Rack::When

Shortcut handler for performing tasks in specific environments. Specific environments can be set to run specific sections of code. I wrote this to handle rack-middleware and as such it works in a config.ru but you could use it to run anything.

The order of precedence for env is ENV['RACK_ENV'] or ENV['RAILS_ENV'] but it defaults to development.

In your config.ru do

Rack::When.development do
  # Things you want done in development
  use DevelopmentMiddleware
end

Rack::When.production do
  # Things you want done in production
  use ProductionMetricMaker
end

run MyApplication

You can also specify the enviroment directly if you would prefer:

Rack::When.environments :custom_env do
  # My custom env code
end

and with multiple environments:

Rack::When.environments :custom_env, :another_custom_env do
  # My custom env code
end

Add this line to your application's Gemfile:

gem 'rack-when'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rack-when

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request