喜欢和评论部分：在Django中

在Django中，可以通过以下方式来实现喜欢和评论部分：

1. 定义模型类：

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

class Post(models.Model):
    title = models.CharField(max_length=100)
    content = models.TextField()
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    likes = models.ManyToManyField(User, related_name='liked_posts')

    def __str__(self):
        return self.title

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

    def __str__(self):
        return self.content

2. 创建URL路由：

from django.urls import path

from . import views

urlpatterns = [
    # ...
    path('post/<int:post_id>/like/', views.like_post, name='like_post'),
    path('post/<int:post_id>/comment/', views.comment_post, name='comment_post'),
]

3. 编写视图函数：

from django.shortcuts import render, redirect, get_object_or_404
from django.contrib.auth.decorators import login_required

from .models import Post, Comment

@login_required
def like_post(request, post_id):
    post = get_object_or_404(Post, pk=post_id)
    if request.user in post.likes.all():
        post.likes.remove(request.user)
    else:
        post.likes.add(request.user)
    return redirect('post_detail', post_id=post_id)

@login_required
def comment_post(request, post_id):
    post = get_object_or_404(Post, pk=post_id)
    if request.method == 'POST':
        content = request.POST['content']
        comment = Comment(post=post, author=request.user, content=content)
        comment.save()
    return redirect('post_detail', post_id=post_id)

4. 在模板中使用：

<!-- 喜欢按钮 -->
{% if request.user.is_authenticated %}
  {% if request.user in post.likes.all %}
    <a href="{% url 'like_post' post_id=post.id %}">取消喜欢</a>
  {% else %}
    <a href="{% url 'like_post' post_id=post.id %}">喜欢</a>
  {% endif %}
{% endif %}

<!-- 评论表单 -->
{% if request.user.is_authenticated %}
  <form method="post" action="{% url 'comment_post' post_id=post.id %}">
    {% csrf_token %}
    <textarea name="content"></textarea>
    <button type="submit">评论</button>
  </form>
{% endif %}

<!-- 评论列表 -->
{% for comment in post.comments.all %}
  <p>{{ comment.content }}</p>
{% empty %}
  <p>暂无评论</p>
{% endfor %}

以上代码示例实现了在Django中的喜欢和评论功能。注意，这只是一个简单示例，实际项目中可能还需要进行更多的验证和处理。