Ruby Ramallah - Day II

Gemfile

source "https://rubygems.org/"

gem 'sinatra'
gem 'nokogiri'

server.rb

ENV['RACK_ENV'] ||= 'development'
require 'bundler/setup'
Bundler.require :default, ENV['RACK_ENV']

require './web_page'

get "/" do
  page_title = WebPage.new(params[:url]).title

  "The title page for: #{params[:url]} is <b>#{page_title}</b>"
end

webpage.rb

require 'open-uri'

class WebPage
  def initialize(url)
    @page = Nokogiri::HTML(open(url))
  end

  def title
    @page.title
  end
end

First install Bundler by:

gem install bundler

Then run

bundle install

Every time you modify Gemfile make sure to run bundle or bundle install