Add started_at/ended_at datetime fields to Banner

app/helpers/application_helper.rb

@@ -25,7 +25,7 @@ def today
 
   def display_banner
     # Cache banners to avoid repeated queries during page render
-    @banners ||= Banner.published.select("id, content").to_a
+    @banners ||= Banner.active.select("id, content").to_a
     return if @banners.empty?
 
     safe_content_array = @banners.map { |banner|

app/models/banner.rb

@@ -12,4 +12,10 @@ class Banner < ApplicationRecord
   def name
     content.truncate(50)
   end
+
+  scope :active, -> {
+   where(show: true)
+     .where("started_at IS NULL OR started_at <= ?", Time.current)
+     .where("ended_at IS NULL OR ended_at >= ?", Time.current)
+ }
 end

db/migrate/20260305105227_add_timeto_banner.rb

@@ -0,0 +1,6 @@
+class AddTimetoBanner < ActiveRecord::Migration[8.1]
+  def change
+    add_column :banners, :started_at, :datetime
+    add_column :banners, :ended_at, :datetime
+  end
+end