Question

I’m using Mongrel::DirHandler to control response headers for static files – this works great on my dev machine. My production machine uses Passenger so my headers aren’t getting set. How do I control headers for static files when using Passenger?

snippet from my environment.rb:

if defined? Mongrel::DirHandler   module Mongrel     class DirHandler       def send_file_with_expires(req_path, request, response, header_only=false)          if req_path =~ /((\/images)|javascripts|stylesheets)/           response.header['Cache-Control'] = 'max-age=315360000'           response.header['Expires'] = (Time.now + 10.years).rfc2822         else           response.header['Last-Modified'] = Time.now.httpdate           response.header['Expires'] = 0           # HTTP 1.0           response.header['Pragma'] = 'no-cache'           # HTTP 1.1 ‘pre-check=0, post-check=0′ (IE specific)           response.header['Cache-Control'] = 'no-store, no-cache, must-revalidate, max-age=0, pre-check=0, post-check=0'         end          send_file_without_expires(req_path, request, response, header_only)       end       alias_method :send_file_without_expires, :send_file       alias_method :send_file, :send_file_with_expires     end   end end 

Answer 1

Since you’re using Passenger, I assume you’re under apache, so your request isn’t going through Mongrel anymore. If so, you can establish rules on the .htaccess file inside the public directory of your application.

Here’s an explination on how to do it.