Ruby version 2.5.1

Rails version 5.2.6

Create new rails application for API using below command: rails new article-app --api

creating new application using --api this will not generating any middleware such as view, helper, asserts. And ApplicationController inherit from ActionController::API instead of ActionController::Base

Steps:

1. rails g model user email password_digest confirmation_token confirmed_at confirmation_sent_at
2. rails db:migrate
3. gem 'bcrypt'
4. gem 'letter_opener'
5. rails g job send_confirmation_instruction
6. rails generate mailer UserMailer
7. gem 'sidekiq'
8. rails g controller registrations
9. rails g controller sessions
10. gem 'jwt'
11. rails g model article title description user:references
12. rails g controller articles

gem 'letter_opener'

Open letter is used for the set delivery method into development.rb when email is being sent. Add below configuration into config/environments/development.rb

config.action_mailer.delivery_method = :letter_opener config.action_mailer.perform_deliveries = true

Create a job to send an email confirmation. I used sidekiq as a background job to send emails. gem 'sidekiq' run bundle install. Set your queuing backend after installing the background job. add queue_adapter into config/application.rb config.active_job.queue_adapter = :sidekiq

I've been using action mailer to deliver emails. rails generate mailer UserMailer

Now UserMailer has a confirmation_notify method. And under app/views/user_mailer/, build confirmation notify.html.erb

Setup to local:

1. clone it in local
2. bundle install
3. rails db:create db:migrate Ready Go !!!