简单的flask ‘s Demo
#app.py
from flask import Flask, render_template, jsonify, request, redirect, url_for, session
import functools
app = Flask(__name__)
app.secret_key = 'adsa12dsa3456dasdsadsa'
DATA_DICT = {
1: {"name": "陈三", "age": 73},
2: {"name": "程思", "age": 84}
}
def auth(func):
@functools.wraps(func)
def inner(*args, **kwargs):
username = session.get('xxx')
if not username:
redirect('/login')
return inner()
@app.route('/login', methods=['GET', 'POST'])
def login(): # put application's code here
# return jsonify({'code': 100, 'data': [1, 2, 3]})
# return 'Hello World!' # HttpRespose
if request.method == 'GET':
return render_template("login.html")
# print(request.form)
user = request.form.get('user')
pwd = request.form.get('pwd')
if user == 'root' and pwd == '123456':
session['xxx'] = user
return redirect('/index')
error = '用户名或密码错误'
return render_template("login.html", error=error)
@app.route('/index', endpoint='idx') # endpoint不写默认函数名 （不能重名）
@auth
def index():
# return '首页'
data_dict = DATA_DICT
return render_template('index.html', data_dict=data_dict)
@app.route('/edit', methods=['GET', 'POST'])
@auth
def edit():
nid = request.args.get('nid')
nid = int(nid)
if request.method == 'GET':
info = DATA_DICT[nid]
# print(nid)
# return '修改'
return render_template('edit.html', info=info)
user = request.form.get('user')
age = request.form.get('age')
DATA_DICT[nid]['name'] = user
DATA_DICT[nid]['age'] = age
return redirect(url_for('idx'))
@app.route('/delete/<int:nid>')
@auth
def delete(nid):
# print(nid)
del DATA_DICT[nid]
# return '删除'
# return redirect('/index')
return redirect(url_for('idx'))
if __name__ == '__main__':
app.run(debug=True)
// login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>登录页面</h1>
<form action="" method="post">
<input type="text" name="user">
<input type="text" name="pwd">
<input type="submit" value="提交"> <span style="color: red" >{{ error }}</span>
</form>
</body>
</html>
// index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>用户列表</h1>
<table border="1">
<thead>
<tr>
<th>ID</th>
<th>用户名</th>
<th>年龄</th>
<th>操作</th>
</tr>
</thead>
<tbody>
{% for key, value in data_dict.items() %}
<tr>
<td>{{key}}</td>
<td>{{value['name']}}</td>
<td>{{value['age']}}</td>
<td>
<a href="/edit?nid={{ key }}">编辑</a>
<a href="/delete/{{ key }}">删除</a>
</td>
</tr>
{% endfor %}
</tbody>
</table>
</body>
</html>
// edit.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>修改</h1>
<form action="" method="post">
<input type="text" name="user" value="{{ info.name }}">
<input type="text" name="age" value="{{ info.age }}">
<input type="submit" value="提交">
</form>
</body>
</html>