Rails Action Cache

caches_action.rb

class ListsController < ApplicationController
  before_filter :authenticate, :except => :public

  caches_page :public

  caches_action :index, :if => proc do
    !request.format.json?  # cache if is not a JSON request
  end

  caches_action :show, :cache_path => { :project => 1 },
    :expires_in => 1.hour

  caches_action :feed, :cache_path => proc do
    if params[:user_id]
      user_list_url(params[:user_id, params[:id])
    else
      list_url(params[:id])
    end
  end
end


# http://api.rubyonrails.org/classes/ActionController/Caching/Actions.html

caches_actions.rb

class ListsController < ApplicationController
  before_filter :authenticate, :except => :public

  caches_page :public

  caches_action :index, :if => proc do
    !request.format.json?  # cache if is not a JSON request
  end

  caches_action :show, :cache_path => { :project => 1 },
    :expires_in => 1.hour, :layout => false

  caches_action :feed, :cache_path => proc do
    if params[:user_id]
      user_list_url(params[:user_id, params[:id])
    else
      list_url(params[:id])
    end
  end
end


# http://api.rubyonrails.org/classes/ActionController/Caching/Actions.html

gistfile1.txt

caches_action :my_action, :cache_path => Proc.new { |controller| controller.params }

caches_action :action_one, :action_two,
  :cache_path => Proc.new { |c| c.params.delete_if { |k,v| k.starts_with?('utm_') } },
  :expires_in => 4.hours,
  :unless => Proc.new { |c| c.request.xml_http_request? || c.send(:current_user).try(:admin?) }


References:
http://guides.rubyonrails.org/caching_with_rails.html
http://cobaltedge.com/rails-action-caching-with-query-parameters