traversing params

gistfile1.rb

class HashWithIndifferentAccess
  def get_to(*keys)
    subhash = self
    keys.each do |k|
      subhash = subhash.try(:[], k)
      return nil if subhash.nil?
    end
    if block_given? && subhash.any?
      yield subhash
    else
      subhash
    end
  end
end

def update 
  p params.get_to(:ad, :ad_club_availability_attributes, :foo)
end