Python菜鸟在这里,
目前我正在使用 SQLAlchemy,我有这个:
from __init__ import Base
from sqlalchemy.schema import Column, ForeignKey
from sqlalchemy.types import Integer, String
from sqlalchemy.orm import relationship
class User(Base):
__tablename__ = "users"
id = Column(Integer, primary_key=True)
username = Column(String, unique=True)
email = Column(String)
password = Column(String)
salt = Column(String)
openids = relationship("OpenID", backref="users")
User.__table__.create(checkfirst=True)
#snip definition of OpenID class
def create(**kwargs):
user = User()
if "username" in kwargs.keys():
user.username = kwargs['username']
if "email" in kwargs.keys():
user.username = kwargs['email']
if "password" in kwargs.keys():
user.password = kwargs['password']
return user
这是 in /db/users.py
,所以它会像这样使用:
from db import users
new_user = users.create(username="Carson", password="1234")
new_user.email = "email@address.com"
users.add(new_user) #this function obviously not defined yet
但是其中的代码create()
有点愚蠢,我想知道是否有更好的方法来做到这一点,它不需要 if 梯子,如果添加了任何不在 User 对象中的键,那将失败。像:
for attribute in kwargs.keys():
if attribute in User:
setattr(user, attribute, kwargs[attribute])
else:
raise Exception("blah")
这样我就可以把它放在它自己的函数中(除非希望已经存在?)所以我不必一次又一次地做 if 梯子,所以我可以在不修改此代码的情况下更改表结构。
有什么建议么?