init.rb

renren_config = "#{RAILS_ROOT}/config/renren.yml"

require 'renren'
require "renren/rails/controller"
require "renren/rails/helpers"
require "renren/rails/extensions/action_controller"
require "renren/rails/renren_url_rewrite"

Renren.load_configuration(renren_config)

ActionController::Base.send(:include, Renren::Rails::Controller) 

class ActionController::Routing::Route
  def recognition_conditions_with_renren
    defaults = recognition_conditions_without_renren 
    defaults << " env[:canvas] == conditions[:canvas] " if conditions[:canvas]
    defaults
  end
  alias_method_chain :recognition_conditions, :renren
end

# We turn off route optimization to make named routes use our code for figuring out if they should go to the session
# If this fails, it means we're on rails 1.2, we can ignore it
begin
  ActionController::Base::optimise_named_routes = false 
rescue NoMethodError => e
  nil
end

# pull :canvas=> into env in routing to allow for conditions
ActionController::Routing::RouteSet.send :include,  Renren::Rails::Routing::RouteSetExtensions
ActionController::Routing::RouteSet::Mapper.send :include, Renren::Rails::Routing::MapperExtensions