Extend notifications to be marked as read and unread

app/controllers/notifications_controller.rb

@@ -2,28 +2,40 @@ class NotificationsController < ApplicationController
   include CustomUrlsHelper
 
   before_action :authenticate_user!
-  after_action :mark_as_read, only: :show
   skip_authorization_check
 
+  respond_to :html, :js
+
   def index
-    @notifications = current_user.notifications.unread.recent.for_render
+    @notifications = current_user.notifications.unread
   end
 
   def show
     @notification = current_user.notifications.find(params[:id])
+    @notification.mark_as_read
     redirect_to linkable_resource_path(@notification)
   end
 
+  def read
+    @notifications = current_user.notifications.read
+  end
+
   def mark_all_as_read
-    current_user.notifications.each { |notification| notification.mark_as_read }
+    current_user.notifications.unread.each { |notification| notification.mark_as_read }
     redirect_to notifications_path
   end
 
-  private
+  def mark_as_read
+    @notification = current_user.notifications.find(params[:id])
+    @notification.mark_as_read
+  end
 
-    def mark_as_read
-      @notification.mark_as_read
-    end
+  def mark_as_unread
+    @notification = current_user.notifications.find(params[:id])
+    @notification.mark_as_unread
+  end
+
+  private
 
     def linkable_resource_path(notification)
       case notification.linkable_resource.class.name