Dynamic page routes with friendly_id

config-initializers-page_constraint.rb

#config/initializers/page_constraint.rb
class PageConstraint
  def initialize
    @page_paths = Page.all.map { |p| "/#{p.friendly_id}"}
  end

  def matches?(request)
    @page_paths.include?(request.path)
  end

end

config-routes.rb

# config/routes.rb
DummyApp::Application.routes.draw do
  resources :pages, :path => '/', :only => :show, :constraints => PageConstraint.new
  # if these are the other way around the show path won't be creted
  resources :pages, :except => :show
end