小白flask 学习练习 学生管理系统
#导入flask模块from flask import Flask ,render_template,redirect,request
#使用Flask 对象创建一个app对象
app = Flask(__name__)
students = [
{'name': 'lihu', 'chinese': '65', 'math': '65', 'english': '50'},
{'name': 'wangwu', 'chinese': '65', 'math': '65', 'english': '50'},
{'name': 'niutou', 'chinese': '65', 'math': '65', 'english': '50'},
]
@app.route('/login',methods=['GET','POST'])
def login():
#登录的功能
#全栈项目 前后端不分离
#return实现登录的逻辑
#request 对象可以拿到浏览器传递给服务器的所有数据
if request.method == 'POST':
username = request.form.get('username')
password = request.form.get('password')
#登录成功之后，链接数据库，校验账号密码
print("从服务器接收到的数据",username,password)
#登录成功之后，应该跳转到管理页面
return redirect('/admin')#redirect参数是跳转的路由地址
returnrender_template('login.html')
@app.route('/admin')
def admin():
returnrender_template('admin.html',students=students)
@app.route('/add',methods =['GET','POST'])
def add():
#复制框架源码
if request.method == 'POST':
username = request.form.get('username')
chinese = request.form.get('chinese')
math = request.form.get('math')
englisn = request.form.get('english')
students.append( {'name': username, 'chinese': chinese, 'math': math, 'english': englisn})
returnredirect('/admin')
returnrender_template('add.html')
@app.route('/delete',methods=['GET','POST'])
def delete():
#在后台需要拿到学员的名字
username = request.args.get('name')
print(username)
forstuinstudents:
ifstu['name'] == username:
students.remove(stu)
print(students)
return redirect('/admin')
@app.route('/change',methods=['GET','POST'])
def change():
if request.method == 'POST':
username = request.form.get('username')
chinese = request.form.get('chinese')
math = request.form.get('math')
englisn = request.form.get('english')
forstuin students:
if stu['name'] == username:
stu['chinese'] =chinese
stu['math'] = math
stu['englisn'] = englisn
returnredirect('/admin')
#先显示学员的数据，然后再浏览修改，提交到服务器保存
username = request.args.get('name')
print(username)
for stu in students:
if stu['name'] == username:
#需要在页面渲染学生的成绩数据
return render_template('change.html',students=stu)
#需要实现其他的功能（例如退出，查看学生信息）等等其他的功能，该怎么实现
if __name__ == '__main__':
app.run()
#--------------------------------------------------------------------------------------<!DOCTYPE html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
{# 想要一个表格 重点复制框架源码 #}
<table style="width: 400px;margin: 100pxauto" class="table">
<thead>
<tr>
<th scope="col">姓名</th>
<th scope="col">语文</th>
<th scope="col">数学</th>
<th scope="col">英语</th>
<th scope="col">操作</th>
</tr>
</thead>
{#
需要将python对象的数据显示到浏览器上 需要使用 模板语法
jinja2（flask）numjucks（javascript） moka（django） vue
jinja2 可以直接在html中使用Python的逻辑用2个大括号进行渲染 {{}}
#}
<tbody>
{% forstu in students %}
<tr>
<th>{{ stu.name }}</th>
<td>{{ stu.chinese }}</td>
<td>{{ stu.math }}</td>
<td>{{ stu.english }}</td>
<td><a href="/change?name={{ stu.name }}">修改</a> <a href="/delete?name={{ stu.name }}">删除</a> </td>
</tr>
{% endfor %}
</tbody>
</table>
<div style="width: 400px;margin: 10px auto" class="container">
<div class="row">
<div class="col-4">
<a href="/add" >新增学员信息</a>
</div>
</div>
</body>
</html><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>新增学员</title>
{# 导入框架css #}
{#<link rel="stylesheet" href="/static/css/bootstrip.css"> #}
</head>
<body>
<form style="width: 400px;margin: 100px auto" method="POST" >
<div class="mb-3">
<label for="username" class="form-label">姓名</label>
<input type="text"
class="form-control"
id="username"
name="username"
>
<div id="name" class="form-text"></div>
</div>
<div class="mb-3">
<label for="chinese" class="form-label">语文</label>
<input type="text" class="form-control" id="chinese" name = "chinese">
</div>
<div class="mb-3">
<label for="math" class="form-label">数学</label>
<input type="text" class="form-control" id="math" name="math">
<div id="emailHelp" class="form-text"></div>
</div>
<div class="mb-3">
<label for="englisn" class="form-label">英语</label>
<input type="text" class="form-control" id="englisn" name = "english">
</div>
<div class="mb-3 form-check">
<input type="checkbox" class="form-check-input" id="exampleCheck1">
<label class="form-check-label" for="exampleCheck1">记住我</label>
</div>
<button type="submit" class="btn btn-primary">提交</button>
</form>
</body>
</html><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>修改</title>
{# 导入框架css #}
{#<link rel="stylesheet" href="/static/css/bootstrip.css"> #}
</head>
<body>
<form style="width: 400px;margin: 100px auto" method="POST" >
<div class="mb-3">
<label for="username" class="form-label">姓名</label>
<input type="text"
class="form-control"
id="username"
name="username"
value="{{ students['name'] }}"
>
<div id="name" class="form-text"></div>
</div>
<div class="mb-3">
<label for="chinese" class="form-label">语文</label>
<input type="text"
class="form-control"
id="chinese"
name = "chinese"
value="{{ students['chinese'] }}"
>
</div>
<div class="mb-3">
<label for="math" class="form-label">数学</label>
<input type="text"
class="form-control"
id="math"
name="math"
value="{{ students['math'] }}"
>
<div id="emailHelp" class="form-text"></div>
</div>
<div class="mb-3">
<label for="englisn" class="form-label">英语</label>
<input type="text"
class="form-control"
id="englisn"
name = "englisn"
value="{{ students['english'] }}"
>
</div>
<div class="mb-3 form-check">
<input type="checkbox" class="form-check-input" id="exampleCheck1">
<label class="form-check-label" for="exampleCheck1">记住我</label>
</div>
<button type="submit" class="btn btn-primary">提交</button>
</form>
</body>
</html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>登录</title>
{# 导入框架css #}
{#<link rel="stylesheet" href="/static/css/bootstrip.css"> #}
</head>
<body>
<form style="width: 400px;margin: 100px auto" method="POST" >
<div class="mb-3">
<label for="exampleInputEmail1" class="form-label">账号</label>
<input type="text" class="form-control" id="exampleInputEmail1" name="username">
<div id="emailHelp" class="form-text"></div>
</div>
<div class="mb-3">
<label for="exampleInputPassword1" class="form-label">密码</label>
<input type="password" class="form-control" id="exampleInputPassword1" name = "password">
</div>
<div class="mb-3 form-check">
<input type="checkbox" class="form-check-input" id="exampleCheck1">
<label class="form-check-label" for="exampleCheck1">记住我</label>
</div>
<button type="submit" class="btn btn-primary">登录</button>
</form>
</body>
</html> 小白选手 占楼 学习了，最近也在学习这个。
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