[Rails] Apache proxy to lighttpd leads to Rails routing error

Aaron Wieberg
2006-04-28T15:22:58Z

Hello,

I have an issue I am having trouble figuring out.  I have a Rails app
running through lighttpd which is accessed through an Apache proxy.

My apache config:

<location /rails/>
        ProxyPass http://localhost:81/
        ProxyPassReverse http://localhost:81/
</location>

RewriteEngine On
RewriteRule ^/rails/(.*) http://localhost:81/$1 [P]


So when apache sees /rails/ it sends the request over to lighty.

Lighttpd config for the rails app:

$HTTP["url"] =~ "^/feedback/" {
  server.document-root = "/var/www/webapps/feedback/public/"
  alias.url = ( "/feedback/" =>
"/var/www/webapps/feedback/public/" )
  server.error-handler-404 = "/feedback/dispatch.fcgi"
  index-file.names = ( "index.html", "dispatch.fcgi" )
  fastcgi.server = ( ".fcgi" =>
    (( "socket" => "/tmp/feedback.fastcgi.socket",
       "bin-path" =>
"/var/www/webapps/feedback/public/dispatch.fcgi",
       "bin-environment" => ( "RAILS_ENV" =>
"development"),
       "min-procs" => 1,
       "max-procs" => 1
  )))
}


And then I have this in routes.rb so it can generate the right URLs:
ActionController::AbstractRequest.relative_url_root =
"/rails/feedback"

So this all works.  If I point my browser at
https://rd-webdev/rails/feedback/ I get the default page from my app.
But if I try to go to a URL with the controller/action specified I get a
routing error.

For example, using this URL:
https://rd-webdev/rails/feedback/submit/product/tracker

Rails says:
Routing Error

Recognition failed for "t/product/tracker"

So it cuts off part of the url after rails gets it.  So I know rails is
getting it, but somewhere after that the URL is changed incorrectly.
My guess as to whats happening is that Rails takes the URL it gets
(which is feedback/submit/product/tracker after lighty gets it) and
removes the relative_url_root (/rails/feedback) from that.

 feedback/submit/product/tracker
-/rails/feedback
=t/product/tracker

Any way around this?  Sorry for the long post...  Thanks!

Aaron

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