修改删除附件是方法

app/controllers/attachments_controller.rb

@@ -203,7 +203,11 @@ class AttachmentsController < ApplicationController
     if @attachment.container.respond_to?(:init_journal)
       @attachment.container.init_journal(User.current)
     end
-    @attachment.destroy
+    if @attachment.container
+      @attachment.container.attachments.delete(@attachment)
+    else
+      @attachment.destroy
+    end
 
     respond_to do |format|
       if !@attachment.container.nil? &&