2023-04-18 23:06阅读: 22评论: 0推荐: 0

flask案例

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>

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posted @ 2023-04-18 23:06 __username 阅读(22) 评论(0) 编辑收藏举报

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GOOD!

	#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>