Require authentication for most actions

app/controllers/application_controller.rb

@@ -1,3 +1,4 @@
 class ApplicationController < ActionController::Base
   include Authenticatable
+  include Authorizable
 end

app/controllers/concerns/authorizable.rb

@@ -0,0 +1,37 @@
+module Authorizable
+  extend ActiveSupport::Concern
+
+  included do
+    before_action :require_registered_user
+  end
+
+  class_methods do
+    def allow_unregistered_user(**args)
+      skip_before_action :require_registered_user, **args
+    end
+
+    def require_unregistered_user(**args)
+      skip_before_action :require_registered_user, **args
+      before_action :require_unregistered_user, **args
+    end
+  end
+
+  private
+
+  def require_registered_user
+    Current.user.registered? || redirect_to_sign_in
+  end
+
+  def require_unregistered_user
+    Current.user.unregistered? || redirect_to_dashboard
+  end
+
+  def redirect_to_sign_in
+    session[:return_url] = request.url
+    redirect_to new_session_url, alert: "You must be logged in to continue."
+  end
+
+  def redirect_to_dashboard
+    redirect_to root_url, alert: "You are already logged in."
+  end
+end

app/controllers/sessions_controller.rb

@@ -1,4 +1,5 @@
 class SessionsController < ApplicationController
+  require_unregistered_user only: %i[new create]
   # GET /sessions/new
   def new
     @session = Session.new
@@ -11,7 +12,6 @@ class SessionsController < ApplicationController
     respond_to do |format|
       if @session.save
         session[:current_user_id] = @session.user_id
-        Rails.logger.info("ID: #{@session.user_id}")
 
         format.html { redirect_to root_url, notice: "Session was successfully created." }
         format.json { render :show, status: :created, location: @session }
@@ -27,7 +27,7 @@ class SessionsController < ApplicationController
     session[:current_user_id] = nil
 
     respond_to do |format|
-      format.html { redirect_to root_url, notice: "Session was successfully destroyed." }
+      format.html { redirect_to new_session_url, notice: "Session was successfully destroyed." }
       format.json { head :no_content }
     end
   end

app/controllers/users_controller.rb

@@ -1,4 +1,6 @@
 class UsersController < ApplicationController
+  require_unregistered_user only: %i[new create]
+
   before_action :set_user, only: %i[ show edit update destroy ]
 
   # GET /users or /users.json
@@ -25,6 +27,9 @@ class UsersController < ApplicationController
 
     respond_to do |format|
       if @user.save
+        @session = Session.new(session_params).save
+        session[:current_user_id] = @session.user_id
+
         format.html { redirect_to user_url(@user), notice: "User was successfully created." }
         format.json { render :show, status: :created, location: @user }
       else
@@ -67,4 +72,8 @@ class UsersController < ApplicationController
     def user_params
       params.require(:user).permit(:email, :password, :password_confirmation)
     end
+
+    def session_params
+      user_params.slice(:email, :password)
+    end
 end

app/models/guest_user.rb

@@ -1,3 +1,5 @@
 class GuestUser
   def registered? = false
+
+  def unregistered? = true
 end

app/models/user.rb

@@ -2,4 +2,6 @@ class User < ApplicationRecord
   has_secure_password
 
   def registered? = true
+
+  def unregistered? = false
 end