using rake task

app/controllers/cities_controller.rb

@@ -2,9 +2,4 @@ class CitiesController < ApplicationController
   def index
     @cities = City.all
   end
-
-  def import
-    City.cities_import
-    redirect_to root_path
-  end
 end

app/controllers/companies_controller.rb

@@ -2,9 +2,4 @@ class CompaniesController < ApplicationController
   def index
     @companies = Company.all
   end
-
-  def import
-    Company.companies_import
-    redirect_to companies_index_path
-  end
 end

app/controllers/industries_controller.rb

@@ -2,9 +2,4 @@ class IndustriesController < ApplicationController
   def index
     @industries = Industry.all
   end
-
-  def import
-    Industry.industries_import
-    redirect_to root_path
-  end
 end

app/controllers/jobs_controller.rb

@@ -2,9 +2,4 @@ class JobsController < ApplicationController
   def index
     @jobs = Job.all
   end
-
-  def import
-    Job.jobs_import
-    redirect_to jobs_index_path
-  end
 end

app/models/city.rb

@@ -2,20 +2,5 @@
 #   t.string :name, unique: true
 #   t.string :region
 
-require "csv"
-require "activerecord-import"
-# require "activerecord -import/active_record/adapters/mysql_adapter"
-
-
 class City < ApplicationRecord
-  def self.cities_import
-    cities = []
-    columns = [:name, :region]
-
-    CSV.foreach(Rails.root.join("lib", "jobss.csv"), headers: true) do |row|
-      cities << {name: row["company province"], region: "Việt Nam"}
-    end
-
-    City.import columns, cities, on_duplicate_key_ignore: true
-  end
 end

app/models/company.rb

@@ -6,22 +6,6 @@
 
 # add_index :industries, :name, unique: true
 
-require "csv"
-require "activerecord-import"
-# require "activerecord -import/active_record/adapters/mysql_adapter"
-
 class Company < ApplicationRecord
   has_many :jobs, dependent: :destroy
-
-  def self.companies_import
-    companies = []
-    columns = [:name, :email, :address, :company_code]
-
-    CSV.foreach(Rails.root.join("lib", "jobss.csv"), headers: true) do |row|
-      companies << {name: row["company name"], email: row["contact email"],
-                    address: row["company address"], company_code: row["company id"]}
-    end
-
-    Company.import columns, companies, on_duplicate_key_ignore: true
-  end
 end

app/models/industry.rb

 # In db
 # t.string :name
 
-require "csv"
-require "activerecord-import"
-# require "activerecord -import/active_record/adapters/mysql_adapter"
-
 class Industry < ApplicationRecord
-  def self.industries_import
-    industries = []
-    columns = [:name]
-
-    CSV.foreach(Rails.root.join("lib", "jobss.csv"), headers: true) do |row|
-      industries << {name: row["category"]}
-    end
-
-    Industry.import columns, industries, on_duplicate_key_ignore: true
-  end
 end

app/models/job.rb

@@ -11,25 +11,6 @@
 #   t.datetime :expiration_date
 #   t.references :company, null: false, foreign_key: true
 
-require "csv"
-require "activerecord-import"
-# require "activerecord -import/active_record/adapters/mysql_adapter"
-
 class Job < ApplicationRecord
   belongs_to :company
-
-  def self.jobs_import
-    jobs = []
-    columns = [:title, :level, :salary, :description, :short_des, :requirement,
-               :category, :company_id]
-
-    CSV.foreach(Rails.root.join("lib", "jobss.csv"), headers: true) do |row|
-      jobs << {title: row["name"], level: row["level"], salary: row["salary"],
-               description: row["description"], short_des: row["benefit"],
-               requirement: row["requirement"], category: row["type"],
-               company_id: Company.find_by(company_code: row["company id"])&.id}
-    end
-
-    Job.import columns, jobs
-  end
 end

app/services/cities.rb

+require "csv"
+require "activerecord-import"
+# require "activerecord -import/active_record/adapters/mysql_adapter"
+
+class CityImport
+  def cities
+    cities = []
+    columns = [:name, :region]
+
+    CSV.foreach(Rails.root.join("lib", "jobss.csv"), headers: true) do |row|
+      cities << {name: row["company province"], region: "Việt Nam"}
+    end
+
+    City.import columns, cities, on_duplicate_key_ignore: true
+  end
+end
\ No newline at end of file

app/services/companies.rb

+require "csv"
+require "activerecord-import"
+# require "activerecord -import/active_record/adapters/mysql_adapter"
+
+class CompanyImport
+  def companies
+    companies = []
+    columns = [:name, :email, :address, :company_code]
+
+    CSV.foreach(Rails.root.join("lib", "jobss.csv"), headers: true) do |row|
+      companies << {name: row["company name"], email: row["contact email"],
+                    address: row["company address"], company_code: row["company id"]}
+    end
+
+    Company.import columns, companies, on_duplicate_key_ignore: true
+  end
+end
\ No newline at end of file

app/services/industries.rb

+require "csv"
+require "activerecord-import"
+# require "activerecord -import/active_record/adapters/mysql_adapter"
+
+class IndustryImport
+  def industries
+    industries = []
+    columns = [:name]
+
+    CSV.foreach(Rails.root.join("lib", "jobss.csv"), headers: true) do |row|
+      industries << {name: row["category"]}
+    end
+
+    Industry.import columns, industries, on_duplicate_key_ignore: true
+  end
+end

app/services/jobs.rb

+require "csv"
+require "activerecord-import"
+# require "activerecord -import/active_record/adapters/mysql_adapter"
+
+class JobImport
+  def jobs
+    jobs = []
+    columns = [:title, :level, :salary, :description, :short_des, :requirement,
+               :category, :company_id]
+
+    CSV.foreach(Rails.root.join("lib", "jobss.csv"), headers: true) do |row|
+      jobs << {title: row["name"], level: row["level"], salary: row["salary"],
+               description: row["description"], short_des: row["benefit"],
+               requirement: row["requirement"], category: row["type"],
+               company_id: Company.find_by(company_code: row["company id"])&.id}
+    end
+
+    Job.import columns, jobs
+  end
+end
\ No newline at end of file

config/routes.rb

 Rails.application.routes.draw do
   get "companies/index"
-  get "companies/import"
   resources :companies do
     collection {post :import}
   end
   get "industries/index"
-  get "industries/import"
   resources :industries do
     collection {post :import}
   end
   get "cities/index"
-  get "cities/import"
   resources :cities do
     collection {post :import}
   end
   get "jobs/index"
-  get "jobs/import"
   resources :jobs do
     collection {post :import}
   end

lib/tasks/task.rake

+require "./app/services/cities.rb"
+require "./app/services/industries.rb"
+require "./app/services/companies.rb"
+require "./app/services/jobs.rb"
+
+namespace :task do
+  desc "import data"
+  task import: :environment do
+    CityImport.new.cities
+    CompanyImport.new.companies
+    IndustryImport.new.industries
+    JobImport.new.jobs
+  end
+end

test/controllers/jobs_controller_test.rb

@@ -5,9 +5,4 @@ class JobsControllerTest < ActionDispatch::IntegrationTest
     get jobs_index_url
     assert_response :success
   end
-
-  test "should get import" do
-    get jobs_import_url
-    assert_response :success
-  end
 end