Ruby on Rails Ruby on Rails Action Mailer, Background Jobs & Caching

Question 1

What class does ApplicationMailer inherit from in Ruby on Rails?

Accepted Answer

ActionMailer::Base

Answer

ActionController::Base

Answer

ActionDispatch::Mailer

Answer

ActionMailer::Controller

Question 2

Which method delivers an email synchronously (immediately) in Action Mailer?

Accepted Answer

deliver_now

Answer

deliver_async

Answer

deliver_immediately

Answer

send_mail

Question 3

Where should Action Mailer view templates be stored in a Rails application?

Accepted Answer

app/views/mailer_name/

Answer

app/mailers/views/mailer_name/

Answer

app/templates/mailers/

Answer

app/mail/templates/

Question 4

How do you set a default 'from' email address for all mailers in ApplicationMailer?

Accepted Answer

default from: 'noreply@app.com'

Answer

config.action_mailer.default_from = 'noreply@app.com'

Answer

set_default_from 'noreply@app.com'

Answer

ActionMailer.from = 'noreply@app.com'

Question 5

Which delivery method is configured for Action Mailer in the Rails test environment?

Accepted Answer

:test

Answer

:smtp

Answer

:sendmail

Answer

:file

Question 6

How do you schedule an email to be delivered 1 hour from now using Active Job integration?

Accepted Answer

deliver_later(wait: 1.hour)

Answer

deliver_now(delay: 1.hour)

Answer

schedule_at(Time.now + 1.hour)

Answer

deliver_in(1.hour)

Question 7

What is the correct way to attach a file to an email in Action Mailer?

Accepted Answer

attachments['report.pdf'] = File.read(path)

Answer

email.attach('report.pdf', File.read(path))

Answer

add_attachment 'report.pdf', data: File.read(path)

Answer

attach_file path, name: 'report.pdf'