フロントエンドプレイアブル

app/controllers/application_controller.rb

@@ -0,0 +1,33 @@
+class ApplicationController < ActionController::Base
+  # Only allow modern browsers supporting webp images, web push, badges, import maps, CSS nesting, and CSS :has.
+  allow_browser versions: :modern
+
+  # Changes to the importmap will invalidate the etag for HTML responses
+  stale_when_importmap_changes
+
+  helper_method :current_user, :logged_in?
+
+  private
+
+  def current_user
+    @current_user ||= User.find_by(id: session[:user_id]) if session[:user_id]
+  end
+
+  def logged_in?
+    current_user.present?
+  end
+
+  def require_login
+    unless logged_in?
+      flash[:alert] = "ログインが必要です"
+      redirect_to login_path
+    end
+  end
+
+  def require_admin
+    unless logged_in? && current_user.admin?
+      flash[:alert] = "管理者権限が必要です"
+      redirect_to root_path
+    end
+  end
+end