未登录附件不能下载问题

app/controllers/attachments_controller.rb

@@ -660,8 +660,8 @@ class AttachmentsController < ApplicationController
   end
 
   def has_login
-    unless @attachment && @attachment.container_type == "Organization"
-      unless @attachment && @attachment.container_type == "PhoneAppVersion"
+    unless (@attachment && @attachment.container_type == "Organization").nil?
+      unless (@attachment && @attachment.container_type == "PhoneAppVersion").nil?
         render_403 if  !User.current.logged? && !(@attachment.container_type == 'OrgSubfield' && @attachment.container.organization.allow_guest_download) && !(@attachment.container_type == 'OrgDocumentComment' && @attachment.container.organization.allow_guest_download)
       end
     end