Action Mailer setup in Ruby on Rails - Mini Project: Build & Apply

Action Mailer setup

📖 Scenario: You are building a simple Rails app that needs to send emails to users. To do this, you will set up Action Mailer, which is the tool Rails uses to send emails.Imagine you want to send a welcome email to new users after they sign up.

🎯 Goal: Set up Action Mailer in a Rails app by creating a mailer class, configuring the default sender email, and defining a welcome email method.

📋 What You'll Learn

Create a mailer class named UserMailer

Set the default from email address to [e-mail]

Define a method welcome_email that takes a user parameter

Set the recipient email to user.email and the subject to Welcome to MyApp!

💡 Why This Matters

🌍 Real World

Sending emails like welcome messages, notifications, or password resets is common in web apps to communicate with users.

💼 Career

Understanding Action Mailer setup is essential for Rails developers to implement email features in real projects.

1

Create the mailer class

Create a mailer class called UserMailer that inherits from ApplicationMailer.

Ruby on Rails

# Create the UserMailer class inheriting from ApplicationMailer
# Your code here

Need a hint?

Use class UserMailer < ApplicationMailer to start the mailer class.

2

Set default sender email

Inside the UserMailer class, set the default from email address to '[e-mail]' using default from:.

Ruby on Rails

class UserMailer < ApplicationMailer
  # Set default from email
  # Your code here
end

Need a hint?

Use default from: '[e-mail]' inside the class.

3

Define the welcome_email method

Add a method called welcome_email inside UserMailer that takes a user parameter. Inside it, set @user = user and call mail with to: @user.email and subject: 'Welcome to MyApp!'.

Ruby on Rails

class UserMailer < ApplicationMailer
  default from: '[e-mail]'

  # Define welcome_email method
  # Your code here
end

Need a hint?

Define def welcome_email(user), assign @user = user, then call mail(to: @user.email, subject: 'Welcome to MyApp!').

4

Complete the mailer setup

Ensure the UserMailer class is properly closed with end and ready to be used to send emails.

Ruby on Rails

class UserMailer < ApplicationMailer
  default from: '[e-mail]'

  def welcome_email(user)
    @user = user
    mail(to: @user.email, subject: 'Welcome to MyApp!')
  end
  # Ensure class is closed
end

Need a hint?

Check that the class and method are properly closed with end.