Django 博客如何在使用分页器时显示每个页面的最新帖子

Question

我在django博客中显示最新帖子时遇到问题。我使用了分页器，但现在我无法在每页都引出最新的帖子。

views.py

def post_list(request):
post_list = Post.objects.all()
page = request.GET.get('page')
paginator = Paginator(post_list, per_page=3)
try:
posts = paginator.page(page)
except PageNotAnInteger:
posts = paginator.page(1)
except EmptyPage:
posts = paginator(paginator.num_pages)
return render(request, 'blog/post_list.html', {'posts': posts,'page': page})

def post_detail(request, pk):
post = get_object_or_404(Post, pk=pk)
return render(request, 'blog/post_detail.html', {'post': post})

models.py

class Post(models.Model):
author = models.ForeignKey('auth.User')
title = models.CharField(max_length=200)
text = models.TextField()
image = models.FileField(upload_to='images/')
created_date = models.DateTimeField(
default=timezone.now)
published_date = models.DateTimeField(
blank=True, null=True)
def publish(self):
self.published_date = timezone.now()
self.save()
def __str__(self):
return self.title
class Meta:
ordering = ('-published_date',)

forms.py

from django import forms
from .models import Post
class PostForm(forms.ModelForm):
class Meta:
model = Post
fields = (
'title', 
'text', 
'image',
)

urls.py

urlpatterns = [
url(r'^$', views.post_list, name='post_list'),
url(r'^post/(?P<pk>[0-9]+)/$', views.post_detail, name='post_detail'),
url(r'^post/new/$', views.post_new, name='post_new'),
url(r'^post/(?P<pk>[0-9]+)/edit/$', views.post_edit, name='post_edit'),
url(r'^about$', views.about, name='about'),
url(r'^projects$', views.projects, name='projects'),
]

post_list.html

<div class="widget">
<h3>
Latest Posts
</h3>
<ul class="list-group">
{% for post in posts %}
<li class="list-group-item"><a href="{% url 'post_detail' pk=post.pk %}">{{ post.title|truncatewords:5 }}</a></li>
{% endfor %}
</ul>
</div>
<div class="widget">

现在/？page=1 显示 3 个最新帖子，/？page=2 只显示一个最新帖子(从 4 个可用( 我想每页显示 3 个最新帖子

Answer 1

我还是做了，它有效

views.py

def post_list(request):
post_list = Post.objects.all()
page = request.GET.get('page')
forms = Post.objects.filter(published_date__lte=timezone.now()).order_by('-published_date')[0:3]
paginator = Paginator(post_list, per_page=3)
try:
posts = paginator.page(page)
except PageNotAnInteger:
posts = paginator.page(1)
except EmptyPage:
posts = paginator(paginator.num_pages)
return render(request, 'blog/post_list.html', {'posts': posts,'page': page, 'forms': forms,})

def post_detail(request, pk):
post = get_object_or_404(Post, pk=pk)
form = post
return render(request, 'blog/post_detail.html', {'post': post, 'form' : form})

post_list.html

<div class="widget">
<h3>
Latest Posts
</h3>
<ul class="list-group">
{% for form in forms %}
<li class="list-group-item"><a href="{% url 'post_detail' pk=form.pk %}">{{ form.title|truncatewords:5 }}</a></li>
{% endfor %}
</ul>
</div>

Answer 2

这不是您要查找的内容，但您可以打开孤儿。 这将通过将项目发送到隐私页面来防止任何页面具有少量项目。

https://docs.djangoproject.com/en/1.11/topics/pagination/#optional-arguments