new_sweeper.rb

class CompanySweeper < ActionController::Caching::Sweeper

  observe Company, Comment, Document, Order, Trade
  
  %w( create update destroy ).each do | action |
    define_method( "after_#{action}") do | instance | 
      %w( index companies/* pages/home ).each { |p| `rm -rf public/cache/views/#{p}.html.cache` }
    end
  end
   
end