As a user, I will receive a confirmation e-mail.

[clarkngo]

• [x] create a dummy e-mail account using GMail or other provider for this Rails application
• [x] add the confirmable option to the User model and create the appropriate migration file. Please read.
• [ ] create a file called config/initializers/mail.rb file to hold your e-mail settings for development, test, and production environments. Please read sections 6, 7, and 8.
• [x] install and configure Figaro gem to manage environment variables for your development, test, and production environments. Please watch.
• [ ] write a feature spec which tests that the confirmation e-mail message has been successfully sent to the user

[clarkngo]

Do i need to follow this documentation (https://edgeguides.rubyonrails.org/action_mailer_basics.html and) create the mailer first (rails generate mailer UserMailer)?

[conradwt]

No, I recommend using the link here because edgeguides refers to Rails 6 beta at this time. Next, you're correct that you can use rails generate mailer UserMailer. However, you shouldn't be writing mailer specs. They should be removed if these files are generated.

[clarkngo]

rails generate mailer UserMaileroutputs:

create  app/mailers/user_mailer.rb
create  app/mailers/application_mailer.rb
invoke  erb
create    app/views/user_mailer
create    app/views/layouts/mailer.text.erb
create    app/views/layouts/mailer.html.erb
invoke  test_unit
create    test/mailers/user_mailer_test.rb
create    test/mailers/previews/user_mailer_preview.rb

I should remove the following files?

test/mailers/user_mailer_test.rb
test/mailers/previews/user_mailer_preview.rb

[conradwt]

@clarkngo There's no need to create a UserMailer here because this functionality exists within Devise. Thus, I recommend that you review Devise docs.