[sqlalchemy] Re: Is there a way to replace object in DB? - Michael Bayer - com.googlegroups.sqlalchemy

15 messages in com.googlegroups.sqlalchemy[sqlalchemy] Re: Is there a way to re...

From	Sent On	Attachments
Denis S. Otkidach	26 Dec 2007 09:12
Michael Bayer	26 Dec 2007 11:38
Denis S. Otkidach	27 Dec 2007 01:11
Michael Bayer	27 Dec 2007 13:58
Rick Morrison	27 Dec 2007 13:59
braydon fuller	27 Dec 2007 15:01
Rick Morrison	27 Dec 2007 15:06
Denis S. Otkidach	28 Dec 2007 02:49
Michael Bayer	28 Dec 2007 07:25
Denis S. Otkidach	11 Jan 2008 09:30
Michael Bayer	11 Jan 2008 09:41
Denis S. Otkidach	15 Jan 2008 05:20
Michael Bayer	15 Jan 2008 07:54
Denis S. Otkidach	16 Jan 2008 01:43
Michael Bayer	16 Jan 2008 08:41

Subject:	[sqlalchemy] Re: Is there a way to replace object in DB?
From:	Michael Bayer (mike...@zzzcomputing.com)
Date:	12/28/2007 07:25:34 AM
List:	com.googlegroups.sqlalchemy

On Dec 28, 2007, at 5:50 AM, Denis S. Otkidach wrote:

Sure, I can get an object from DB and copy data from new one. But there is a lot of object types, so have to invent yet another meta description for it (while it already exists in sqlalchemy). And requirements changes often, so I have to change scheme in 2 places. This is not good and error prone. Why I have to invent new description when there is already one from sqlalchemy mapping? Can't I use it for my purpose? Something like merge(objFromDB, newObj) will solve the problem.

session.merge() does copy the attributes of one object into another. theres some bugs with dont_load that have been fixed in trunk so try out the trunk if you have problems.