sample nesta app.rb

nesta-app.rb

# Use the app.rb file to load Ruby code, modify or extend the models, or
# do whatever else you fancy when the theme is loaded.

require 'rubygems'
require 'sinatra'

module Nesta
  
  class App

    helpers do
      # Add new helpers here.
      def set_common_variables
        @menu_items = Nesta::Menu.for_path('/')
        @site_title = Nesta::Config.title
        set_from_config(:title, :subtitle, :google_analytics_code)
        @heading = @title
      end
   
      def get_article_categories
        @page.find_articles_with_categories
      end
    end
   
    # Add new routes here.
  end
  
  class Page
    def find_articles_with_categories
       Page.find_articles.select{ |a| !a.categories.empty? }
    end
  end
end