How can I run a Rails 1.2.5 application on ruby 1.9?

Question

I have a old app made on rails 1.2.5, this application have alot of access per day.

I intend to upgrade my server (a joyent accelerator) to run ruby 1.9.x and work with rails 3 but I can't stop or move this app to another server.

Have any way to run this application on ruby 1.9? or run two ruby versions (1.8.7 and 1.9) at the same time? or on the last case upgrade my app to work with rails 3?

Thanks.

Answer 1

There was quite a few patches to Rails to make it run under Ruby 1.9. I think you are up for a challenge if you try to do that. With Ruby Version Manager you can work with multiple ruby environments from interpreters to sets of gems.