Rails 2 -- Load Gems based on the environment

Like rails 3, do we have a functionality of loading specific gems according to the application environment.

rails 3 example

group :production do
  gem "activemerchant"
end

do we have anything similar to th开发者_开发问答e above code in rails2

Thanks in Advance.

Define the gems in the appropriate environment files.

So instead of having them all defined in environment.rb, define the ones you want in development.rb and production.rb etc.

# development.rb
config.gem 'sqlite3'

# production.rb
config.gem 'mysql'

if you don't want to use different files for different environments then you can use:

if Rails.env.production?
   config.gem 'activemerchant'
end