Action Mailer setup in Ruby on Rails - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Action Mailer in Rails?

Action Mailer is a Rails framework component that helps you send emails from your application. It works like a post office, letting you create, format, and deliver emails easily.

beginner

Which file do you configure email delivery settings in a Rails app using Action Mailer?

You configure email delivery settings in the config/environments/*.rb files, such as config/environments/development.rb or production.rb. This is where you set SMTP details or other delivery methods.

beginner

How do you generate a new mailer in Rails?

Run the command <code>rails generate mailer MailerName</code>. This creates a mailer class and view files where you define email methods and templates.

beginner

What method do you call inside a mailer class to set the email recipient and subject?

Inside a mailer method, you use the mail(to: ..., subject: ...) method to set the recipient's email and the email subject line.

beginner

Where do you place the email templates for Action Mailer?

Email templates go in app/views/mailer_name/ folder. You create one template per mailer method, usually in HTML and/or plain text formats.

Where do you configure SMTP settings for Action Mailer in Rails?

A In app/mailers/application_mailer.rb

B In config/environments/development.rb or production.rb

C In config/routes.rb

D In app/views/layouts/application.html.erb

SMTP and other delivery settings belong in environment config files like development.rb or production.rb.

Which command creates a new mailer in Rails?

A rails generate mailer MailerName

B rails generate controller MailerName

C rails new mailer MailerName

D rails create mailer MailerName

The correct command to generate a mailer is 'rails generate mailer MailerName'.

How do you specify the recipient and subject in a mailer method?

A Using mail(to: ..., subject: ...)

B Using send_email(to: ..., title: ...)

C Using deliver(to: ..., subject: ...)

D Using email(to: ..., header: ...)

The mail method is used to set recipient and subject inside mailer methods.

Where are email templates stored for a mailer named 'UserMailer'?

A app/views/mailers/

B app/mailers/user_mailer/

C app/views/user_mailer/

D app/templates/user_mailer/

Email templates go inside app/views/mailer_name/, matching the mailer class name.

What is the base mailer class that your mailers usually inherit from?

A BaseMailer

B ActionMailer::Base

C Mail::Base

D ApplicationMailer

By default, mailers inherit from ApplicationMailer, which itself inherits from ActionMailer::Base.

Explain the steps to set up Action Mailer in a new Rails app to send emails.

Think about creating the mailer, configuring delivery, writing templates, and sending emails.

Describe where and how you configure email delivery settings for development and production environments in Rails.

Focus on environment config files and SMTP setup.