email confirmation using devise - ruby-on-rails

Question

I follow the instruction in vs code after i run rails g devise:install
I added config.action_mailer.default_url_options = { host: 'localhost', port: 3000 } in development.rb
I also uncomment the confirmable in migration file .
I also added confirmable in user.rb
In environment.rb this is what i have
# Load the Rails application.
require_relative "application"
# Initialize the Rails application.
Rails.application.initialize!
ActionMailer::Base.delivery_method = :smtp
ActionMailer::Base.perform_deliveries = true
ActionMailer::Base.smtp_settings = {
address: 'smtp.gmail.com',
port: 465,
domain: 'gmail.com',
user_name: ENV['test#gmail.com'],
password: ENV['123456'],
authentication: 'plain',
:ssl =>true,
:tsl => true,
enable_starttls_auto: true
}
Im not sure on how to put the correct username and password .
Im not getting any error message when i go to signup but when i go to the email that i use to sign up , im not getting any email .
I also enable less secure app in google settings for both email .
Please help
Thank you

Answer 1

The modern Rails approach (5.1+) is to use encrypted secrets. When you run rails credentials:edit Rails will open a basic credentials file in your editor of choice. You can then just add your Gmail password and email to the file:
gmail:
password: your_password_goes_here
user_name: your-email-address#gmail.com
Rails will then create the config/credentials.yml.enc file that can be checked into version control. The file is encrypted with your master.key file which should not be checked into version control.
You can then access the encrypted secrets with Rails.application.credentials:
ActionMailer::Base.smtp_settings = {
address: 'smtp.gmail.com',
port: 465,
domain: 'gmail.com',
user_name: Rails.application.credentials.gmail.fetch(:user_name),
password: Rails.application.credentials.gmail.fetch(:password),
authentication: 'plain',
ssl: true,
tsl: true,
enable_starttls_auto: true
}

Answer 2

Firstly you need to install a gem such as dotenv-rails.
This will allow you to use environment variables.
To do so create a .env file in the root of your project.
Inside of that file you can add environment variables such as:
EMAIL_USERNAME=someusername
EMAIL_PASSWORD=somepassword
And then in your environment.rb you can use it like this:
user_name: ENV['EMAIL_USERNAME'],
password: ENV['EMAIL_PASSWORD']