翻转课堂的讨论区的数目不准确了

config/initializers/aliyun_vod_init.rb

@@ -10,6 +10,7 @@ rescue => ex
 
   puts %Q{\033[33m [warning] aliyun vod config or configuration.yml missing,
            please add it or execute 'cp config/configuration.yml.example config/configuration.yml' \033[0m}
+  aliyun_vod_config = {}
 end
 
 AliyunVod.access_key_id     = aliyun_vod_config['access_key_id']

db/migrate/20190823015610_add_message_count_for_boards.rb

@@ -0,0 +1,9 @@
+class AddMessageCountForBoards < ActiveRecord::Migration[5.2]
+  def change
+    boards = Board.where(:parent_id => 0)
+    Board.reset_column_information
+    boards.find_each do |board|
+      Board.reset_counters board.id, :messages
+    end
+  end
+end