fix bug crawling

Gemfile

@@ -8,6 +8,7 @@ gem 'rails', '~> 6.1.3', '>= 6.1.3.2'
 gem 'bootstrap', '~> 5.0.1'
 gem 'nokogiri', '~> 1.11', '>= 1.11.7'
 
+
 # Use sqlite3 as the database for Active Record
 gem 'mysql2', '~> 0.5.3'
 # Use Puma as the app server
@@ -30,6 +31,7 @@ gem 'jbuilder', '~> 2.7'
 
 # Reduces boot times through caching; required in config/boot.rb
 gem 'bootsnap', '>= 1.4.4', require: false
+gem 'whenever', require: false
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console

Gemfile.lock

@@ -82,6 +82,7 @@ GEM
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
     childprocess (3.0.0)
+    chronic (0.10.2)
     concurrent-ruby (1.1.9)
     crass (1.0.6)
     erubi (1.10.0)
@@ -91,7 +92,6 @@ GEM
       activesupport (>= 4.2.0)
     i18n (1.8.10)
       concurrent-ruby (~> 1.0)
-    io-wait (0.1.0)
     jbuilder (2.11.2)
       activesupport (>= 5.0.0)
     listen (3.5.1)
@@ -108,12 +108,6 @@ GEM
     minitest (5.14.4)
     msgpack (1.4.2)
     mysql2 (0.5.3)
-    net-http (0.1.1)
-      net-protocol
-      uri
-    net-protocol (0.1.1)
-      io-wait
-      timeout
     nio4r (2.5.7)
     nokogiri (1.11.7-x86_64-linux)
       racc (~> 1.4)
@@ -185,13 +179,11 @@ GEM
       sprockets (>= 3.0.0)
     thor (1.1.0)
     tilt (2.0.10)
-    timeout (0.1.1)
     turbolinks (5.2.1)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
     tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
-    uri (0.10.1)
     web-console (4.1.0)
       actionview (>= 6.0.0)
       activemodel (>= 6.0.0)
@@ -209,6 +201,8 @@ GEM
     websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
+    whenever (1.0.0)
+      chronic (>= 0.6.3)
     xpath (3.2.0)
       nokogiri (~> 1.8)
     zeitwerk (2.4.2)
@@ -224,7 +218,6 @@ DEPENDENCIES
   jbuilder (~> 2.7)
   listen (~> 3.3)
   mysql2 (~> 0.5.3)
-  net-http
   nokogiri (~> 1.11, >= 1.11.7)
   puma (~> 5.0)
   rack-mini-profiler (~> 2.0)
@@ -237,6 +230,7 @@ DEPENDENCIES
   web-console (>= 4.1.0)
   webdrivers
   webpacker (~> 5.0)
+  whenever
 
 RUBY VERSION
    ruby 3.0.1p64

config/schedule.rb

+every 1.day, at: '08:18 am' do
+  rake 'crawler:all'
+end

db/migrate/20210720145646_change_jobs.rb

 class ChangeJobs < ActiveRecord::Migration[6.1]
   def up
     change_column :jobs, :salary, :string
-    remove_column :jobs, :industries_type, :text
-    remove_column :jobs, :location, :text
   end
 
   def down
     change_column :jobs, :salary, :integer
-    change_column :jobs, :industries_type, :text
-    change_column :jobs, :location, :text
   end
 end

lib/tasks/crawler.rake

 require 'open-uri'
+require 'logger'
 
