python django 中没有显示点赞数......我不知道为什么......有人可以帮助我
count of likes is not showing in python django .... I don't know why .. Can someone help me
注册和登录页面工作正常但我的点赞数没有显示在 django 中...我不知道为什么...有人可以帮我找到这个错误...这将是伟大的求助...谢谢！！
1.Views.py
from django.shortcuts import render, get_object_or_404, redirect
from datasecurity.models import Post
from django.urls import reverse
from django.http import HttpResponseRedirect
from django.contrib.auth.decorators import login_required
# Create your views here.
@login_required
def likes(request, pk):
post=get_object_or_404(Post, pk=pk)
post.likes.add(request.user)
return HttpResponseRedirect(reverse('datasecurity:datasecurity'))
def datasecurity(request):
allPosts= Post.objects.all()
context={'allPosts': allPosts}
def __init__(self, *args, **kwargs):
stuff = get_object_or_404(Post, id = self.kwargs['pk'])
total_likes = stuff.total_likes()
context['total_likes'] = total_likes
return render(request, 'datasecurity/data.html',context=context)
def blogHome(request, slug):
post=Post.objects.filter(slug=slug).first()
context={"post":post}
return render(request, "datasecurity/blogHome.html", context)
2.Urls.py
from django.conf.urls import url
from . import views
app_name = 'datasecurity'
urlpatterns = [
url(r'^$', views.datasecurity, name="datasecurity"),
url(r'^datasecurity/(?P<slug>[^/]+)', views.blogHome, name='blogHome'),
url(r'^likes/(?P<pk>\d+)/', views.likes, name = "likes"),
]
3.models.py
from django.db import models
from ckeditor.fields import RichTextField
from django.contrib.auth.models import User
# Create your models here.
class Post(models.Model):
sno=models.AutoField(primary_key=True)
title=models.CharField(max_length=255)
author=models.CharField(max_length=14)
slug=models.CharField(max_length=130)
timeStamp=models.DateTimeField(blank=True)
content=RichTextField(blank=True, null=True)
img = models.ImageField(blank=True, null=True, upload_to="dataimage/")
likes = models.ManyToManyField(User)
@property
def total_likes(self):
return self.likes.count()
def __str__(self):
return self.title + " by " + self.author
4.data.html
<!DOCTYPE html>
{% load static %}
<html lang="en" dir="ltr">
<head>
<meta
name="viewport"
content="width=device-width, initial-scale=1, shrink-to-fit=no"
/>
<link
href="https://fonts.googleapis.com/css?family=Lato:100,300,400,700,900"
rel="stylesheet"
/>
<meta charset="utf-8">
<title></title>
<!-- Bootstrap core CSS -->
<link href="{% static 'css/bootstrap.min.css' %}" rel="stylesheet">
<link rel="stylesheet" href="{% static 'css/datasecurity.css' %}">
<link rel="preconnect" href="https://fonts.gstatic.com">
<link href="https://fonts.googleapis.com/css2?family=PT+Sans&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Bebas+Neue&family=PT+Sans&display=swap" rel="stylesheet">
<link rel="canonical" href="https://getbootstrap.com/docs/5.0/examples/cover/">
<script async defer crossorigin="anonymous" src="https://connect.facebook.net/en_GB/sdk.js#xfbml=1&version=v9.0" nonce="noEcH88O"></script>
<script async defer crossorigin="anonymous" src="https://connect.facebook.net/en_GB/sdk.js#xfbml=1&version=v3.2"></script>
</head>
<body>
<!-- End header -->
<div id="page-wraper">
