我正在为我的帖子制作一个回答/评论系统。以下是models.py的外观：
from django.conf import settings
from django.core.urlresolvers import reverse
from django.db import models
from django.utils import timezone
import misaka
from groups.models import Group
from django.contrib.auth import get_user_model
User = get_user_model()
class Post(models.Model):
user = models.ForeignKey(User, related_name="posts")
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)
def __str__(self):
return self.message
def save(self, *args, **kwargs):
self.message_html = misaka.html(self.message)
super().save(*args, **kwargs)
def get_absolute_url(self):
return reverse(
"posts:single",
kwargs={
"username": self.user.username,
"pk": self.pk
}
)
class Meta:
ordering = ["-created_at"]
unique_together = ["user", "message"]
class Answer(models.Model):
post = models.ForeignKey('posts.Post', related_name='posts')
author = models.ForeignKey(User, related_name='answers')
answer = models.TextField()
create_date = models.DateTimeField(default=timezone.now)
published_date = models.DateTimeField(blank=True, null=True)
def __str__(self):
return self.answer
def get_absolute_url(self):
return reverse('post_detail', kwargs={
"username": self.user.username,
"pk": self.pk,
})
我一直有问题，基本上在帖子详细信息中显示答案/评论。这是我的帖子详细信息的外观：
<!DOCTYPE html>
{%load staticfiles%}
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="keywords" content="footer, address, phone, icons" />
<link href="https://fonts.googleapis.com/css?family=Abel|Raleway|Signika|Signika+Negative" rel="stylesheet">
<title>Ask Uptown</title>
<style media="screen">
.logo-text span{
color: #5383d3;
}
.backgr{
background-color: #7F7F7F;
height: 13vh;
width: 100%;
background-size: cover;
background-position: center;
}
header{
background: src(.backgr);
}
.no-ans{
position: relative;
top: 50px;
left: 50px;
font-size: 20px;
}
.add-comment{
position: relative;
text-decoration: none;
z-index: 99;
position: relative;
display: flex;
justify-content: center;
align-items: center;
width: 300px;
height: 40px;
background: linear-gradient(45deg, #B388EB, #8093F1);
border-radius: 20px;
color: #FFF;
font-size: 20px;
letter-spacing: 1px;
font-weight: 200;
left: 1100px;
text-decoration: none;
left: 800px;
top: 75px;
}
</style>
</head>
<body>
<header>
<div class="backgr">
<nav class="" role="navigation" id="navbar">
<div class="">
<div class="logo">
<a class="logo-text" href="{% url 'home' %}"><h3>Uptown<span>Ask</h3></span></a>
</div>
<ul class="main-nav">
{% if user.is_authenticated %}
<li class="active"><a href="{% url 'home' %}">Home</a></li>
<li><a href="{% url 'posts:create' %}">Stuck? Ask A question</a></li>
<li><a href="{% url 'groups:all' %}">Groups</a></li>
<li><a href="#">Contact</a></li>
<li><a href="{% url 'accounts:logout' %}">Log out</a></li>
{% else %}
<li class="active"><a href="{% url 'home' %}">Home</a></li>
<li><a href="{% url 'groups:all' %}">Groups</a></li>
<li><a href="{% url 'accounts:login' %}" >Log in</a></li>
<li><a href="{% url 'accounts:signup' %}" >Sign up</a></li>
<li><a href="#">Contact</a></li>
{% endif %}
</ul>
</header>
<section>
{% block post_content %}
<div class="col-md-8">
{% include "posts/_post.html" %}
</div>
{% endblock %}
<a class="add-comment" href="{% url 'posts:add_comment_to_post' pk=post.pk%}">Answer This Question</a>
{% for comment in post.comments.all %}
<br>
{% if user.is_authenticated %}
{{ comment.created_date }}
{% if not comment.approved_comment %}
<a class="btn btn-default" href="{% url 'comment_remove' pk=comment.pk %}"><span class="glyphicon glyphicon-remove"></span></a>
<a class="btn btn-default" href="{% url 'comment_approve' pk=comment.pk %}"><span class="glyphicon glyphicon-ok"></span></a>
{% endif %}
<p>{{ comment.text|safe|linebreaks }}</p>
<p>Posted by: <strong>{{ comment.author }}</strong></p>
{% endif %}
{% empty %}
<p class="no-ans">No Answer's posted.</p>
{% endfor %}
</div>
</section>
<footer class="footer-distributed">
<div class="footer-left">
<h3>Uptown<span>Ask</span></h3>
<p class="footer-links">
<a href="#">Home</a>
·
<a href="#">Blog</a>
·
<a href="#">About</a>
·
<a href="#">Contact</a>
</p>
<p class="footer-company-name">Ask Uptown © 2017</p>
</div>
<div class="footer-center">
<div class="adress-sec">
<p class="p-adress">Address: Tripoli Street, Algeria Road, Mirdif Area - Dubai, United Arab Emirtes</p>
</div>
<div class="phone-sec">
<p>Phone: 04 251 5001</p>
</div>
<div class="email-sec">
<p class="p-email"><a href="mailto:rayanza3eem1234@gmail.com">Email: Uptownschool@gmail.com</a></p>
</div>
</div>
<div class="footer-right">
<p class="footer-company-about">
<span>About the company</span>
Lorem ipsum dolor sit amet, consectateur adispicing elit. Fusce euismod convallis velit, eu auctor lacus vehicula sit amet.
