简介
结构
$ tree -I "__pycache*|*.pyc" -FCL 3
.
|-- database.db
|-- models.py
|-- templates/
| |-- home.html
| |-- list.html
| |-- result.html
| `-- students.html
`-- views.py
展示
1. 主页
2. 学生信息查看
3. 添加学生信息
技术
- Flask – SQLite的使用
- flask中表单数据的传递
运行
python .views.py
代码
创建数据库表单
# crdb.py
import sqlite3
conn = sqlite3.connect('database.db')
print "Opened database successfully";
conn.execute('CREATE TABLE students (name TEXT, addr TEXT, city TEXT, pin TEXT)')
print "Table created successfully";
conn.close()
views视图
from flask import Flask, render_template, request
import sqlite3 as sql
app = Flask(__name__)
@app.route('/')
def home():
return render_template('home.html')
@app.route('/enternew')
def new_student():
return render_template('students.html')
@app.route('/addrec', methods=['POST', 'GET'])
def addrec():
"""添加成员"""
if request.method == 'POST':
try:
nm = request.form['nm']
addr = request.form['add']
city = request.form['city']
pin = request.form['pin']
with sql.connect("database.db") as con:
cur = con.cursor()
cur.execute(
"INSERT INTO students(name, addr, city, pin) VALUES(?, ?, ?, ?)", (nm, addr, city, pin))
con.commit()
msg = "添加成功"
except:
con.rollback()
msg = "添加失败"
finally:
return render_template("result.html", msg=msg)
con.close()
@app.route('/list')
def list():
"""查询"""
con = sql.connect("database.db")
con.row_factory = sql.Row
cur = con.cursor()
cur.execute("select * from students")
rows = cur.fetchall()
return render_template("list.html", rows=rows)
if __name__ == '__main__':
app.run(debug=True)
models模块
import sqlite3 as lite
class Database():
def __init__(self, db='database.db'):
self.con = lite.connect(db, check_same_thread=False)
self.cur = self.con.cursor()
def create_students(self):
"""创建表单"""
with self.con:
sql = """create table students(
id integer primary key autoincrement,
name TEXT not null,
addr TEXT not null,
city TEXT,
pin TEXT)"""
self.cur.execute("DROP TABLE IF EXISTS students")
self.cur.execute(sql)
def insert_students(self, name, addr, city, pin):
"""插入用户信息"""
with self.con:
sql = "INSERT INTO students(name, addr, city, pin) VALUES(?, ?, ?, ?)"
self.cur.execute(sql, (name, addr, city, pin))
if __name__ == '__main__':
db = Database('database.db')
db.create_students()
home主页
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>主页</title>
</head>
<body>
<h1><a href = "/list">查看学生信息</a></h1>
<br>
<h1><a href = "/enternew">添加学生信息</a></h1>
</body>
</html>
list列表页
<!doctype html>
<html>
<body>
<h1>学生表</h1>
<hr>
<table border = 1>
<thead>
<td>姓名</td>
<td>地址</td>
<td>城市</td>
<td>区号</td>
</thead>
{% for row in rows %}
<tr>
<td>{{row["name"]}}</td>
<td>{{row["addr"]}}</td>
<td> {{ row["city"]}}</td>
<td>{{row['pin']}}</td>
</tr>
{% endfor %}
</table>
<br>
<a href = "/">返回主页</a>
</body>
</html>
result消息结果页
<!doctype html>
<html>
<body>
<h3>添加结果 : {{ msg }}</h3><br>
<h2><a href = "">返回主页</a></h2>
</body>
</html>
studentst添加成员
<html>
<body>
<form action = "{{ url_for('addrec') }}" method = "POST">
<h3>学生信息</h3>
姓名<br>
<input type = "text" name = "nm" /></br><br>
地址<br>
<textarea name = "add" ></textarea><br><br>
城市<br>
<input type = "text" name = "city" /><br><br>
区号<br>
<input type = "text" name = "pin" /><br><br>
<input type = "submit" value = "输入" /><br>
</form>
</body>
</html>