<!-- Sidebar Menu -->
<div class="responsive-nav">
<div class="top-navbar">
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container">
<marquee><ul class="navbar-nav ml-auto">
<li class="nav-item"><a class="nav-link" href="{% url 'careforallapp:base' %}">Home</a></li>
</ul></marquee>
</div>
</div>
</nav>
</div>
<section class="section about-me" data-section="section1">
<div class="container">
<div class="section-heading">
<h2>Welcome to Data Security</h2>
{% for post in allPosts %}
<div class="line-dec"></div>
<span
>This is a Bootstrap v4.2.1 CSS Template for you. Edit and use
this layout for your site. Updated on 21 May 2019 for repeated main menu HTML code.</span
>
</div>
<div class="left-image-post">
<div class="row">
<div class="col-md-6">
<div class="left-image">
{% if post.img %}
<img src="{{ post.img.url }}" alt="" />
{% endif %}
</div>
</div>
<div class="col-md-6">
<div class="right-text">
<h4>{{post.title}}</h4>
<h6>Article by {{post.author}}</h6>
<h2>{{post.datetime}}</h2>
<p>
{{post.content|safe | truncatechars:280}}
</p>
<form action = "{% url 'datasecurity:likes' pk=post.pk %}" method = "POST">
{% csrf_token %}
<button type="submit" name="post_id" value = "post_id" class="btn"> Like </button> - {{ total_likes }} likes
</form><br><br>
<div class="white-button">
<a href="{% url 'datasecurity:blogHome' slug=post.slug %}">Read More</a>
</div><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</section>
</div>
{% endfor %}
</div>
<div>
</section>
</div>
我调试代码时没有错误..可能是逻辑错误..我真的不知道..谁能帮我找出错误谢谢
您似乎想在 datasecurity 视图中显示所有帖子。您出于某种原因在其中声明了一个函数 __init__（甚至没有使用它，它甚至不在 class 中，因为 __init__ 可能暗示）。像这样更改视图：
def datasecurity(request):
allPosts= Post.objects.all()
context={'allPosts': allPosts}
return render(request, 'datasecurity/data.html',context=context)
现在在您的模板中您正在使用 {{ total_likes }} 但您没有在上下文中传递任何此类变量。但是我注意到你已经在你的模型上声明了一个方法，所以将它更改为 {{ post.total_likes }}.
注册和登录页面工作正常但我的点赞数没有显示在 django 中...我不知道为什么...有人可以帮我找到这个错误...这将是伟大的求助...谢谢！！
1.Views.py
from django.shortcuts import render, get_object_or_404, redirect
from datasecurity.models import Post
from django.urls import reverse
from django.http import HttpResponseRedirect
from django.contrib.auth.decorators import login_required
# Create your views here.
@login_required
def likes(request, pk):
post=get_object_or_404(Post, pk=pk)
post.likes.add(request.user)
return HttpResponseRedirect(reverse('datasecurity:datasecurity'))
def datasecurity(request):
allPosts= Post.objects.all()
context={'allPosts': allPosts}
def __init__(self, *args, **kwargs):
stuff = get_object_or_404(Post, id = self.kwargs['pk'])
total_likes = stuff.total_likes()
context['total_likes'] = total_likes
return render(request, 'datasecurity/data.html',context=context)
def blogHome(request, slug):
post=Post.objects.filter(slug=slug).first()
context={"post":post}
return render(request, "datasecurity/blogHome.html", context)
2.Urls.py
from django.conf.urls import url
from . import views
app_name = 'datasecurity'
urlpatterns = [
url(r'^$', views.datasecurity, name="datasecurity"),
url(r'^datasecurity/(?P<slug>[^/]+)', views.blogHome, name='blogHome'),
url(r'^likes/(?P<pk>\d+)/', views.likes, name = "likes"),
]
