Skeleton rake task for scrapping website with nokogiri

ScrapRb.rb

require 'open-uri'
require 'nokogiri'
require 'securerandom'

namespace :Scrap do
  desc "code structure for new scrapper"
  task :sample => :environment do
      src = "" # define the source of the article
      url_to_scrap = "" # define the url where scrap the article can be the same as src

      stream = open(url_to_scrap) # get the stream of the url
      html = stream.read() # get html code of the stream
      noko_html = Nokogiri::HTML(html) # get the nokogiri object of html
      articles_html = nil # list of the article find by nokogiri
      articles = [] # List of all the article object Model

      # Replace by the block to select the articles html list

      # iterate on all the articles
      articles_html.each { |article|

          # Replace nil by the css selector
          img = nil
          url = nil
          title = nil
          desc = nil
          #Set the object data
          data = {url:url,
            src:src,
            img:img,
            title:title,
            description:desc,
            twitted:false,
            uuid:SecureRandom.hex(10)
          }
          articles.push(data)
      }
      count = SaveArticle(articles)
      #finally save the history with how many article added
      history = History.create(action:"SCRAP" , src:url_to_scrap , count:count)
      history.save
  end
end