flask系列六之模型分文件

from flask import Flask
from models import Article
from exts import db

app = Flask(__name__)
db.init_app(app) # 这个就是专为解决循环引用而出现的方法

db.create_all() # 创建数据表

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


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

from exts import db

class Article(db.Model):
    __tablename = 'article'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    title = db.Column(db.String(100), nullable=Flase)

from flask_sqlalchemy import SQLAlchemy

db = SQLAlchemy()