通过用户模型,对数据库进行增删改查操作。
增加:
user =
db.session.add(user)
db.session.commit()
查询:
User.query.filter(User.username == 'mis1114').first()
修改:
user.password = '111111'
db.session.commit()
删除:
db.session.delete(user)
db.session.commit()
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
import config
app = Flask(__name__)
app.config.from_object(config)
db = SQLAlchemy(app)
class User(db.Model):
__tablename__ = 'user'
id = db.Column(db.Integer,primary_key=True,autoincrement=True)
username = db.Column(db.String(20),nullable=False)
password = db.Column(db.String(20),nullable=False)
#db.create_all()
user=User(username='yyyy1',password='111111')
db.session.add(user)
db.session.commit()
user = User.query.filter(User.username == 'yyyy1').first()
user=User.query.filter(User.username=='yyyy1').first()
user.password='234567'
print(user.username,user.password)
db.session.commit()
user=User.query.filter(User.username == 'yyyy1').first()
db.session.delete(user)
db.session.commit()
@app.route('/')
def hello_world():
return 'Hello World!'
if __name__ == '__main__':
app.run()
查找:
删除: