修改隐藏项目里看得到的内容，下载不能

app/controllers/stores_controller.rb

@@ -14,6 +14,7 @@ class StoresController < ApplicationController
     result.map { |res|
       if(res.container.nil? || 
         (res.container.class.to_s=="Project" && res.container.is_public == false) ||
+        (res.container.has_attribute?(:project) && res.container.project.is_public == false) ||
         (res.container.class.to_s=="HomeworkAttach" && res.container.bid.reward_type == 3) ||
         false
         )