# -*- 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)