二十加载静态文件,父模板的继承和扩展

Posted 2020-10-13 .Green

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用url_for加载静态文件
1. <script src="{{ url_for(\'static\',filename=\'js/login.js\') }}"></script>
2. flask 从static文件夹开始寻找
3. 可用于加载css, js, image文件
继承和扩展
1. 把一些公共的代码放在父模板中，避免每个模板写同样的内容。base.html
2. 子模板继承父模板
  1. {% extends \'base.html’ %}
3. 父模板提前定义好子模板可以实现一些自己需求的位置及名称。block
  1. <title>{% block title %}{% endblock %}-MIS问答平台</title>
  2. {% block head %}{% endblock %}
  3. {% block main %}{% endblock %}
4. 子模板中写代码实现自己的需求。block
  1. {% block title %}登录{% endblock %}

3.首页、登录页、注册页都按上述步骤改写。

base.py

from flask import Flask,render_template

app = Flask(__name__)


@app.route(\'/\')
def index():
    return render_template(\'index.html\')

@app.route(\'/login/\')
def login():
    return render_template(\'login.html\')

@app.route(\'/regist/\')
def regist():
    return render_template(\'regist.html\')


if __name__ == \'__main__\':
    app.run(debug=True)

index.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>{% block title%}{% endblock %}base</title>
    <link rel="stylesheet" type="text/css" href="../static/css/base.css">
    <link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">

    <script src="../static/js/base.js"></script>
{% block head %}
{% endblock %}
</head>
<body id="mybody">

<nav class="navbar navbar-inverse" role="navigation">
    <div class="container-fluid" id="container">
        <div class="navbar-header">
            <a class="navbar-brand" href="#">首页</a>
        </div>
        <div>
            <ul class="nav navbar-nav">
                <li><a href="http://127.0.0.1:5000/login/" onclick="">登录</a></li>
                <li><a href="http://127.0.0.1:5000/regist/" onclick="">注册</a></li>
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                        更多 <b class="caret"></b>
                    </a>
                    <ul class="dropdown-menu">
                        <li><a href="#">收藏</a></li>
                        <li><a href="#">分享</a></li>
                        <li><a href="#">搜索</a></li>
                        <li class="divider"></li>
                        <li><a href="#">点赞</a></li>
                    </ul>
                </li>
                <li><a href="#">||</a></li>
            </ul>
        </div>
        <div style="float: right">
            <img id="myonoff" onclick="mySwitch()" src="http://www.runoob.com/images/pic_bulbon.gif" style="width:40px" >
        </div>
        <div>
            <input type="text" name="user" id="user" placeholder="请输入搜索关键词">
            <input type="button" value="搜索" class="btn btn-success" onclick="">
        </div>
    </div>
</nav>
{% block main %}{% endblock %}
</body>
</html>

login.html

{% extends \'index.html\' %}
{% block title %}登录{% endblock %}

{% block head %}
    <link href="../static/css/login.css" rel="stylesheet" type="text/css">
    <script src="../static/js/login.js"></script>
{% endblock %}

{% block main %}
<body class="bg">
<div id="container">
    <div class="box">
        <h2 id="denglu">登录</h2>

        <div class="input_box">
            <input type="text" id="uname" placeholder="请输入用户名">
        </div>
        <div class="input_box">
            <input type="password" id="upass" placeholder="请输入密码">
        </div>
        <div class="error" id="error_box"><br></div>
        <div class="input_box">
            <button id="login" type="submit" onclick="fnLogin()">登录</button>
            <button id="cancel" type="cancel" onclick="fnLogin()">取消</button>
        </div>

   </div>
{% endblock %}
</body>
</html>

regist.html

<{% extends \'index.html\' %}
{% block title %}注册{% endblock %}

{% block head %}
    <link rel="stylesheet" type="text/css" href="../static/css/login.css">
    <script src="../static/jsp/regist.js"></script>
{% endblock %}


{% block main %}
<body class="bg">
<div id="container">

<div class="box">
    <h2 id="zhuce">注册</h2>

    <div class="input_box">
        <input type="text" id="uname" placeholder="请输入用户名">

    </div>
    <div class="input_box">
        <input type="phone" id="phone" type="text" placeholder="手机号">
    </div>
    <div class="input_box">
        <input type="password" id="pass" placeholder="请输入密码">

    </div>
    <div class="input_box">
        <input type="password" id="password" placeholder="请再次输入密码">
    </div>
    <<div class="error" id="error_box"><br></div>

    <div class="input_box">
        <button id="register" onclick="fnLogin()">注册</button>
    </div>
</div>
</body>
{% endblock %}
</html>

运行结果如图：

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