Python Flask: 实现笔记列表功能（简单版）

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技术选型

Flassk + 文件存储

Flask + 数据库存储

我们这次选择前者。

代码

manage.py: 

# 控制台
@app.route('/dashboard', methods=['GET', 'POST'])
@is_logged_in
def dashboard():
    #模拟一个笔记数据，
    #result = [{"id":1,"title":"Python运维开发","author":"xiaoli","create_date":"2022-12-4 12:20:000"}]
    result = []
    num=0
    #sample.csv内容：
    #1,Python运维开发,xiaoli,2022-12-4 12:20:00,Python运维开发是一个学习python语言的课程，非常有意思！
    
    with open('sample.csv',"r") as fr:
        for line in fr:    #文件对象可以直接迭代
            #print(line)
            r = line.split(",")
            t={}
            t['id']= r[0];t['title']=r[1];t['author']=r[2];t['update_date']=r[3];
            t['content']=r[4]
            result.append(t)
            num = num+1
            
    if result: # 如果笔记存在，赋值给articles变量
        return render_template('dashboard.html', articles=result)
    else:      # 如果笔记不存在，提示暂无笔记
        msg = '暂无笔记信息'
        return render_template('dashboard.html', msg=msg)


模板

dashboard.html: 

<html>
  <head>
    <meta charset="utf-8">
    <title>读书笔记</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <link rel="stylesheet" href="/static/css/style.css">
    <script src="https://cdn.bootcss.com/jquery/2.2.4/jquery.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
  </head>
  <body>
    <nav class="navbar navbar-default">
    <div class="container">
      <div class="navbar-header">
        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
          <span class="sr-only">Toggle navigation</span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
        </button>
        <a class="navbar-brand" href="/">学习笔记</a>
      </div>
      <div id="navbar" class="collapse navbar-collapse">
        <ul class="nav navbar-nav">
          <li><a href="/">主页</a></li>
          <li><a href="/articles">笔记</a></li>
          <li><a href="/about">关于</a></li>
        </ul>
        <ul class="nav navbar-nav navbar-right">
 
            <li><a>欢迎 {{session.username}}</a></li>
            <li><a href="/logout">退出</a></li>

        </ul>
      </div><!--/.nav-collapse -->
    </div>
  </nav>
    <div class="container">

  <h1>控制台 <small> 欢迎 {{session.username}}</small></h1>
  <a class="btn btn-success" href="/add_article"> 添加笔记 </a>
  <hr>
  <table class="table table-striped">
    <tr>
      <th>ID</th>
      <th>标题</th>
      <th>作者</th>
      <th>日期</th>
      <th></th>
      <th></th>
    </tr>
    {% for article in articles %}
      <tr>
        <td>{{article.id}}</td>
        <td>{{article.title}}</td>
        <td>{{article.author}}</td>
        <td>{{article.update_date}}</td>
        <td><a href="edit_article/{{article.id}}" class="btn btn-default pull-right">Edit</a></td>
        <td>
          <form action="" method="post">
            <input type="hidden" name="_method" value="DELETE">
            <input type="submit" value="Delete" class="btn btn-danger">
          </form>
        </td>
      </tr>
    {% endfor %}
  </table>
<!-- Footer -->
<footer class="page-footer font-small blue" style="margin-top: 50px">
    <!-- Copyright -->
    <div class="footer-copyright text-center py-3">
        Copyright ©2007-2019 <a href="http://www.mingrisoft.com">明日科技有限公司</a>
        All Rights Reserved 吉ICP备10002740号-2 吉公网安备22010202000132
    </div>
    <!-- Copyright -->
  </footer>
  <!-- Footer -->
  </body>
</html>

效果图

Python2022120401.png

取自“http://www.openbrains.net/mediawiki/index.php?title=Python_Flask:_实现笔记列表功能（简单版）&oldid=32366”