Ruby on Rails教程：本地无法接收账户激活邮件求助

Hey there! I’ve worked through Hartl’s Rails Tutorial multiple times, so let me walk you through the most common fixes for missing activation emails when running the sample app locally.

• Check your development email delivery setup
  By default, the tutorial’s app uses letter_opener to display emails in a browser tab instead of sending them to a real inbox. First, confirm the gem is in your Gemfile under the development group:

  # Gemfile
  group :development do
    gem 'letter_opener'
    # ... other dev gems
  end
  

  Run bundle install if you haven’t already, then verify your config/environments/development.rb has these settings:

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

  Don’t forget to restart your Rails server after making changes—this is a super easy step to skip!

• Verify the activation email trigger logic
  Double-check that the email is actually being sent when a user signs up. Look at your User model to confirm the send_activation_email method exists:

  # app/models/user.rb
  def send_activation_email
    UserMailer.account_activation(self).deliver_now
  end
  

  Then make sure this method is called in your UsersController’s create action:

  # app/controllers/users_controller.rb
  def create
    @user = User.new(user_params)
    if @user.save
      @user.send_activation_email
      flash[:info] = "Please check your email to activate your account."
      redirect_to root_url
    else
      render 'new'
    end
  end
  

• Test the mailer directly via Rails console
  You can rule out template or data issues by triggering the email manually. Open your terminal, run rails c, then run:

  user = User.first
  UserMailer.account_activation(user).deliver_now
  

  If letter_opener is working, a browser tab should pop up with the activation email. If not, check the console for error messages—maybe the activation token isn’t generating correctly, or the mailer template has a typo.

• Restart your local server
  Sometimes a hung or glitchy server can prevent email delivery from working properly. Stop your server with Ctrl+C, then restart it with rails s. You can also explicitly specify the development environment with RAILS_ENV=development rails s to be safe.

• Check spam folders (just in case)
  If you accidentally switched the delivery method to SMTP in development, your emails might be landing in spam. But the tutorial specifically uses letter_opener for local testing, so this is a long shot—worth checking anyway though!

Hope one of these steps gets your activation emails flowing so you can start testing your new features. Let me know if you hit any specific errors while troubleshooting!

内容的提问来源于stack exchange，提问作者Aly Dabbous