Goliath + http_router.rb

rack_routes.rb

require 'goliath'
require 'http_router'

# https://github.com/joshbuddy/http_router
HttpRouter::Rack.override_rack_builder!

class RackRoutes < Goliath::API
  map('/get/:id') do |env|
    [200, {'Content-type' => 'text/plain'}, ["My id is #{env['router.params'][:id]}\n"]]
  end
end

# [0:17:12] igrigorik:~ > curl localhost:3000/get/12    
# My id is 12

how about

  map(':id', :methods => [:get]){|env| ... }
  map(':id', :methods => [:post, :put]){|env| ... }
  map(':id'){|env| ... }  # will catch all remaining