首页排序大概搞定

app/helpers/welcome_helper.rb

@@ -109,13 +109,13 @@ module WelcomeHelper
 
     # resultSet = Memo.where('memos.parent_id IS NULL').includes(:last_reply).order('COALESCE (last_replies_memos.created_at, memos.created_at) DESC').limit(limit)
     # resultSet += Message.where('messages.parent_id IS NULL').includes(:last_reply).order('COALESCE (last_replies_messages.created_on, messages.created_on) DESC').limit(limit)
-    resultSet = Memo.where('parent_id IS NULL').order('updated_at DESC').limit(limit)
-    resultSet += Message.where('parent_id IS NULL').order('updated_on DESC').limit(limit)
-    # resultSet = resultSet.to_a
+    resultSet = Memo.includes(:children).where('parent_id IS NULL').order('updated_at DESC').limit(limit)
+    resultSet += Message.includes(:children).where('parent_id IS NULL').order('updated_on DESC').limit(limit)
     resultSet.sort! {|x,y| y.event_datetime <=> x.event_datetime}
-    # for i in 0..(resultSet.size-1)
-    #   resultSet[i] = resultSet[i].parent if resultSet[i].parent
-    # end
+    resultSet = resultSet.to_a
+    for i in 0..(resultSet.size-1)
+      resultSet[i] = resultSet[i].children.last if resultSet[i].children.count > 0
+    end
     resultSet.take(limit)
   end