基本上我想要实现的是在帖子中找到 URL，例如，如果我发布这个:

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. 
https://www.youtube.com/watch?v=example  

它看起来像这样: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

模型.py:

from django.db import models 
 
class NewsFeed_Articles(models.Model): 
    title = models.CharField(max_length = 120)  
    post = models.TextField() 
    date = models.DateTimeField() 
 
def __str__(self): 
    return self.title 

post.html:

{% extends "Feed/wrapper.html" %} 
 
{% block content %} 
 
  <div class="card"> 
  <h2 class="text-info">{{newsfeed_articles.title}}</h2> 
  <h6 class="text-info">{{newsfeed_articles.date|date:"d-m-Y в H:i:s"}}</h6> 
  <p>{{newsfeed_articles.post|safe|linebreaks}}<p> 
  <div class="fakeimg" style="height:200px;">Image</div> 
  </div> 
 
{% endblock %} 

请您参考如下方法:

使用代码将 YouTube 网址转换为 YouTube 嵌入:

import re 
 
def convert_ytframe(text): 
  _yt = re.compile(r'(https?://)?(www\.)?((youtu\.be/)|(youtube\.com/watch/?\?v=))([A-Za-z0-9-_]+)', re.I) 
  _frame_format = '<iframe width="560" height="315" src="https://www.youtube.com/embed/{0}" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>' 
   
  def replace(match): 
    groups = match.groups() 
    return _frame_format.format(groups[5]) 
  return _yt.sub(replace, text) 

这是您可以自己测试的工作示例:repl.it/@themisir/AromaticAvariciousMarketing
此外，您可以在此处测试正则表达式:regex101.com/r/97yhSH/1

更新

简化了代码。

import re 
 
yt_link = re.compile(r'(https?://)?(www\.)?((youtu\.be/)|(youtube\.com/watch/?\?v=))([A-Za-z0-9-_]+)', re.I) 
yt_embed = '<iframe width="560" height="315" src="https://www.youtube.com/embed/{0}" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>' 
 
def convert_ytframe(text): 
  return yt_link.sub(lambda match: yt_embed.format(match.groups()[5]), text)