Pakyow Presenter State

example.rb

# Demonstration of how state will be passed from the route context to presenter.
# Presentation will not occur in the routing context, so only what is exposed is available.

module Helpers
  presentable :current_user, :current_resource

  def current_user
    @current_user ||= data.user.find(session[:user])
  end

  def current_resource
    # does the right thing based on the route; optional to use
  end
end

resource :post do
  include Helpers

  new do
    handle 403 unless current_user.can?(:create_post)

    # view is auto-rendered based on the url
  end

  create do
    current_resource.save

    handle ValidationError do
      # calls the `new` route, which presents the form
      # for the resource we just tried to save
      reroute :post_new
    end
  end
end

view "/posts/new" do
  # not sure about this syntax, but this sets up the
  # form for the resource we are presenting
  form_for(current_resource).setup
  
  # we also have access to `current_user` here
end