Manually cache the content in the key determined by path. Example:
cache_page "I'm the cached content", "/lists/show"
# File lib/action_controller/caching/pages.rb, line 74 74: def cache_page(content, path) 75: return unless perform_caching 76: path = page_cache_path(path) 77: 78: instrument_page_cache :write_page, path do 79: FileUtils.makedirs(File.dirname(path)) 80: File.open(path, "wb+") { |f| f.write(content) } 81: end 82: end
Caches the actions using the page-caching approach that’ll store the cache in a path within the page_cache_directory that matches the triggering url.
Usage:
# cache the index action caches_page :index # cache the index action except for JSON requests caches_page :index, :if => Proc.new { |c| !c.request.format.json? }
# File lib/action_controller/caching/pages.rb, line 94 94: def caches_page(*actions) 95: return unless perform_caching 96: options = actions.extract_options! 97: after_filter({:only => actions}.merge(options)) { |c| c.cache_page } 98: end
Expires the page that was cached with the path as a key. Example:
expire_page "/lists/show"
# File lib/action_controller/caching/pages.rb, line 63 63: def expire_page(path) 64: return unless perform_caching 65: path = page_cache_path(path) 66: 67: instrument_page_cache :expire_page, path do 68: File.delete(path) if File.exist?(path) 69: end 70: end
# File lib/action_controller/caching/pages.rb, line 111 111: def instrument_page_cache(name, path) 112: ActiveSupport::Notifications.instrument("#{name}.action_controller", :path => path){ yield } 113: end
# File lib/action_controller/caching/pages.rb, line 101 101: def page_cache_file(path) 102: name = (path.empty? || path == "/") ? "/index" : URI.unescape(path.chomp('/')) 103: name << page_cache_extension unless (name.split('/').last || name).include? '.' 104: return name 105: end
Disabled; run with --debug to generate this.
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