使用Rails 2启动Rails 3服务器

Question

I have a Rails 3 project, and I have a computer with Rails 2 installed. Is there any way for me to start the server on that computer? I cannot update the computer to Rails 3 for various reasons.

Answer 1

You don't need to 'update the computer to rails 3', you can install multiple versions of rails concurrently and define which versions to use in each project.

• In Rails 2 projects the rails version is defined by RAILS_GEM_VERSION in environment.rb
• In Rails 3 projects the rails version is defined by gem 'rails', '3.x.x' in the gemfile

If you also need multiple ruby versions:

• If on linux have a look at RVM
• if on windows have a look at pik