1. Flask快速入门

一、代码

1. login.py

from flask import Flask, render_template, request, redirect, session, url_for

app = Flask(__name__)
app.secret_key = 'mr.hu'
app.config['DEBUG'] = True

USERS = {
    1: {'name': "张桂", 'age': 17, 'gender': '男', 'text': '你过得好不好别人未必知道,但你一'},
    2: {'name': '朱晨', 'age': 29, 'gender': '男', 'text': '平时骂你就算了,非要等我打你才知'},
    3: {'name': '付息', 'age': 30, 'gender': '女', 'text': '人们都说陪伴是最长情的告白,其实'}
}


@app.route('/index', methods=['GET'])
def index():
    # 判断是否登录了
    user = session.get('user_info')
    if not user:
        # 反向生成url
        url = url_for('login')
        return redirect(url)
    return render_template('index.html', user_dict=USERS)


@app.route('/detail/<int:id>', methods=['GET'])
def detail(id):
    user = session.get('user_info')
    if not user:
        url = url_for('login')
        return redirect(url)
    info = USERS.get(id)
    return render_template('detail.html', info=info)

# endpoint反向url解析, 必须唯一
@app.route('/login', methods=['GET', 'POST'], endpoint='login')
def login():
    if request.method == 'GET':
        return render_template('login.html')
    else:
        user = request.form.get('user')
        pwd = request.form.get('pwd')
        if user == 'huqi' and pwd == '123':
            session['user_info'] = user
            return redirect('/index')

        return render_template('login.html', error="用户名或密码错误")


if __name__ == '__main__':
    app.run()

2. login.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>用户登录</h1>
    <form method="post">
        <input type="text" name="user">
        <input type="text" name="pwd">
        <input type="submit" value="登录">{{error}}
    </form>
</body>
</html>

3. index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
</head>
<body>
    <title>用户列表</title>
    <h1>用户列表</h1>
    <table>
        {% for k,v in user_dict.items() %}
        <tr>
            <td>{{k}}</td>
            <td>{{v.name}}</td>
            <td>{{v.get('age')}}</td>
            <td>{{v['gender']}}</td>
            <td><a href="/detail/{{k}}">自我介绍</a></td>
        </tr>
        {% endfor %}
    </table>
</body>
</html>

4. detail.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>详细介绍 - {{info.name}}</h1>
    <div>
        {{info.text}}
    </div>
</body>
</html>
posted @ 2020-04-05 09:33  qi.hu  阅读(141)  评论(0编辑  收藏  举报