调试信息

app/controllers/attachments_controller.rb

@@ -205,6 +205,9 @@ class AttachmentsController < ApplicationController
   end
 
   def send_file_with_range(path, options = {})
+    logger.info("########request.headers: #{request.headers}")
+    logger.info("########request.headers: #{File.exist?(path)}")
+
     if File.exist?(path)
       size = File.size(path)
       logger.info("########request.headers: #{request.headers}")