</p>
<div class="icons">
<a href="https://www.twitter.com" target="_blank"><img src="images/twitter.png" alt="Twitter" class="twitter" ></a>
<a href="https://www.facebook.com" target="_blank"><img src="facebook.png" alt="Facebook" class="facebook" ></a>
<a href="https://www.instagram.com" target="_blank"><img src="insta.png" alt="Instagram" class="instagram" ></a>
</div>
</div>
</footer>
</body>
</html>
这是一张在实际网站上看起来如何的图片。 PIcture of how the post detail looks on the actual site 但是我发布评论时已经有问题显示评论/答案了。如果我使用管理员发布它没有显示。如果我点击答案这个问题按钮就会给我这个错误：Picture for error
以下是我的观点和urls.py:
from django.contrib import messages
from django.contrib.auth.mixins import LoginRequiredMixin
from django.core.urlresolvers import reverse_lazy
from django.http import Http404
from django.views import generic
from braces.views import SelectRelatedMixin
from . import forms
from . import models
from django.contrib.auth import get_user_model
User = get_user_model()
class PostList(SelectRelatedMixin, generic.ListView):
model = models.Post
select_related = ("user", "group")
class UserPosts(generic.ListView):
model = models.Post
template_name = "posts/user_post_list.html"
def get_queryset(self):
try:
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")
def get_queryset(self):
queryset = super().get_queryset()
return queryset.filter(
user__username__iexact=self.kwargs.get("username")
)
class CreatePost(LoginRequiredMixin, SelectRelatedMixin, generic.CreateView):
# form_class = forms.PostForm
fields = ('message','group')
model = models.Post
# def get_form_kwargs(self):
# kwargs = super().get_form_kwargs()
# kwargs.update({"user": self.request.user})
# return kwargs
def form_valid(self, form):
self.object = form.save(commit=False)
self.object.user = self.request.user
self.object.save()
return super().form_valid(form)
class DeletePost(LoginRequiredMixin, SelectRelatedMixin, generic.DeleteView):
model = models.Post
select_related = ("user", "group")
success_url = reverse_lazy("posts:all")
def get_queryset(self):
queryset = super().get_queryset()
return queryset.filter(user_id=self.request.user.id)
def delete(self, *args, **kwargs):
messages.success(self.request, "Post Deleted")
return super().delete(*args, **kwargs)
def add_comment_to_post(request, pk):
post = get_object_or_404(Post, pk=pk)
if request.method == "POST":
form = CommentForm(request.POST)
if form.is_valid():
comment = form.save(commit=False)
comment.post = post
comment.save()
return redirect('post_detail', pk=post.pk)
else:
form = forms.CommentForm()
return render(request, 'posts/comment_form.html', {'form': form})
def comment_remove(request, pk):
comment = get_object_or_404(Comment, pk=pk)
post_pk = comment.post.pk
comment.delete()
return redirect('post_detail', pk=post_pk)
基于comment_remove功能的视图供用户删除他们的评论/答案。 add_comment_to_post是发布评论/答案的类。
from django.conf.urls import url
from . import views
app_name='posts'
urlpatterns = [
url(r"^$", views.PostList.as_view(), name="all"),
url(r"new/$", views.CreatePost.as_view(), name="create"),
url(r"by/(?P<username>[-\w]+)/$",views.UserPosts.as_view(),name="for_user"),
url(r"by/(?P<username>[-\w]+)/(?P<pk>\d+)/$",views.PostDetail.as_view(),name="single"),
url(r"delete/(?P<pk>\d+)/$",views.DeletePost.as_view(),name="delete"),
url(r'^post/(?P<pk>\d+)/comment/$', views.add_comment_to_post, name='add_comment_to_post'),
url(r'^comment/(?P<pk>\d+)/remove/$', views.comment_remove, name='comment_remove'),
]
我似乎无法找到一种方法来显示帖子详细信息下的评论，如果你的django天才就会有帮助。
答案 0 :(得分：0)
变化：
import bs4 as bs
import requests
source = requests.get("https://www.goodreads.com/quotes/tag/fear").text
soup = bs.BeautifulSoup(source, "lxml")
# Remove script tags.
[s.extract() for s in soup('script')]
divs = soup.findAll("div",{'class':'quoteText'})
for div in divs:
print (div.text.replace('\n', ' ').replace('\r', ''))
要
post = models.ForeignKey('posts.Post', related_name='posts')
这样你的模板'post.comments.all'就可以了