基于Flask框架开发的球员数据库系统

app.py  数据库采用Flaks-SQLAlchemy进行操作

import time

from flask import Flask, render_template, url_for,request,redirect,flash
from flask_sqlalchemy import SQLAlchemy
import os
import click

app = Flask(__name__)
app.config['SECRET_KEY'] = '20190847'
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///' + os.path.join(app.root_path, 'data.db')
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False  # 关闭对模型修改的监控
db = SQLAlchemy(app)


class User(db.Model):
    id = db.Column(db.INTEGER, primary_key=True)
    name = db.Column(db.String(100))


class Players(db.Model):
    id = db.Column(db.INTEGER, primary_key=True)
    playername = db.Column(db.String(30))
    position = db.Column(db.String(30))
    number = db.Column(db.INTEGER)


@app.cli.command()  # 注册为命令
@click.option('--drop', is_flag=True, help='Create after drop.')
# 设置选项
def initdb(drop):
    """Initialize the database."""
    if drop:  # 判断是否输入了选项
        db.drop_all()
    db.create_all()
    click.echo('数据库初始化成功')  # 输出提示信息


@app.cli.command()
def forge():
    """Generate fake data."""
    from app import User, Players
    # 全局的两个变量移动到这个函数内 初始数据库
    username = '东北大学工商管理学院'
    players = [
        {'playername': 'Messi', 'position': 'GodMan', 'number': 30},
        {'playername': '朱文甫', 'position': '右边翼卫（RWB）', 'number': 21},
        {'playername': '马尔蒂尼', 'position': '左后卫（LB）', 'number': 3},
        {'playername': 'Van dank', 'position': '中后卫（CB）', 'number': 2},
        {'playername': 'Ramos', 'position': '中后卫（CB）', 'number': 4},
        {'playername': 'Kante', 'position': '防守型后腰(CDM)', 'number': 6},
        {'playername': '德布劳内', 'position': '前腰（CAM）', 'number': 17},
        {'playername': 'Neymar JR', 'position': '前腰（CAM）', 'number': 11},
        {'playername': 'Mambape', 'position': '左边锋（LW）', 'number': 7},
        {'playername': 'Haaland', 'position': '中锋（ST）', 'number': 9},
        {'playername': '多纳鲁马', 'position': '门将（GK）', 'number': 1},
    ]
    user = User(name=username)
    db.session.add(user)
    for i in players:
        player = Players(playername=i['playername'], position=i['position'], number=i['number'])
        db.session.add(player)
    db.session.commit()
    click.echo("虚拟数据添加成功")


@app.context_processor
def inject_user():
    user = User.query.first()
    return dict(name=user.name)


@app.route('/',methods=['GET','POST'])
def index():
    #判断请求如果是POST请求
    if request.method == 'POST':
        playername = request.form.get('addplayername')
        position = request.form.get('addposition')
        number = request.form.get('addnumber')
        if playername or position or number:#如果输入符合添加要求
            player_add1 = Players(playername = playername,position = position,number = number)
            db.session.add(player_add1)
            db.session.commit()#提交数据库参数
            flash("新球员添加成功")#成功提示
            return redirect(url_for('index'))#重定向回主页
    #如果收到的是GET
    players = Players.query.all()
    return render_template('index.html',players=players)

@app.route('/player/edit/<int:player_id>',methods=['GET','POST'])
def edit(player_id):
    player = Players.query.get_or_404(player_id)

    if request.method =='POST':
        edited_name = request.form['edited_name']
        edited_positon = request.form['edited_position']
        edited_number = request.form['edited_number']
        player.playername = edited_name
        player.position = edited_positon
        player.number = edited_number
        db.session.commit()
        flash('修改成功！')
        return redirect(url_for('index'))
    return render_template('edit.html',player=player)

@app.route('/player/delete/<int:player_number>', methods=['POST']) #限定只接受 POST 请求
def delete(player_number):
    player = Players.query.get_or_404(player_number) # 获取电影记录
    db.session.delete(player) # 删除对应的记录
    db.session.commit() # 提交数据库会话
    flash('球员删除成功')
    return redirect(url_for('index')) # 重定向回主页

@app.route('/test')
def test_for_url():
    return url_for('index')


@app.errorhandler(404)
def page_not_found(e):
    return render_template('404.html'), 404


@app.route('/writerPage')
def writerPage():
    return "朱文甫 版权所有 联系方式18365051200"

