routes.rb

# How to not use 'before_action :authorize_user!' in controllers

devise_for :users
root to: "home#index"

# this route for signed in users and guests
resources :games, only: [:show]

# create routes with redirect to sign_in for guests
authenticate(:user) do
  resources :games, only: [:new]
  resources :participations, only: [:create]
end

# these routes are for signed in user
authenticated(:user) do
  resources :games
  resources :participations, only: [:create, :destroy]
  resources :weights, only: [:new, :create, :index]
end