Rails refuses to load a session from the data sent by swfupload

Question

I'm using swfupload's most recent version, 2.2.0 and rails 2.3.3. Having seen a number of statements to the effect that I would have to replace CGI::Session.initialize with a chunk of code to extract the session from key-value pairs injected into my form url, I incorporated the code segment into my environment.rb:

require 'cgi'
class CGI::Session
    alias original_initialize initialize
    def initialize(request, option = {})
        session_key = option['session_key'] || '_session_id'
        query_string = if (qs = request.env_table["QUERY_STRING"]) and qs != ""
            qs
        elsif (ru = request.env_table["REQUEST_URI"][0..-1]).include?("?")
            ru[(ru.index("?") + 1)..-1]
        end
        if query_string and query_string.include?(session_key)
            option['session_id'] = query_string.scan(/#{session_key}=(.*?)(&.*?)*$/).flatten.first
        end
        original_initialize(request, option)
    end
end

I do see the session info being correctly packed into the form parameters as files are uploaded, but the above code is never firing to bring the session info out of the database.

What's the secret sauce to get from params-packed session id and authenticity tokens (they're not being picked up from the params, either)?

Answer 1

Rack middleware to the rescue