Rails 3 / Setting Custom Environment Variables

Question

I am trying to create a rails application that assigns one value to a variable when the environment is the development environment, and another value to that same variable w

Answer 1

You can do this with initializers.

# config/initializers/configuration.rb
class Configuration
  class << self
    attr_accessor :json_url
  end
end

# config/environments/development.rb
#  Put this inside the ______::Application.configure do block
config.after_initialize do
  Configuration.json_url = 'http://test.domain.com'
end

# config/environments/production.rb
#  Put this inside the ______::Application.configure do block
config.after_initialize do
  Configuration.json_url = 'http://www.domain.com'
end

Then in your application, call the variable Configuration.json_url

# app/controller/listings_controller.rb
def grab_json
  json_path = "#{Configuration.json_url}/path/to/json"
end

When you're running in development mode, this will hit the http://test.domain.com URL.

When you're running in production mode, this will hit the http://www.domain.com URL.