flask之数据模型flask-sqlalchemy

一、安装数据库连接依赖包

pip install flask-sqlalchemy
pip install pymysql

 

二、项目配置

app/__init__.py

from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__) #生成flask对象
app.config["SQLALCHEMY_DATABASE_URI"]="mysql+pymysql://dbuser:password@127.0.0.1:3306/dbname"
app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = True
db = SQLAlchemy(app)

 

三、创建表

app/models.py 

 

from app import db
class User(db.Model):
    __tablename__ = "user"
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100), unique=True)
    pwd = db.Column(db.String(100))
    email = db.Column(db.String(32), unique=True)
    phone = db.Column(db.String(11), unique=True)
    info = db.Column(db.Text)
    face = db.Column(db.String(255), unique=True)
    addtime = db.Column(db.DateTime, index=True, default=datetime.now)
    uuid = db.Column(db.String(255), unique=True)
    # 会员日志外键关系
    userlogs = db.relationship('Userlog', backref='user')  
    comments = db.relationship('Comment', backref='user')  
    moviecols = db.relationship('Moviecol', backref='user')  # 收藏外键关系
    def __repr__(self):
        return "<User %r>" % self.name

生成数据库表

if __name__=="__main__":
    db.create_all()

 

四、常用数据类型

#整形
 id = db.Column(db.Integer, primary_key=True)

#小整形
is_super = db.Column(db.SmallInteger) 

#字符串
name = db.Column(db.String(100), unique=True)

#文本
info = db.Column(db.Text)

#时间and添加索引index
addtime = db.Column(db.DateTime, index=True, default=datetime.now)

#外键关联
class Userlog(db.Model):
    __tablename__ = "userlog"
    user_id =     
    db.Column(db.Integer,db.ForeignKey('user.id'))

class User(db.Model):
    __tablename__ = "user"
    # 会员日志外键关系
    userlogs = db.relationship('Userlog', backref='user')