博客系统

博客系统是一个展示文章、评论等功能的项目。

#### **2.1 模型设计**

定义文章和评论模型。

**示例：文章和评论模型**

Python复制

```python
from django.db import models
from django.contrib.auth.models import User

class Post(models.Model):
    title = models.CharField(max_length=200)
    content = models.TextField()
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

class Comment(models.Model):
    post = models.ForeignKey(Post, related_name='comments', on_delete=models.CASCADE)
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    content = models.TextField()
    created_at = models.DateTimeField(auto_now_add=True)
```

#### **2.2 视图与模板**

创建文章列表、文章详情和评论的视图。

**示例：文章列表视图**

Python复制

```python
from django.shortcuts import render
from .models import Post

def post_list(request):
    posts = Post.objects.all()
    return render(request, 'blog/post_list.html', {'posts': posts})
```

**示例：文章详情模板**

HTML复制

```html

{% extends 'base.html' %}

{% block content %}
<h1>{{ post.title }}</h1>
<p>{{ post.content }}</p>
<p>By {{ post.author.username }} on {{ post.created_at }}</p>

<h2>Comments</h2>
{% for comment in post.comments.all %}
    <p>{{ comment.content }} - {{ comment.author.username }}</p>
{% endfor %}
{% endblock %}
```

###