Flask – SQLite：增加成员

简介
代码

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

Flask – SQLite：增加成员-LMLPHP

2. 学生信息查看

Flask – SQLite：增加成员-LMLPHP

3. 添加学生信息

Flask – SQLite：增加成员-LMLPHP

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>