Application Controller

Question 1

(APP) def current_user

Answer 1

@current_user ||= User.find_by(session_token: session[:session_token])

Question 2

(APP) def ensure_logged_in!

Answer 2

redirect_to new_session_url unless logged_in?

Question 3

(APP) def log_in!

Answer 3

def log_in!(user)
session_token = user.reset_session_token!
@current_user = user
end

Question 4

(APP) def log_out!

Answer 4

current_user.reset_session_token!
session[:session_token] = nil
@current_user = nil

Question 5

(APP) def logged_in?

Answer 5

!!current_user