fb_public.rb

# require_relative "hget"

# client = FBPublic.new("penaltybr")
# client.data # returns the Graph API public data
# if you need see response details use:
# client.response # returns a Net::HTTPFound instance

# if you need an alias to get the api response use:
# fb_data = FBPublic.get_data("penaltybr") # returns the Graph API public data

require 'json'

class FBPublic
  attr_reader :path

  def self.get_data(path)
    client = self.new(path)
    client.data
  end

  def initialize(path)
    @path = path
  end

  def response
    @response ||= client.response
  end

  def data
    @data ||= JSON.parse(response.body)
  end

  def client
    @client ||= HGet.new(api_url)
  end

  def api_url
    @api_url ||= "http://graph.facebook.com/#{path}"
  end
end

hget.rb

# "http://graph.facebook.com/penaltybr"
# client = HGet.new("http://graph.facebook.com/penaltybr")
# client.response # returns a Net::HTTPFound instance

require "net/http"
require "uri"

class HGet
  attr_reader :url

  def initialize(url)
    @url = url
  end

  def uri
    @uri ||= URI.parse(@url)
  end 

  def response
    @response ||= http.request(Net::HTTP::Get.new(uri.request_uri))
  end

  def http
    @http ||= Net::HTTP.new(uri.host, uri.port)
  end
end