Originally posted by Lasse Koskela: I haven't done that myself so I might be talking crap, but the above link seems to suggest that you need to write new glue code to replace AR with Og rather than change your application code.
Or, of course, you could just change your application code to use Og's API rather than ActiveRecord.
Originally posted by Pradip Bhat: Thanks. How does one chose between ActiveRecord and Og.
You don't choose. You just start using ActiveRecord as it is the standard.
Seriously, the number of people using Og must be several magnitudes smaller than those using ActiveRecord so you better have a real good reason to choose Og. Community matters. It's slightly different if you're a seasoned Ruby hacker, prefer Og, and are willing to jump inside the framework yourself to figure out what you're doing wrong.
(Disclaimer: remember that I still haven't actually used Og myself so I'm talking about my perceptions here)