sqlalchemy使用记录

1.models.py中添加该方法，可通过该方法转dict

def to_dict(self):
    return {c.name: getattr(self, c.name, None) for c in self.__table__.columns}

Base.to_dict = to_dict

class User(Base):
    __tablename__ = 'key_user'

    id = Column(INTEGER(11), primary_key=True, nullable=False, index=True)
    uid = Column(String(32), primary_key=True, nullable=False)
    username = Column(String(255), primary_key=True, nullable=False, index=True)
    remarks = Column(String(255))
    creater = Column(String(255))
    create_time = Column(TIMESTAMP)

2.查询（入参没有的情况）、分页、排序
　　
if username:

　　q = self.dbsession.query(KeyUser).filter(User.username == username)
if passwd:

　　q = q.filter(User.passwd== passwd)
q.limit(pageSize).offset(int(page-1)*pageSize).order_by(User.id.desc()).all()