gggyt  
没谁离不开谁

  1.config.py——配置文件

DEBUG = True

DIALECT = 'mysql'
DRIVER = 'mysqldb'
USERNAME = 'root'
PASSWORD = ''
HOST = '127.0.0.1'
PORT = '3306'
DATABASE = 'db_demo1'

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

SQLALCHEMY_TRACK_MODIFICATIONS=True

  在这个文件里面是对配置一系列进行操作,比如数据库、debug之类的

  2.models.py  

#encoding: utf-8

from exts import db

class Xixi(db.Model):
    __tablename__ = 'xixi'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    title = db.Column(db.String(100), nullable=False)
    content = db.Column(db.String(100), nullable=False)
    tags = db.Column(db.String(100), nullable=False)
    ll = db.Column(db.String(100), nullable=False)

  在这个py文件中,我们通过这个py文件中的类创建数据库

  3.exts.py

#encoding: utf-8

from flask_sqlalchemy import SQLAlchemy

db = SQLAlchemy()

  是因为文件和文件之间会产生循环引用,通过这个文件可以消除循环引用

  4.manage.py

#encoding: utf-8

from flask_script import Manager
from demo_model import app
from flask_migrate import Migrate, MigrateCommand
from exts import db
from models import Xixi

manager = Manager(app)
#绑定app和db
migrate = Migrate(app, db)
#添加迁移脚本的命令到manager中
manager.add_command('db', MigrateCommand)

if __name__ == '__main__':
    manager.run()

  5.XXX.py

#encoding:utf-8
from flask import Flask
from exts import db
from models import Xixi
import config
import pymysql
pymysql.install_as_MySQLdb()

app = Flask(__name__)
app.config.from_object(config)
db.init_app(app)    #app文件是个堆栈,我们手动加进里面,不然无法运行

# with app.app_context():   #联系上下文,创建数据库
#     db.create_all()

@app.route('/')
def hello_world():
    return 'Hello World!'


if __name__ == '__main__':
    app.run()

 

posted on 2018-03-06 18:51  gggyt  阅读(1927)  评论(0编辑  收藏  举报