='for_user'),

# shows specific post
url(r'by/(?P<username>[-\w]+)/(?P<pk>\d+)/$', 
views.PostDetail.as_view(), 
name='single'),

我的views.py

my views.py

class PostList(SelectRelatedMixin, generic.ListView):
    model = Post
    select_related = ('user', 'group')

class UserPosts(generic.ListView):
    model = models.Post
    template_name = 'posts/user_post_list.html'

    def get_queryset(self):
        try:
            #prende i post fatti dal'username che è lo stesso di quello che è loggato per guardarli
            self.post_user = User.objects.prefetch_related('posts').get(username__iexact=self.kwargs.get('username'))

        except User.DoesNotExist:
            raise Http404

        else:
            return self.post_user.posts.all()

    def get_context_data(self,**kwargs):
        context = super().get_context_data(**kwargs)
        context['post_user'] = self.post_user
        return context

class PostDetail(SelectRelatedMixin, generic.DetailView):
    model = models.Post
    select_related = ('user', 'group') #group senza apostrofo?

    def get_queryset(self):
        queryset = super().get_queryset()
        return queryset.filter(
            user__username__iexact=self.kwargs.get('username'),
            # maybe smth is needed here?
            )

我的模型.py

User = get_user_model()


# Create your models here.

class Post(models.Model):
    user = models.ForeignKey(User, related_name="posts", on_delete=models.CASCADE)
    created_at = models.DateTimeField(auto_now=True)
    message = models.TextField()
    message_html = models.TextField(editable=False)


    group = models.ForeignKey(Group, related_name="posts", null=True, blank=True, on_delete=models.CASCADE)

    def __str__(self):
        return self.message

    def save(self, *args, **kwargs):
        self.message_html = m.html(self.message)
        # in questo modo quando si fa un markdon si mette un link nel loro post
        super().save(*args, **kwargs)

    def get_absolute_url(self):
        return reverse('posts:single', kwargs={'username':self.user, 'pk':self.pk})

    class Meta:
            ordering = ['-created_at']
            unique_together = ['user', 'message'] 

我的馅饼显示帖子作者和帖子发布日期的模板的e：

my piece of template showing author and publishing date of a post:

    <span class="username">
        <!--  mi porta a tutti i post fatti da quell'user -->
        <a href="{% url 'posts:for_user' username=post.user.username %}">@{{ post.user.username }}</a>
    </span>

    <a> – </a>

    <!-- il time tag posta il tempo -->
    <time class="time">
    <a href="{% url 'posts:single' username=post.user.username pk=post.pk %}">{{ post.created_at }}</a>

    </time>

模型 User是django的默认模型。User

The model "User" is django's default models.User

问题必须出在PostDetail视图中，因为我通过单击url验证了我的模板显示了正确的帖子pk（post.pk）

The problem must be in PostDetail view, since I verified that by clicking on the url, my template shows the post correct pk (post.pk)

也许视图中缺少过滤器？看到我的＃注释

Maybe a filter is missing in views? see my # comment

推荐答案

最后缺少一个 / $ 第一个网址：

A /$ was missing at the end of the first url:

url(r'by/(?P<username>[-\w]+)/$', 
    views.UserPosts.as_view(), 
    name='for_user'),

但是我仍然不能理解用于显示所有用户帖子的视图的URL如何影响仅显示特定帖子的URL的行为。

But I still can't understend how could the url used to display the view showing all users's posts influence the behaviour of the url that should show only a specific post.

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