background jobs with resque

Gemfile

@@ -75,3 +75,5 @@ gem 'rsolr'
 
 gem 'carrierwave', '~> 2.0'
 
+#using rescue
+gem 'resque'

Gemfile.lock

@@ -148,8 +148,12 @@ GEM
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.0)
+    mono_logger (1.1.0)
     msgpack (1.3.3)
+    multi_json (1.14.1)
     multipart-post (2.1.1)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     mysql2 (0.5.3)
     nio4r (2.5.2)
     nokogiri (1.10.8)
@@ -165,6 +169,8 @@ GEM
     puma (4.3.1)
       nio4r (~> 2.0)
     rack (2.2.2)
+    rack-protection (2.0.8.1)
+      rack
     rack-proxy (0.6.5)
       rack
     rack-test (1.1.0)
@@ -199,15 +205,25 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
+    redis (4.1.4)
+    redis-namespace (1.7.0)
+      redis (>= 3.0.4)
     regexp_parser (1.7.0)
     responders (3.0.0)
       actionpack (>= 5.0)
       railties (>= 5.0)
+    resque (2.0.0)
+      mono_logger (~> 1.0)
+      multi_json (~> 1.0)
+      redis-namespace (~> 1.6)
+      sinatra (>= 0.9.2)
+      vegas (~> 0.1.2)
     rsolr (2.3.0)
       builder (>= 2.1.2)
       faraday (>= 0.9.0)
     ruby-vips (2.0.17)
       ffi (~> 1.9)
+    ruby2_keywords (0.0.2)
     ruby_dep (1.5.0)
     rubyzip (2.2.0)
     sass-rails (6.0.0)
@@ -224,6 +240,11 @@ GEM
       childprocess (>= 0.5, < 4.0)
       rubyzip (>= 1.2.2)
     settingslogic (2.0.9)
+    sinatra (2.0.8.1)
+      mustermann (~> 1.0)
+      rack (~> 2.0)
+      rack-protection (= 2.0.8.1)
+      tilt (~> 2.0)
     spring (2.1.0)
     spring-watcher-listen (2.0.1)
       listen (>= 2.7, < 4.0)
@@ -244,6 +265,8 @@ GEM
     turbolinks-source (5.2.0)
     tzinfo (1.2.6)
       thread_safe (~> 0.1)
+    vegas (0.1.11)
+      rack (>= 1.0.0)
     warden (1.2.8)
       rack (>= 2.0.6)
     web-console (4.0.1)
@@ -287,6 +310,7 @@ DEPENDENCIES
   pry-nav
   puma (~> 4.1)
   rails (~> 6.0.2, >= 6.0.2.1)
+  resque
   rsolr
   sass-rails (>= 6)
   selenium-webdriver

app/controllers/jobs_controller.rb

@@ -33,7 +33,7 @@ class JobsController < ApplicationController
     apply_job.save!
 
     #send email for user applied 
-    JobMailer.with(name: session[:apply_job]["fullname"], email: session[:apply_job]["email"], job_id: session[:job_id], cv_url: session[:apply_job]["cv_url"]).welcome_email.deliver_now
+    Resque.enqueue(SendMail, apply_job.id)   
   end
 
 

app/mailers/job_mailer.rb

@@ -2,10 +2,10 @@ class JobMailer < ApplicationMailer
   default from: 'notifications@example.com'
    
   def welcome_email
-    @email = params[:email]
-    @job  = Job.find(params[:job_id])
-    @name = params[:name]
-    @cv_url = params[:cv_url]
+    @email = params[:apply_job].email
+    @job  = Job.find(params[:apply_job].job_id)
+    @name = params[:apply_job].fullname
+    @cv_url = params[:apply_job].cv_url
     mail(to: @email, subject: 'Welcome to My Awesome Site')
   end
 end

app/workers/send_mail.rb

+class SendMail
+  @queue = :applied_queue
+
+  class << self
+    def perform(apply_job_id)
+      apply_job = AppliedJob.find apply_job_id
+      JobMailer.with(apply_job: apply_job).welcome_email.deliver_now
+      #INTERVAL=10 QUEUE=* rake resque:work
+    end
+  end
+end

config/routes.rb

 Rails.application.routes.draw do
+  require 'resque/server' 
   resources :cities, only: [:index]
   resources :industries, only: [:index]
   resources :jobs, only: [:index]
@@ -19,6 +20,7 @@ Rails.application.routes.draw do
   get 'applyjoblist', to: 'jobs#applyjoblist'
   get 'jobs/search' => 'jobs#search', as: :job_search
   root 'top_page#index'
+  mount Resque::Server.new, :at => "/resque"
   # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
   resources :top_page
 end

lib/tasks/resque.rake

+require 'resque/tasks'
+task "resque:setup" => :environment
\ No newline at end of file