ingredients_sweeper.rb

class IngredientsSweeper < ActionController::Caching::Sweeper

  observe Ingredient

  def after_save(record)
    expire_action :controller => "ingredients",
                  :action => "index",
                  :format => :json
    expire_action :controller => "ingredients",
                  :action => "show",
                  :id => record.id,
                  :format => :json
  end
end