sor tutorial - tableX - blocks

class AppServer
  
  class AppServerConfig
    attr_accessor :port, :admin_password
  end
  
  attr_accessor :config
  
  def initialize
    @config = AppServerConfig.new
  end
  
end


class Configuration
  
  attr_accessor :tail_logs, :max_connections, :admin_password, :app_server
  
  def initialize
    @app_server = AppServer.new
    yield self
  end
  
  def app_server
    if block_given?
      yield @app_server.config
    else
      @app_server.config
    end
  end
  
end

def configure(&block)
  Configuration.new(&block)
end


# --------------------

configuration = configure do |config|
  config.tail_logs = true
  config.max_connections = 55
  config.admin_password = 'secret'
  config.app_server do |app_server_config|
    app_server_config.port = 8808
    app_server_config.admin_password = config.admin_password
  end
end

p configuration.class # => Configuration
p configuration.tail_logs # => true
p configuration.app_server.admin_password # => 'secret'