2 files changed, 23 insertions, 1 deletions

@@ -0,0 +1,21 @@
+class AddLatestPostAtToStream < ActiveRecord::Migration[7.1]
+  def up
+    add_column :streams, :latest_post_at, :datetime
+    
+    Stream.all.each do |stream|
+      if stream.updates.empty?
+        stream.latest_post_at = stream.created_at
+      else
+        stream.latest_post_at = stream.updates.order(created_at: :desc).first.created_at
+      end
+
+      stream.save!
+    end
+
+    change_column_null :streams, :latest_post_at, false
+  end
+
+  def down
+    remove_column :streams, :latest_post_at, :datetime
+  end
+end
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2025_01_12_025207) do
+ActiveRecord::Schema[7.1].define(version: 2025_05_12_181245) do
   create_table "active_storage_attachments", force: :cascade do |t|
     t.string "name", null: false
     t.string "record_type", null: false
@@ -358,6 +358,7 @@ ActiveRecord::Schema[7.1].define(version: 2025_01_12_025207) do
     t.string "slug"
     t.datetime "created_at", precision: nil, null: false
     t.datetime "updated_at", precision: nil, null: false
+    t.datetime "latest_post_at", null: false
   end
 
   create_table "taggings", force: :cascade do |t|