在views.py file ==> category_posts = post.object.filter(category = cat)返回一个空查询集。 POST'模型有类别的示例帖子
我正在Django创建一个博客应用程序,在那里我遇到了这个不寻常的问题。我无法过滤和显示博客文章类别。请在下面找到我的代码。提前致谢。我花了两天的时间试图解决这个问题,但仍然 什么都没有。
py
这是我为博客文章创建的模型。
class Post(models.Model):
title = models.CharField(max_length=255)
author = models.ForeignKey(User, on_delete=models.CASCADE)
body = models.TextField()
post_date = models.DateField(auto_now_add=True)
category = models.CharField(max_length=255, default="uncategorized")
def __str__(self):
return self.title + ' | ' + str(self.author)
def get_absolute_url(self):
#return reverse('article-detail', args=(str(self.id)))
return reverse('homepage')
views.py
这是我为明智的博客文章创建的观点。
def CategoryView(request,cat):
category_posts = Post.objects.filter(category=cat)
return render(request,'categories.html',{'category_posts':category_posts})
urls.py
urls.py文件。
path('category/< str:cat>/',categoryView,name ='category'),
categories.html
这将是最终显示页面,其中category_posts显示为一个空的querySet。 FO循环无法运行,因为category_posts是一个空的QuerySet。单个单词类别也为空(排除一个slugify问题)
{% extends 'base.html' %}
{% load static %}
{% block content %}
<ul>
{% for post in category_posts %}
<li>
<div class="category">
<a href="{% url 'category' post.category|slugify %}">{{ post.category }}</a>
</div>
<a href="{% url 'article-detail' post.pk %}">
<h3><b>{{ post.title }} </b></h3>
<p class=card-date>
<big>{{ post.author }}</big>
<small>-{{ post.post_date }}</small>
</p>
<p class="excerpt-text">{{ post.body | slice:"100" |safe}}</p>
<div class="article-thumbnail">
<img src="{% static "images/bg.png" %}" alt="article-thumbnail" >
</div>
<div class="overlay">
</a>
</li>
{% endfor %}
{% endblock %}
I am creating a blog application in django where i encountered this unusual issue. I am not being able to filter and display blog posts category wise. Please find my code below. Thanks in advance. I have spent two full days trying to figure this out and still
got nothing.
MODELS.py
This is the model which i have created for a blog post.
class Post(models.Model):
title = models.CharField(max_length=255)
author = models.ForeignKey(User, on_delete=models.CASCADE)
body = models.TextField()
post_date = models.DateField(auto_now_add=True)
category = models.CharField(max_length=255, default="uncategorized")
def __str__(self):
return self.title + ' | ' + str(self.author)
def get_absolute_url(self):
#return reverse('article-detail', args=(str(self.id)))
return reverse('homepage')
VIEWS.py
This is the view that i have created for a category wise blog posts.
def CategoryView(request,cat):
category_posts = Post.objects.filter(category=cat)
return render(request,'categories.html',{'category_posts':category_posts})
URLS.py
The urls.py file.
path('category/<str:cat>/', CategoryView, name = 'category'),
CATEGORIES.html
This will be the final display page where the category_posts is displayed as an empty queryset. The for loop is unable to run because category_posts is an empty queryset. Single word categories are also empty(to rule out a slugify issue)
{% extends 'base.html' %}
{% load static %}
{% block content %}
<ul>
{% for post in category_posts %}
<li>
<div class="category">
<a href="{% url 'category' post.category|slugify %}">{{ post.category }}</a>
</div>
<a href="{% url 'article-detail' post.pk %}">
<h3><b>{{ post.title }} </b></h3>
<p class=card-date>
<big>{{ post.author }}</big>
<small>-{{ post.post_date }}</small>
</p>
<p class="excerpt-text">{{ post.body | slice:"100" |safe}}</p>
<div class="article-thumbnail">
<img src="{% static "images/bg.png" %}" alt="article-thumbnail" >
</div>
<div class="overlay">
</a>
</li>
{% endfor %}
{% endblock %}
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