```ruby
class ApplicationController < ActionController::Base
  self.page_cache_directory = "#{Rails.root}/public/cached_pages"
  protect_from_forgery with: :exception

  def self.expire_about
    expire_page('/cached_pages/about.html')
  end

  def self.expire_home
    expire_page('/cached_pages/index.html')
  end
end
```

Fix correct path for expiring cached pages, oops
user
```ruby
class ApplicationController < ActionController::Base
  self.page_cache_directory = "#{Rails.root}/public/cached_pages"
  protect_from_forgery with: :exception

  def self.expire_about
    expire_page('about.html')
  end

  def self.expire_home
    expire_page('index.html')
  end
end
```
assistant