将“posts-details-page”反转，未找到参数“（''，）”。尝试了 1 种模式： ['all_posts/（？P<slug>[-a-zA-Z0-9_]+）$']

问：

我已经构建了基本的 Django 项目，但在尝试从项目中检索所有帖子时出现错误。您可以从 github 下载代码来创建问题，如果有人可以提供帮助，请指导我如何解决此问题。https://github.com/techiekamran/BlogProject.git 和分支名称为 starting-blog-project

urls.py
from django.urls import path
from blogapp import views
urlpatterns = [
     path("",views.starting_page,name='starting-page'),
     path("posts",views.posts,name="posts-page"),
     path("all_posts/<slug:slug>",views.post_details,name='posts-details-page'),
     #posts/my-first-post
]

views.py

from datetime import date
from django.shortcuts import render

def get_date(all_posts):
    return all_posts['date']

def starting_page(request):
    sorted_post = sorted(all_posts,key=get_date)
    latest_post = sorted_post[-3:]
    return render(request,'blogapp/index.html',{'posts':latest_post})

def posts(request):
    return render(request,'blogapp/all-posts.html',{'all_posts':all_posts})
    

def post_details(request,slug):
    identified_post=next(post for post in all_posts if post['slug']==slug)
    return render(request,'blogapp/post-details.html',{'post':identified_post})

index.html

{% extends "_base.html" %}
{% load static %}
{% block title %}
Home
{% endblock %}

{% block css_files %} 
<link rel="stylesheet" href="{% static 'blogapp/post.css' %}"/>
<link rel="stylesheet" href="{% static 'blogapp/index.css' %}"/>
{% endblock %}

{% block content %}

<section id="welcome">
    <header>
        <img src="{% static 'blogapp/images/max.png' %}" alt="Max= The author of this Blog"/>
        <h2>Demo blog des</h2>
    </header>
    <p>Hi, this is the our first blog</p>
</section>

<section id="latest-posts">
    <h2>My latest thoughts</h2>
    <ul>
        {% for post in posts %}
          {% include 'blogapp/includes/post.html' %}
        {% endfor %}
    </ul>

</section>

<section id="about">
    <h2>What I do </h2>
    <p>I love programming</p>
    <p>My goal is to keep</p>
</section>

{% endblock %}
    
post-details.html

{% extends "_base.html" %}
{% load static %}
{% block title %}
{{ post.title }}
<!--This Post Details-->
{% endblock %}

{% block css_files %} 
<link rel="stylesheet" href="{% static "blogapp/post-details.css" %}"/>
{% endblock %}




{% block content %}
<section id="summary">
    {{ post.title }}
    <!--<h2>Post Title</h2>-->
    <article>
        <img src="{% static 'blogapp/images/mountains.jpg' %}" alt="Post Title"/>
        
        <address>By Demo</address>
        <div>
            Last updated on <time>Oct 20</time>
        </div>
    </article>
</section>

<main>
    {{ post.content }}
    <!--<p>this is dumy data</p>
    <p>this is dumy data</p>
    <p>this is dumy data</p>
    <p>this is dumy data</p>
-->
</main>
{% endblock %}


all-posts.html

{% extends "_base.html" %}
{% load static %}
{% block title %}
All my posts
{% endblock %}

{% block css_files %} 
<link rel="stylesheet" href="{% static "blogapp/post.css" %}"/>
<link rel="stylesheet" href="{% static 'blogapp/all-post.css' %}"/>
{% endblock %}

{% block content %}
<section id="all-posts">
    <h2>My collected posts</h2>
    <ul>
        {% for post in all_post %}
        {% include 'blogapp/includes/post.html' %}
        {% endfor %}
        <!-- 
        {% include 'blogapp/includes/post.html' %}
        {% include 'blogapp/includes/post.html' %}
        {% include 'blogapp/includes/post.html' %}
        {% include 'blogapp/includes/post.html' %}
        {% include 'blogapp/includes/post.html' %}
        {% include 'blogapp/includes/post.html' %}
        -->
    </ul>
</section>
{% endblock %}

post.html

{% load static %}

<li>
    
    <article class="post">
  <a href="{% url 'posts-details-page' post.slug %}">Link</a>
        <a href="{% url 'posts-details-page' post.slug %}">
        <img src="{% static 'blogapp/images/'|add:post.image %}" alt="Mountain Hiking" />
       <!--<img src="{% static 'blogapp/images/mountains.jpg' %}" alt="Mountain Hiking" />-->
        <div class="post__content">
            {{ post.slug }}
            <h3>{{ post.title }}
            <p>{{ post.content }}</p>
            
            <!--
                <h3>Mountain hiking</h3>
                <p>There is nothing hike</p>
            -->
            
            
        </div>
        </a>
    </article>
</li>