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    {% for message in get_flashed_messages() %}
        <div class="alert">{{ message }}</div>
    {% endfor %}
    <title>{{ name }}校园足球数据库系统</title>
    <link rel="stylesheet" href="{{ url_for('static', filename='StyleDemo.css') }}" type="text/css">
    <link rel="icon" href="{{ url_for('static', filename='东大校徽.jpeg') }}">
</head>
<body>
    <h2>欢迎{{ name }}， 您现在可以操作球员数据库系统</h2>
    <span>
        <form action="/" method="post">
            球员姓名 <input type="text" name="addplayername" autocomplete="off" required>
            球员位置 <input type="text" name="addposition" autocomplete="off" required>
            球员号码 <input type="number" name="addnumber" autocomplete="off" required>
        <input class="btn" type="submit" name="submit" value="添加球员">
        </form>
    </span>
    <p>{{ name }}共有{{ players|length }} 位队员,分别是</p>
    <ul class="movie-list">
    {% for p in players %} {# 迭代 movies 变量 #}
        <li>
           {{ p.playername }}————{{ p.position }}————{{ p.number }}号
            <span class="float-right">
                <a class="btn">删除球员</a>
                <a class="btn" href="{{ url_for('edit',player_id=p.id) }}">编辑球员</a>
                <a class="detail" href="https://www.baidu.com" target="_blank" title="查看此球员详细信息">球员资料详情</a>
            </span>
        </li>
        {# 等同于movie['title'] #}
    {% endfor %} {# 使用 endfor 标签结束 for 语句 #}
    </ul>
    <nav>
        <ul>
            <li><a href="{{ url_for('index') }}">主页链接在这</a></li>
        </ul>
    </nav>
    <footer>
        <small>&copy; 2021 <a href="http://127.0.0.1:5000/writerPage">CopyRight Students of NEU,WenFu Zhu</a></small>
    </footer>
</body>
</html>

edit.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    {% for message in get_flashed_messages() %}
        <div class="alert">{{ message }}</div>
    {% endfor %}
    <title>修改球员</title>
    <link rel="stylesheet" href="{{ url_for('static', filename='StyleDemo.css') }}" type="text/css">
    <link rel="icon" href="{{ url_for('static', filename='东大校徽.jpeg') }}">
</head>
<body>
    <h2>欢迎，您现在可以修改{{ player.playername }}的信息了</h2>
    <h3>编辑球员</h3>
    <form method="post">
        修改后球员姓名<input type="text" name="edited_name" autocomplete="off" requiredvalue="{{ player.playername }}">
        修改后位置<input type="text" name="edited_position" autocomplete="off" requiredvalue="{{ player.position }}">
        修改后球员号码<input type="number" name="edited_number" autocomplete="off" requiredvalue="{{ player.number }}">
        <input class="btn" type="submit" name="submit" value="提交修改申请">
    </form>
    <nav>
        <ul>
            <li><a href="{{ url_for('index') }}">主页链接在这</a></li>
        </ul>
    </nav>
    <footer>
        <small>&copy; 2021 <a href="http://127.0.0.1:5000/writerPage">CopyRight Students of NEU,WenFu Zhu</a></small>
    </footer>
</body>
</html>

 styledemo.css

}
/* 球员列表 */
.movie-list {
    list-style-type: none;
    padding: 0;
    margin-bottom: 10px;
    box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
}
.movie-list li {
    padding: 12px 24px;
    border-bottom: 1px solid #ddd;
}
.movie-list li:last-child {
    border-bottom:none;
}
.movie-list li:hover {
    background-color: #f8f9fa;
}
/* 详情键按钮 */
nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}
nav li {
    float: left;
}
nav li a {
    display: block;
    color: white;
    text-align: center;
    padding: 8px 12px;
    text-decoration: none;
}
nav li a:hover {
    background-color: #111;
}
.float-right {
    float: right;
}
.detail{
    font-size: 12px;
    font-weight: bold;
    color: black;
    text-decoration: none;
    background: cyan;
    border-radius: 5px;
    padding: 3px 5px;
}
/* 表单格式 */
input[type=submit] {
    font-family: inherit;
}
input[type=text] {
    border: 1px solid #ddd;
}
input[type="text"] {
    width: 80px;
}
input[type="number"] {
    width: 50px;
}
.btn {
    font-size: 12px;
    padding: 3px 5px;
    text-decoration: none;
    cursor: pointer;
    background-color: white;
    color: black;
    border: 1px solid #555555;
    border-radius: 5px;
}
.btn:hover {
    text-decoration: none;
    background-color: black;
    color: white;
    border: 1px solid black;
}
/* 消息格式 */
.alert {
    position: relative;
    padding: 7px;
    margin: 7px 0;
    border: 1px solid transparent;
    color: #004085;
    background-color: #cce5ff;
    border-color: #b8daff;
    border-radius: 5px;
}

标签：Flask,app,db,number,player,球员,position,数据库系统,playername
来源： https://blog.csdn.net/ggffsdgdfs/article/details/120733128