0_resourceful_actions.rb

# app/resourceful_api/resourceful_actions.rb

# Requires #params, #render, Presenters::Api
module ResourcefulAction
  def presents_json_endpoints(service, *actions)
    respond_to :json
    actions.each do |action| 
      define_method action do 
          resp = Presenters::Api.call(service,action, params)
          render :json => resp, :status => resp[:status]
      end
    end
  end
end

1_rides_controller.rb

class RidesController < ApplicationController
  skip_before_filter :verify_authenticity_token
  extend ResourcefulActions
  presents_json_endpoints Services::Ride, 
    :send_payment_confirmation,
    :book,
    :confirm,
    :cancel,
    :pay,
    :rate,
    :status
end

#vs:

class RidesController < ApplicationController
  skip_before_filter :verify_authenticity_token
  respond_to :json

  def book
    resp = Presenters::Api.call(Services::Ride, :book, params)
    render json: resp, status: resp.status
  end

  def confirm
    resp = Presenters::Api.call(Services::Ride, :confirm, params)
    render json: resp, status: resp.status
  end

  def cancel
    resp = Presenters::Api.call(Services::Ride, :cancel, params)
    render json: resp, status: resp.status
  end

  def pay
    resp = Presenters::Api.call(Services::Ride, :pay, params)
    render json: resp, status: resp.status
  end

  def rate
    resp = Presenters::Api.call(Services::Ride, :rate, params)
    render json: resp, status: resp.status
  end

  def status
    resp = Presenters::Api.call(Services::Ride, :status, params)
    render json: resp, status: resp.status
  end
end

2_messages_controller.rb

class MessagesController < ApplicationController
  extend ResourcefulActions
  presents_json_endpoints Services::Ride, :send_payment_confirmation
end

# vs:

class MessagesController < ApplicationController
  respond_to :json
  def send_payment_confirmation
     resp = Presenters::Api.call(Services::Ride, :send_payment_confirmation, params)
     render json: resp, status: resp.status
  end
end

That sounds discouraging. Not meant to be.

That's pretty slick. I was thinking we might need custom params filtering for each action but each service/call that needs something from the params can return errors if something is missing or invalid.