change handle in controller to handle in model

app/controllers/cities_controller.rb

 class CitiesController < ApplicationController
   def index
-    @cities_vietnam = City.all_city.where('location = 1')
-    @cities_international = City.all_city.where('location = 0')
+    @cities_vietnam = City.all_city.vietnam
+    @cities_international = City.all_city.international
   end
 end

app/models/city.rb

@@ -2,10 +2,11 @@ class City < ApplicationRecord
   has_many :city_jobs
   has_many :jobs, through: :city_jobs
 
+  scope :all_city, -> { joins(:jobs).group(:city_id).order('count(job_id) DESC') }
+  scope :vietnam, -> { where('location = 1') }
+  scope :international, -> { where('location = 0') }
+
   def self.top_city
     joins(:jobs).group(:city_id).order('count(job_id) DESC').limit(9)
   end
-  def self.all_city
-    joins(:jobs).group(:city_id).order('count(job_id) DESC')
-  end
 end

lib/src/job_parser.rb

@@ -15,6 +15,7 @@ class JobParser
     links = info.css('div.caption a.company-name').map { |link| link['href'] }
     links.each do |link|
       next if link == 'javascript:void(0);'
+
       page = Nokogiri::HTML(URI.open(URI.escape(link)))
       name = page.search('p.name')&.text
       next if name.blank?