 namespace :crawler do
   desc 'Crawl Jobs and Companies'
@@ -19,20 +20,23 @@ namespace :crawler do
       pagination_job_listing.each do |detail_jobs|
         company_url = detail_jobs.css('a.company-name').attribute('href').text
         next if company_url == 'javascript:void(0);'
+
         slug_company = CGI.escape(company_url.gsub('https://careerbuilder.vn/vi/nha-tuyen-dung/', '').strip)
         company_page = "https://careerbuilder.vn/vi/nha-tuyen-dung/#{slug_company}"
-        puts company_page
-        parse_company_page = Nokogiri::HTML(URI.open(company_page))
+        parse_company_page = Nokogiri::HTML(URI.open(company_page).read)
         company = parse_company_page.css('div.container')
         company_name = company.css('div.company-info div.content p.name')
         next if company_name.nil?
-        name = company.css('div.company-info div.content p.name').text
+
+        logger = Logger.new("#{Rails.root}/log/crawler_jobs.log")
+        logger.info("Link company: #{company_page}.to_s")
         company_info = company.css('div.company-info div.content')
         address = company_info.css('p')[1].try(:text)
         description = company_info.css('ul li').text
         overview = company.css('div.row div.content p').text.squish.strip
+
         Company.find_or_create_by(
-          name: name,
+          name: company_name.text,
           address: address,
           description: description,
           overview: overview
@@ -41,27 +45,28 @@ namespace :crawler do
         slug_job = CGI.escape(detail_jobs.css('a.job_link').attribute('href').text
         .gsub('https://careerbuilder.vn/vi/tim-viec-lam/', '').strip)
         job_detail_page = "https://careerbuilder.vn/vi/tim-viec-lam/#{slug_job}"
-        puts job_detail_page
-        parse_job_detail_page = Nokogiri::HTML(URI.open(job_detail_page))
+        parse_job_detail_page = Nokogiri::HTML(URI.open(job_detail_page).read)
         detail_job = parse_job_detail_page.css('div.container')
         title = detail_job.css('div.job-desc h1.title')
         next if title.nil?
-        title_job = detail_job.css('div.job-desc h1.title').text
+
+        logger.info("Link job: #{job_detail_page}")
         salary, experience, type, level, expired_at = ''
-        detail_content = detail_job.css('div.detail-box.has-background ul li')
+        detail_content = detail_job.css('div.col-lg-4 col-sm-6 item-blue ul li')
         detail_content.each do |content|
           case content.css('strong').text
           when 'Lương'
             salary = content.css('p').text
           when 'Kinh nghiệm'
-            experience = content.css('p').text
+            puts content.css('p').text
           when 'Hình thức'
-            type = content.css('p').text
+            puts content.css('p').text
           when 'Cấp bậc'
             level = content.css('p').text
           when 'Hết hạn nộp'
             expired_at = content.css('p').text
           end
+
         end
         benefits, overview, requirement, other_requirement = ''
         detail_require = detail_job.css('div.detail-row')
@@ -79,7 +84,7 @@ namespace :crawler do
         end
 
         job = Job.find_or_create_by(
-          title: title_job,
+          title: title.text,
           salary: salary,
           experience: experience,
           type: type,
@@ -89,25 +94,25 @@ namespace :crawler do
           overview: overview,
           requirement: requirement,
           other_requirement: other_requirement,
-          company_id: Company.find_by(name: name).id
+          company_id: Company.find_by(name: company_name.text).id
         )
 
         industries = detail_job.css('div.detail-box.has-background ul li p a')
         industries.each do |industry|
-        industry_name = industry.text.squish
-        industries = Industry.find_or_create_by(
-          name: industry_name
+          name = industry.text.squish
+          industry_name = Industry.find_or_create_by(
+            name: name
           )
-        job.industries << industries
+          job.industries << industry_name
         end
 
         location = detail_job.css('div.map p a')
         location.each do |city|
-          city_name = city.text
-          cities = City.find_or_create_by(
-            name: city_name
+          name = city.text
+          city_name = City.find_or_create_by(
+            name: name
           )
-          job.cities << cities
+          job.cities << city_name
         end
       end
       page += 1
@@ -156,9 +161,12 @@ namespace :crawler do
     end
   end
 
+  desc 'Craw regions, cities, industries, jobs and companies'
+  task all: %i[regions cities industries jobs]
+
   def parse_base_url
     base_url = Nokogiri::HTML(URI.open('https://careerbuilder.vn/'))
-    industries_url = base_url.css('div.menu div.dropdown-menu ul li a')[1].attributes['href'].value
+    industries_url = base_url.css('div.menu div.dropdown-menu ul li a')[1].attributes['href'].text
     Nokogiri::HTML(URI.open(industries_url))
   end
 end