讨论区发帖delay 模式优化

app/models/message.rb

@@ -328,19 +328,29 @@ class Message < ActiveRecord::Base
   def delay_message_send
     if self.course
       if self.parent_id.nil?   # 发帖
-        self.delay.contain_messages_message
+        dm = []
+        self.course.members.includes(:user).each do |m|
+          if self.author.allowed_to?(:as_teacher, self.course) &&  m.user_id != self.author_id   # 老师 自己的帖子不给自己发送消息
+            dm << {course_message_type:'Message',course_message_id:self.id, :user_id => m.user_id,
+                   :course_id => self.board.course_id, :viewed => false}
+            if dm.size >= 30
+              self.delay.contain_messages_message(dm)
+              dm.clear
+            end
+            unless dm.empty?
+              self.delay.contain_messages_message(dm)
             end
           end
         end
 
-  def contain_messages_message
-    self.course.members.includes(:user).each do |m|
-      if self.author.allowed_to?(:as_teacher, self.course) &&  m.user_id != self.author_id   # 老师 自己的帖子不给自己发送消息
-        self.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => self.board.course_id, :viewed => false)
       end
     end
   end
 
+  def contain_messages_message vs
+    CourseMessage.create(vs)
+  end
+
   #更新用户分数     -by zjc
   def be_user_score
     #新建message且无parent的为发帖