优化issue显示代码

app/controllers/issues_controller.rb

@@ -113,12 +113,8 @@ class IssuesController < ApplicationController
 
   def show
     # 当前用户查看指派给他的缺陷消息，则设置消息为已读
-    query = @issue.forge_messages
-    query.each do |m|
-      if m.user_id == User.current.id
-        m.update_attribute(:viewed, true)
-      end
-    end
+    query = ForgeMessage.where("forge_message_type =? and user_id =? and forge_message_id =?", "Issue", User.current, @issue).first
+    query.update_attribute(:viewed, true) unless query.nil?
     # 缺陷状态更新
     query_journals = @issue.journals
       query_journals.each do |query_journal|