Hack for CanCan load_resource on Rails 4.

cancan.rb

# Hack to get strong_parameters working

CanCan::ControllerResource
class CanCan::ControllerResource
  protected

  # Before using @params[whatever], CanCan will try calling whatever_params
  def resource_params_by_namespaced_name
    @controller.send(:"#{extract_key(namespaced_name)}_params")
  rescue NoMethodError
    @params[extract_key(namespaced_name)]
  end
end