flask_sqlalchemy的使用

Posted 2021-01-15

• 第一配置文件

# coding:utf-8
DIALECT = ‘mysql‘
DRIVER = ‘pymysql‘
USERNAME = ‘root‘
PASSWORD = ‘123456‘
HOST = ‘127.0.0.1‘
PORT = ‘3306‘
DATABASE = ‘student‘

SQLALCHEMY_DATABASE_URI = ‘{}+{}://{}:{}@{}:{}/{}?charset=utf8‘.format(
    DIALECT, DRIVER, USERNAME, PASSWORD, HOST, PORT, DATABASE
)
SQLALCHEMY_COMMIT_ON_TEARDOWN = True
SQLALCHEMY_TRACK_MODIFICATIONS = True

• 链接数据库进行创建表

# coding:utf-8
from flask import Flask
from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__,template_folder=‘templates‘)
# [‘SQLALCHEMY_DATABASE_URL‘] = ‘mysql+mysqlconnector://root:[email protected]:3306/student‘‘‘
app.config.from_object(‘config‘)

db = SQLAlchemy(app)


class user_database(db.Model):
    id = db.Column(db.INT,primary_key=True)
    name = db.Column(db.String(255),unique=False)
    sex  = db.Column(db.String(10),unique=False)

    def __init__(self,id,name,sex):
        self.id = id
        self.name = name
        self.sex = sex

# 创建数据库
db.create_all()
db.session.commit()

# 实例化插入数据库

text_1 = user_database(1,‘八戒‘,‘男‘)

# db.session.add(user_database(2,‘猴哥‘,‘man‘))
# db.session.add(user_database(3,‘物镜‘,‘man‘))
# db.session.add(user_database(4,‘师父‘,‘man‘))
db.session.add(user_database(5,‘李大郎‘,‘man‘))
db.session.commit()