# -*- coding: utf-8 -*-
from sqlalchemy import Column, String, create_engine,ForeignKey,Text,Integer,Table
from sqlalchemy.orm import sessionmaker,relationship
from sqlalchemy.ext.declarative import declarative_base
# 创建对象的基类:
Base = declarative_base()
# 初始化数据库连接:
engine = create_engine('mysql+pymysql://root:root@localhost:3306/test')
# # 创建DBSession类型:
# DBSession = sessionmaker(bind=engine)
# Table(
# 'mapping',
# Base.metadata,
# Column('id',Integer,autoincrement=True,primary_key=True),
# Column('recipe_id',Integer,ForeignKey('recipe.id')),
# Column('ingredient_id',Integer,ForeignKey('ingredient.id'))
# )
arctire_tag = Table(
"arctire_tag",
Base.metadata,
Column('arctire_id',Integer,ForeignKey('arctire.id'),primary_key=True),
Column("tag_id",Integer , ForeignKey("tag.id"),primary_key=True),
)
class Arctire(Base):
__tablename__ = "arctire"
id = Column(Integer , primary_key=True , autoincrement=True)
name = Column(String(50) , nullable=False)
tags = relationship("Tag", backref="arctires", secondary='arctire_tag')
def __repr__(self):
return "name:%s"%self.name
class Tag(Base):
__tablename__ = 'tag'
id = Column(Integer , primary_key=True , autoincrement=True)
tag = Column(String(50) , nullable=False)
def __repr__(self):
return "tag:%s"%self.tag
Base.metadata.create_all(engine)
# -*- coding: utf-8 -*-
from sqlalchemy import Column, String, create_engine,ForeignKey,Text,Integer,Table
from sqlalchemy.orm import sessionmaker,relationship
from sqlalchemy.ext.declarative import declarative_base
# 创建对象的基类:
Base = declarative_base()
# 初始化数据库连接:
engine = create_engine('mysql+pymysql://root:root@localhost:3306/test')
# # 创建DBSession类型:
# DBSession = sessionmaker(bind=engine)
# arctire_tag = Table(
# "arctire_tag",
# Base.metadata,
# Column('arctire_id',Integer,ForeignKey('arctire.id'),primary_key=True),
# Column("tag_id",Integer , ForeignKey("tag.id"),primary_key=True),
# )
class Arctire_tag(Base):
__tablename__='arctire_tag'
arctire_id=Column(Integer,ForeignKey('arctire.id'),primary_key=True)
tag_id=Column(Integer,ForeignKey('tag.id'),primary_key=True)
class Arctire(Base):
__tablename__ = "arctire"
id = Column(Integer , primary_key=True , autoincrement=True)
name = Column(String(50) , nullable=False)
tags = relationship("Tag", backref="arctires", secondary='arctire_tag')
def __repr__(self):
return "name:%s"%self.name
class Tag(Base):
__tablename__ = 'tag'
id = Column(Integer , primary_key=True , autoincrement=True)
tag = Column(String(50) , nullable=False)
def __repr__(self):
return "tag:%s"%self.tag
Base.metadata.create_all(engine)
