SQLAlchemy连接数据库并在django admin显示

SQLAlchemy 0.7     postgersql  9.0

SQLAlchemy连接数据库有两种方法，一种是classic，一种是modern

1，modern方法

from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, Integer, String
from sqlalchemy.orm import sessionmaker
from sqlalchemy import Sequence

#绑定数据库
engine = create_engine('postgres://postgres:1@localhost/fy', echo=False)
Base = declarative_base()

class User(Base):
    __tablename__ = 'users'
    id = Column(Integer, Sequence('user_id_seq'), primary_key=True)
    name = Column(String)
    fullname = Column(String)
    password = Column(String)
    
    def __init__(self, name, fullname, password):
        self.name = name
        self.fullname = fullname
        self.password = password
        
    def __repr__(self):
        return "<User('%s','%s', '%s')>" % (self.name, self.fullname, self.password)
    
    
Base.metadata.create_all(engine)

#session会话
Session = sessionmaker(bind=engine)
Session = sessionmaker()
Session.configure(bind=engine)
session = Session()

user_name = raw_input('name >')
user_fullname = raw_input('fullname >')
user_password = raw_input('password >')

ed_user = User(user_name, user_fullname, user_password)
session.add(ed_user)

#提交
session.commit() 
session.close()

2. classic方法 也可以用session方法增加数据

from sqlalchemy import Table, MetaData, Column, Integer, String
from sqlalchemy.orm import mapper
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, Integer, String
from sqlalchemy.orm import sessionmaker
from sqlalchemy import Sequence

engine = create_engine('postgres://postgres:1@localhost/fy', echo=False)
metadata = MetaData()
 
user = Table('users', metadata,
            Column('id', Integer, Sequence('user_id_seq'), primary_key=True),
            Column('name', String(50)),
            Column('fullname', String(50)),
            Column('password', String(12))
        ) 

metadata.create_all(engine, checkfirst=True)
conn = engine.connect()  

class User(object):
    def __init__(self, name, fullname, password):
        self.name = name
        self.fullname = fullname
        self.password = password 
     
mapper(User, user) 

user_name = raw_input('name >')
user_fullname = raw_input('fullname >')
user_password = raw_input('password >')

ed_user = user.insert(values=dict(name=user_name,fullname=user_fullname,password=user_password))
conn.execute(ed_user)
conn.close()

在django admin显示：

先创建一个app，然后按照django的教程弄出django管理（表名不是这个例子的）

只要SQLAlchemy创建的表和model.py的表名一样，就可以显示出来了。

model.py

from django.db import models

class User(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=20)
    fullname = models.CharField(max_length=20)
    password = models.CharField(max_length=20)
 
    def __unicode__(self):
        return self.name    

参考资料：

http://wangye.org/blog/archives/date/2012/10

 http://www.cnblogs.com/fangyu19900812/admin/EditPosts.aspx?opt=1    （这个要慢慢找）

http://docs.sqlalchemy.org/en/rel_0_7/     官方文档

http://www.blogjava.net/sean/archive/2009/01/26/252597.html