xxx

app/controllers/attachments_controller.rb

@@ -18,8 +18,7 @@ class AttachmentsController < ApplicationController
 
     pdf_attachment = params[:disposition] || "attachment"
     if pdf_attachment == "inline"
-      send_data absolute_path(local_path(@file)),filename: @file.filename, disposition: 'inline',type: 'application/pdf'
-      # render pdf: absolute_path(local_path(@file)), filename: @file.filename, disposition: 'inline', type: @file.content_type.presence || 'application/octet-stream'
+      send_file absolute_path(local_path(@file)),filename: @file.filename, disposition: 'inline',type: 'application/pdf'
     else
       send_file(absolute_path(local_path(@file)), filename: @file.filename,stream:false, type: @file.content_type.presence || 'application/octet-stream')
     end