diff --git a/app/helpers/api_index_helper.rb b/app/helpers/api_index_helper.rb
index 2010f99a..da6b25c5 100644
--- a/app/helpers/api_index_helper.rb
+++ b/app/helpers/api_index_helper.rb
@@ -132,7 +132,7 @@ module ApiIndexHelper
   def set_children_sections(objects,is_detail)
     children_sections_array = []
     objects.find_each do |sec|
-      image = sec.attachments&.last
+      image = sec.image_attachment
       s_section = {
         id: sec.id,
         title: sec.title
diff --git a/app/models/concerns/watchable.rb b/app/models/concerns/watchable.rb
index 7d45d6ef..5d996b1f 100644
--- a/app/models/concerns/watchable.rb
+++ b/app/models/concerns/watchable.rb
@@ -13,7 +13,8 @@ module Watchable
   end
 
   def watched_by?(user)
-    !!(user && self.watcher_user_ids && self.watcher_user_ids.detect {|uid| uid == user.id })
+    watcher_users.exists?(id: user.id)
+    # !!(user && self.watcher_user_ids && self.watcher_user_ids.detect {|uid| uid == user.id })
   end
 
   def watch!(watchable)
diff --git a/app/services/memos_service.rb b/app/services/memos_service.rb
index 59322237..df400dc2 100644
--- a/app/services/memos_service.rb
+++ b/app/services/memos_service.rb
@@ -477,9 +477,9 @@ class MemosService
       set_msg = "您没有权限"
     end
 
-    memos = Memo.field_for_list.includes(:praise_tread, :author).where(:root_id => nil).order("sticky=1 desc, #{s_order} desc").limit(15)
-    memo_list = memo_data memos
-    {status: set_status, message: set_msg, memo_list: memo_list}
+    # memos = Memo.field_for_list.includes(:praise_tread, :author, :forums).where(:root_id => nil).order("sticky=1 desc, #{s_order} desc").limit(15)
+    # memo_list = memo_data memos
+    {status: set_status, message: set_msg}
 
   end
 
diff --git a/db/migrate/20201014080839_add_watchers_count_to_memos.rb b/db/migrate/20201014080839_add_watchers_count_to_memos.rb
new file mode 100644
index 00000000..1bf0f6d0
--- /dev/null
+++ b/db/migrate/20201014080839_add_watchers_count_to_memos.rb
@@ -0,0 +1,5 @@
+class AddWatchersCountToMemos < ActiveRecord::Migration[5.2]
+  def change
+    add_column :memos, :watchers_count, :integer, default: 0
+  end
+end