Decoupling Webmachine dispatcher and resource life cycles

resource.rb

# Please ignore this solution. It's too complicated :-(

require "webmachine"

class MyResource
  include Webmachine::Resource::Callbacks
  include Webmachine::Resource::Tracing

  attr_reader :model, :request, :response

  def initialize(args={})
    @model    = args.fetch(:model, Object)
    @request  = args.fetch(:request)
    @response = args.fetch(:response) 
  end

  def to_html
    model.class.to_s
  end
end

# Allow duck typing

class Webmachine::Dispatcher::Route

  def initialize(path_spec, *args)
    if args.last.is_a? Hash
      bindings = args.pop
    else
      bindings = {}
    end

    resource = args.pop
    guards = args
    guards << Proc.new if block_given?

    @path_spec = path_spec
    @guards    = guards
    @resource  = resource
    @bindings  = bindings
  end
end

Mock = Class.new

App = Webmachine::Application.new do |app|

  app.routes do
    add [], MyResource

    self.resource_creator = ->(route, request, response) do
      route.resource.new(model: Mock.new, request: request, response: response)
    end
  end
end.run