1.代码:
#encoding:utf-8
from flask_sqlalchemy import SQLAlchemy
from flask_script import Manager,Shell
from flask_migrate import Migrate,MigrateCommand
from flask import Flask
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI']='mysql+pymysql://root:005@127.0.0.1:3306/data'
app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN']=True
app.config['SQLALCHEMY_TRACK_MODIFICATIONS']=False
app.config['JSON_AS_ASCII']=False
db = SQLAlchemy(app)
migrate = Migrate(app,db)
manager = Manager(app)
manager.add_command('db',MigrateCommand)
Student_Teacher=db.Table(
'Student_Teacher',
db.Column('tea_id',db.Integer,db.ForeignKey('tea.id'),primary_key=True),
db.Column('stu_id',db.Integer,db.ForeignKey('stu.id'),primary_key=True)
)
class Student(db.Model):
__tablename__='stu'
id=db.Column(db.Integer,primary_key=True,autoincrement=True)
name=db.Column(db.String(20),nullable=False)
class Teacher(db.Model):
__tablename__='tea'
id=db.Column(db.Integer,primary_key=True,autoincrement=True)
name=db.Column(db.String(20),nullable=False)
students=db.relationship('Student',secondary=Student_Teacher,backref=db.backref('mytea'))
def make_shell_context():
return dict(app=app,db=db,Student=Student,Teacher=Teacher)
manager.add_command('shell',Shell(make_context=make_shell_context))
if __name__=='__main__':
manager.run()
2.效果:
