I was not using declarative_base before. I used the normal method first
encountered in the SQLAlchemy book. I tried the example in the book and
applied to my problem and it worked.
This is the first time, I am trying out with declarative base.
I will now look into your script.
On Tue, Nov 4, 200
also, I wonder how the way you were doing it before, with composite,
was actually working out ? It wasn't intended to hold "half" of a
primary key like that which is probably why I warned against it, but
if its working for you, there's no reason not to use it.
I.e. with declarative just pu
attached is a script illustrating the usage of comparable_property, in roughly the same way you were using composite earlier.from sqlalchemy import *
from sqlalchemy.orm import *
from sqlalchemy.orm.interfaces import PropComparator
from sqlalchemy.ext.declarative import declarative_base
engine = c
Unfortunately, it still gives me an error.
http://paste.pocoo.org/show/90191
Did I miss something?
PS: I added the __get__ method just for the fun of it, I have no idea what
it does. Looking at the docs:
http://www.sqlalchemy.org/docs/04/sqlalchemy_orm_interfaces.html#docstrings_sqlalchemy.orm.i
theres a "bug" in that the error message is misleading, but in fact a
composite property owns the columns within it which cannot be mapped
separately, so to make that "work" you'd need to say:
class User(Base):
__tablename__ = 'user'
house_address_id = Column('house_address', Int
