Rails 2 — 根据环境加载 Gem

Question

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 the above code in rails2

Thanks in Advance.

Answer 1

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'

Answer 2

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

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