3.models.py
from django.db import models
from ckeditor.fields import RichTextField
from django.contrib.auth.models import User
# Create your models here.
class Post(models.Model):
sno=models.AutoField(primary_key=True)
title=models.CharField(max_length=255)
author=models.CharField(max_length=14)
slug=models.CharField(max_length=130)
timeStamp=models.DateTimeField(blank=True)
content=RichTextField(blank=True, null=True)
img = models.ImageField(blank=True, null=True, upload_to="dataimage/")
likes = models.ManyToManyField(User)
@property
def total_likes(self):
return self.likes.count()
def __str__(self):
return self.title + " by " + self.author
4.data.html
<!DOCTYPE html>
{% load static %}
<html lang="en" dir="ltr">
<head>
<meta
name="viewport"
content="width=device-width, initial-scale=1, shrink-to-fit=no"
/>
<link
href="https://fonts.googleapis.com/css?family=Lato:100,300,400,700,900"
rel="stylesheet"
/>
<meta charset="utf-8">
<title></title>
<!-- Bootstrap core CSS -->
<link href="{% static 'css/bootstrap.min.css' %}" rel="stylesheet">
<link rel="stylesheet" href="{% static 'css/datasecurity.css' %}">
<link rel="preconnect" href="https://fonts.gstatic.com">
<link href="https://fonts.googleapis.com/css2?family=PT+Sans&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Bebas+Neue&family=PT+Sans&display=swap" rel="stylesheet">
<link rel="canonical" href="https://getbootstrap.com/docs/5.0/examples/cover/">
<script async defer crossorigin="anonymous" src="https://connect.facebook.net/en_GB/sdk.js#xfbml=1&version=v9.0" nonce="noEcH88O"></script>
<script async defer crossorigin="anonymous" src="https://connect.facebook.net/en_GB/sdk.js#xfbml=1&version=v3.2"></script>
</head>
<body>
<!-- End header -->
<div id="page-wraper">
<!-- Sidebar Menu -->
<div class="responsive-nav">
<div class="top-navbar">
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container">
<marquee><ul class="navbar-nav ml-auto">
<li class="nav-item"><a class="nav-link" href="{% url 'careforallapp:base' %}">Home</a></li>
</ul></marquee>
</div>
</div>
</nav>
</div>
<section class="section about-me" data-section="section1">
<div class="container">
<div class="section-heading">
<h2>Welcome to Data Security</h2>
{% for post in allPosts %}
<div class="line-dec"></div>
<span
>This is a Bootstrap v4.2.1 CSS Template for you. Edit and use
this layout for your site. Updated on 21 May 2019 for repeated main menu HTML code.</span
>
</div>
<div class="left-image-post">
<div class="row">
<div class="col-md-6">
<div class="left-image">
{% if post.img %}
<img src="{{ post.img.url }}" alt="" />
{% endif %}
</div>
</div>
<div class="col-md-6">
<div class="right-text">
<h4>{{post.title}}</h4>
<h6>Article by {{post.author}}</h6>
<h2>{{post.datetime}}</h2>
<p>
{{post.content|safe | truncatechars:280}}
</p>
<form action = "{% url 'datasecurity:likes' pk=post.pk %}" method = "POST">
{% csrf_token %}
<button type="submit" name="post_id" value = "post_id" class="btn"> Like </button> - {{ total_likes }} likes
</form><br><br>
<div class="white-button">
<a href="{% url 'datasecurity:blogHome' slug=post.slug %}">Read More</a>
</div><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</section>
</div>
{% endfor %}
</div>
<div>
</section>
</div>
我调试代码时没有错误..可能是逻辑错误..我真的不知道..谁能帮我找出错误谢谢
您似乎想在 datasecurity 视图中显示所有帖子。您出于某种原因在其中声明了一个函数 __init__（甚至没有使用它，它甚至不在 class 中，因为 __init__ 可能暗示）。像这样更改视图：
def datasecurity(request):
allPosts= Post.objects.all()
context={'allPosts': allPosts}
return render(request, 'datasecurity/data.html',context=context)
现在在您的模板中您正在使用 {{ total_likes }} 但您没有在上下文中传递任何此类变量。但是我注意到你已经在你的模型上声明了一个方法，所以将它更改为 {{ post.total_likes }}.