Merge branch 'features/crawl_data' into 'master'

implement crawler data from careerbuild

See merge request !2

app/assets/javascripts/application.js

@@ -11,5 +11,4 @@
 // about supported directives.
 //
 //= require rails-ujs
-//= require turbolinks
 //= require_tree .

app/data/crawler.rb

+# encoding: UTF-8
+require 'nokogiri'
+require 'uri'
+require 'open-uri'
+
+class Crawler
+  BASE_CAREERBUILDER_URL = "https://careerbuilder.vn"
+  LIST_URL = "#{BASE_CAREERBUILDER_URL}/viec-lam"
+
+  def self.crawl_job_infomation(job_links)
+    job_details = []
+
+    job_links.each do |link|
+      puts "Fetching #{link}..."
+      params = {}
+      link = URI.escape(link)
+      doc = Nokogiri::HTML(open(link), nil, 'utf-8')
+
+      if doc.css('#template_vantai, #template_1,
+                  #template_2, #template_3, #template_4,
+                  #template_5, #template_6, #template_7,
+                  #newyear_02').blank?
+
+        params = use_template_default(doc, link)
+        job_details << params
+      end
+    end
+
+    job_details
+  end
+
+  def self.use_template_default(doc, link)
+    params = {}
+    params_company = {}
+    description = []
+    # get job's name
+    params[:name] = doc.css('.top-job .top-job-info h1').text.strip
+    params[:updated_date] = doc.css('.datepost').text.split(':')[1].strip
+
+    # get company infoimation
+    params_company = crawl_company_infomation(doc)
+    params[:company_name] = params_company[:name]
+    params[:company_location] = params_company[:location]
+    params[:company_description] = params_company[:description]
+
+    # get employment information
+    doc.css('.MyJobLeft .box2Detail .DetailJobNew li').children.each do |child|
+      info = child.text.gsub(/\t|\n/, '').split(':')
+      next if info.blank?
+      case info[0].strip.upcase
+      when 'NƠI LÀM VIỆC'
+        params[:city] = info[1].strip
+      when 'CẤP BẬC'
+        params[:level] = info[1]
+      when 'KINH NGHIỆM'
+        params[:level] = info[1]
+      when 'LƯƠNG'
+        params[:salary] = info[1]
+      when 'NGÀNH NGHỀ'
+        params[:industry] = info[1]
+      when 'HẾT HẠN NỘP'
+        params[:expiry_date] = info[1]
+      end
+    end
+
+    # get job description
+    doc.css('.MarBot20').children.each do |child|
+      description << child.to_html
+    end
+    params[:description] = description.join("")
+
+    # original_link
+    params[:original_link] = link
+
+    params
+  end
+
+  def self.crawl_company_infomation(doc)
+    # get company information
+    params = {}
+    if doc.css('.box1Detail .TitleDetailNew span').length > 0
+      params[:name] = doc.css('.box1Detail .TitleDetailNew span').text
+      params[:location] = doc.at('.box1Detail .TitleDetailNew label').text
+      params[:description] = doc.css('.desc_company p').text
+    end
+    params[:name] ||= 'Bảo mật'
+
+    params
+  end
+
+  def self.get_job_links
+    url = "#{LIST_URL}/tat-ca-viec-lam-trang-#{1}-vi.html"
+    doc = Nokogiri::HTML(open(url))
+    doc.css('.gird_standard .brief .jobtitle .job a').map { |a| a['href'] }.compact.uniq
+  end
+end

app/models/city.rb

 class City < ApplicationRecord
-  belongs_to :country
-  has_many :companies
-  has_many :jobs
+  belongs_to :country, optional: true
+  has_and_belongs_to_many :companies
+  has_and_belongs_to_many :jobs
 end

app/models/company.rb

 class Company < ApplicationRecord
-  belongs_to :city
+  has_and_belongs_to_many :cities
   has_many :jobs
 end

