day 51 随机验证码, 验证登陆 ,以及 装饰器在函数中的应用

　　前端很好的session 的例子 (随机验证码登陆)

https://github.com/Endless-Clould/qianduan

参考:

验证码登录

https://www.cnblogs.com/Michael--chen/p/10569162.html

　　视图层:

　　路由层:

　　模板层:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
    <style>
        .con{
            margin-top: 120px;
        }
    </style>
</head>
<body>

<div class="container">
    <div class="row con">
        <form action="/val_login/" method="post">
            {% csrf_token %}
            <div class="form-group col-sm-6 col-sm-offset-3">
                <label for="exampleInputEmail1">用户名</label>
                <input type="text" class="form-control" name="username" id="exampleInputEmail1" placeholder="用户名">
            </div>
            <div class="form-group col-sm-6 col-sm-offset-3">
                <label for="exampleInputPassword1">密码</label>
                <input type="password" class="form-control" name="pwd" id="exampleInputPassword1" placeholder="密码">
            </div>
            <div class="form-group col-sm-6 col-sm-offset-3">
                <label for="exampleInputFile">验证码</label>
                <div class="row">
                    <div class="col-sm-6">
                        <input type="text" name="valid_code" id="exampleInputFile" class="form-control col-sm-3">
                    </div>
                    <div class="col-sm-4">
{#                        <img src="/static/images/111.png" alt="">#}
                        <img src="/val_img/ " alt="">    {# 这行的/val_img/ 响应val_img 视图  获取内容#}
                    </div>
                </div>
            </div>
            <div class="form-group col-sm-6 col-sm-offset-3">
                <button type="submit" class="btn btn-defaultcol-sm-offset-3">登录</button>
            </div>

        </form>
        <p>asdasdadadad{{ret}}</p>
    </div>
</div>

</body>
</html>

　　　　展示i效果: