2023-05-29 - Authentication and Devise

• back to Le Wagon's Bootcamp log.
• link to the lecture

main topics

• devise for authentication
• https://github.com/heartcombo/devise

Starting with devise

bundle add devise
rails generate devise:install
rails generate devise User
rails db:migrate

# optional
rails generate devise:views

Helpers:

# true / false
user_signed_in?

# user instance / nil
current_user

# redirect to sign in if needed
authenticate_user!

Logout link:

link_to(
  "Logout",
  destroy_user_session_path,
  data: { turbo_method: :delete }
)

Usually a controller has:

before_action :authenticate_user!, except: %i[index show]