app/models/job.rb

 class Job < ApplicationRecord
-  belongs_to :city
   belongs_to :company
   has_many :apply_jobs
   has_many :candidates, through: :apply_jobs, class_name: 'User', source: :user
   has_many :favorite_jobs
   has_many :people_who_liked, through: :favorite_jobs, class_name: 'User', source: :user
   has_and_belongs_to_many :industries
+  has_and_belongs_to_many :cities
+
+  def self.create_new_jobs(arr_jobs)
+    arr_jobs.each do |item|
+      city_names = []
+      job_industries = []
+      industry_names = []
+      job = Job.new(name:          item[:name],
+                    salary:        item[:salary],
+                    description:   item[:description],
+                    level:         item[:level],
+                    original_link: item[:original_link],
+                    experience:    item[:experience],
+                    expiry_date:   item[:expiry_date],
+                    updated_date:  item[:updated_date])
+      # City
+      unless item[:city].blank?
+        city_names = item[:city].split(',').map(&:strip)
+        job.cities << City.where(name: city_names)
+      end
+
+      # Company
+      company = Company.find_by(name: item[:company_name])
+      if company.nil?
+        company = Company.create(name: item[:company_name],
+                                 location: item[:company_location],
+                                 description: item[:company_description])
+      end
+      job.company = company
+
+      job.company.cities << (job.cities - job.company.cities)
+
+      # Industry
+      unless item[:industry].blank?
+        industry_names = item[:industry].split(',').map(&:strip)
+        job_industries = Industry.where(name: industry_names)
+        job.industries << job_industries
+
+        industry_names = industry_names - job_industries.pluck(:name)
+        industry_names.each do |name|
+          job.industries << Industry.create(name: name)
+        end
+      end
+      puts "Saving #{item[:name]} ......................................"
+
+      if job.save
+        puts "Job was successfully created"
+      else
+        puts "Error..."
+      end
+
+    end
+  end
+
+  def self.filter_link_exist(links)
+    return links - Job.where(original_link: links).pluck(:original_link)
+  end
 end

app/views/layouts/_navbar.html.erb

+<nav class="navbar navbar-default">
+  <div class="container-fluid">
+    <div class="navbar-header">
+      <a class="navbar-brand" href="#">WebSiteName</a>
+    </div>
+
+    <ul class="nav navbar-nav navbar-right">
+      <li><a href="#"><span class="glyphicon glyphicon-user"></span> Sign Up</a></li>
+      <li><a href="#"><span class="glyphicon glyphicon-log-in"></span> Login</a></li>
+    </ul>
+  </div>
+</nav>

config/routes.rb

 Rails.application.routes.draw do
   devise_for :users
-  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
 end

db/migrate/20171004094208_add_original_link_to_jobs.rb

+class AddOriginalLinkToJobs < ActiveRecord::Migration[5.1]
+  def change
+    add_column :jobs, :original_link, :string, index: true, uniqe: true
+  end
+end

db/migrate/20171005083330_remove_city_from_jobs.rb

+class RemoveCityFromJobs < ActiveRecord::Migration[5.1]
+  def change
+    remove_reference :jobs, :city
+  end
+end

db/migrate/20171005084200_create_join_table_jobs_cites.rb

+class CreateJoinTableJobsCites < ActiveRecord::Migration[5.1]
+  def change
+    create_table :cities_jobs do |t|
+      t.references :job, index: true
+      t.references :city, index: true
+    end
+  end
+end

db/migrate/20171005085357_remove_city_from_companies.rb

+class RemoveCityFromCompanies < ActiveRecord::Migration[5.1]
+  def change
+    remove_reference :companies, :city
+  end
+end

db/migrate/20171005085453_create_join_table_cities_companies.rb

+class CreateJoinTableCitiesCompanies < ActiveRecord::Migration[5.1]
+  def change
+    create_table :cities_companies, id: false do |t|
+      t.references :company, index: true
+      t.references :city, index: true
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20171002033456) do
+ActiveRecord::Schema.define(version: 20171005085453) do
 
   create_table "apply_jobs", force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
     t.bigint "job_id"
@@ -30,14 +30,26 @@ ActiveRecord::Schema.define(version: 20171002033456) do
     t.index ["country_id"], name: "index_cities_on_country_id"
   end
 
+  create_table "cities_companies", id: false, force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
+    t.bigint "city_id", null: false
+    t.bigint "company_id", null: false
+    t.index ["city_id", "company_id"], name: "index_cities_companies_on_city_id_and_company_id"
+    t.index ["company_id", "city_id"], name: "index_cities_companies_on_company_id_and_city_id"
+  end
+
+  create_table "cities_jobs", id: false, force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
+    t.bigint "job_id", null: false
+    t.bigint "city_id", null: false
+    t.index ["city_id", "job_id"], name: "index_cities_jobs_on_city_id_and_job_id"
+    t.index ["job_id", "city_id"], name: "index_cities_jobs_on_job_id_and_city_id"
+  end
+
   create_table "companies", force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
     t.string "name"
     t.string "location"
     t.text "description"
-    t.bigint "city_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.index ["city_id"], name: "index_companies_on_city_id"
   end
 
