first stab at a webmachine-ruby resource def'n

gistfile1.rb

require 'evaluation'

class EvaluationsResource < Webmachine::Resource
  class << self
    alias_method :let, :define_method
  end

  let(:allowed_methods) { ["GET", "POST"] }
  let(:content_types_provided) { [["application/json", :to_json]] }
  let(:content_types_accepted) { [["application/json", :from_json]] }
  let(:resource_exists?) { !request.path_info.has_key?(:id) || Evaluation.exists?(request.path_info[:id]) }
  let(:post_is_create?) { true }
  let(:allow_missing_post?) { true }
  let(:create_path) { "/evaluations/#{create_resource.id}" }
  let(:from_json) { request.body.rewind; JSON.parse(request.body.read) }
  let(:to_json) { resource_or_collection.to_json }

  protected

  def create_resource
    @resource = Evaluation.create(from_json)
  end

  def resource
    @resource ||= Evaluation.find_by_id(request.path_info[:id])
  end

  def collection
    @collection ||= Evaluation.all
  end

  def resource_or_collection
    resource || collection
  end
end