From: Dimitri Aivaliotis <aglarond@...>
Date: 2005-01-07T01:04:11+09:00
Subject: Re: What's missing? (was Re: Best ways to accelerate Ruby's popularity)

On Fri, 7 Jan 2005 00:08:53 +0900, Douglas Livingstone
<rampant@gmail.com> wrote:

> Browser-friendly error messages would be *very* helpful; knowing what
> is wrong would be easier to work with than just getting a 500 error.
> 

Try this:

---- begin 500.rbx----

r = Apache.request
rp = r.prev
r.content_type = 'text/plain'
r.send_http_header

puts "Something unexpected happened.  Please report the following to
the site administrator.\n"
    if !rp.nil?
      puts rp.connection.remote_ip
      puts 'uri: ' + rp.uri
      puts ENV.inspect
      puts rp.error_message.to_s
      puts rp.headers_in.to_a.inspect
    end

----end 500.rbx----


I've been using that for awhile (forgot where I first saw it...).  Set
up 500.rbx as an ErrorDocument in Apache:

ErrorDocument 500 /path/from/document/root/to/500.rbx

and make sure that mod_ruby handles your *.rbx files:

  <Files *.rbx>
  SetHandler ruby-object
  RubyHandler Apache::RubyRun.instance
  </Files>

HTH,

- Dimitri