   create_table "countries", force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
@@ -76,13 +88,12 @@ ActiveRecord::Schema.define(version: 20171002033456) do
     t.text "description"
     t.string "level"
     t.string "experience"
-    t.bigint "city_id"
     t.bigint "company_id"
     t.datetime "expiry_date"
     t.datetime "updated_date"
     t.datetime "updated_at", null: false
     t.datetime "created_at", null: false
-    t.index ["city_id"], name: "index_jobs_on_city_id"
+    t.string "original_link"
     t.index ["company_id"], name: "index_jobs_on_company_id"
   end
 

db/seeds.rb

-# This file should contain all the record creation needed to seed the database with its default values.
-# The data can then be loaded with the rails db:seed command (or created alongside the database with db:setup).
-#
-# Examples:
-#
-#   movies = Movie.create([{ name: 'Star Wars' }, { name: 'Lord of the Rings' }])
-#   Character.create(name: 'Luke', movie: movies.first)
+viet_nam = Country.create(name: 'Viet Nam')
+another = Country.create(name: 'another')
+
+cities_of_vn = ["Hà Nội", "Hồ Chí Minh", "An Giang", "Bà Rịa - Vũng Tàu", "Bạc Liêu", "Bắc Giang",
+          "Bắc Ninh", "Bến Tre", "Bình Dương", "Bình Định", "Bình Phước", "Bình Thuận", "Cà Mau",
+          "Cao Bằng", "Cần Thơ", "Dak Lak", "Dak Nông", "Đà Nẵng", "Điện Biên",
+          "Đồng Bằng Sông Cửu Long", "Đồng Nai", "Đồng Tháp", "Gia Lai", "Hà Giang", "Hà Nam",
+          "Hà Tây", "Hà Tĩnh", "Hải Dương", "Hải Phòng", "Hậu Giang", "Hòa Bình", "Hưng Yên",
+          "Khác", "Khánh Hòa", "Kiên Giang", "Kon Tum", "KV Bắc Trung Bộ", "KV Đông Nam Bộ",
+          "KV Nam Trung Bộ", "KV Tây Nguyên", "Lai Châu", "Lạng Sơn", "Lào Cai", "Long An",
+          "Nam Định", "Nghệ An", "Ninh Thuận", "Phú Thọ", "Phú Yên", "Quảng Bình", "Quảng Nam",
+          "Quảng Ngãi", "Quảng Ninh", "Quảng Trị", "Sóc Trăng", "Sơn La", "Tây Ninh", "Thái Bình",
+          "Thái Nguyên", "Thanh Hóa", "Thừa Thiên- Huế", "Tiền Giang", "Toàn quốc", "Trà Vinh",
+          "Tuyên Quang", "Vĩnh Long", "Vĩnh Phúc", "Yên Bái"]
+cities_of_another_country = [
+                    "Banteay Meanchey", "Battambang",
+                    "Kampong Chhnang", "Kampong Speu", "Kampot", "Kandal", "Kâmpóng Thum, Cambodia",
+                    "Kep", "Koh Kong", "Kratie", "Mondulkiri", "Otdar Meanchey", "Pailin", "Phnompenh",
+                    "Preah Sihanouk", "Preah Vihear", "Prey Veng", "Pursat", "Rotanak Kiri", "Siem Reap",
+                    "Sihanoukville", "Stung Treng", "Svay Rieng", "Tbong Khmum", "Kinshasa", "Hồng Kông",
+                    "Attapeu", "Bokeo", "Bolikhamsai", "Champasak", "Houaphanh", "Khammouane",
+                    "Louang Namtha", "Luang Prabang", "Oudomxay", "Phongsaly", "Sainyabuli", "Salavan",
+                    "Savannakhet", "Sekong", "Vientiane", "Xaisomboun", "Xiangkhouang", "Qatar"]
+
+cities_of_vn.each do |city_name|
+  City.create(name: city_name, country: viet_nam)
+end
+
+cities_of_another_country.each do |city_name|
+  City.create(name: city_name, country: another)
+end

lib/tasks/data.rake

+require "./app/data/crawler.rb"
+
+namespace :data do
+  task insert_job: :environment do |t|
+    links = Crawler.get_job_links
+    links = Job.filter_link_exist(links)
+    @data = Crawler.crawl_job_infomation(links)
+    Job.create_new_jobs(@data)
+  end
+end