module SanitizeParams
  
  include WhiteListHelper

  def sanitize_params(params = params)
    params = walk_hash(params) if params
  end

  def walk_hash(hash)
    hash.keys.each do |key|
      if hash[key].is_a? String
        hash[key] = white_list(hash[key])
      elsif hash[key].is_a? Hash
        hash[key] = walk_hash(hash[key])
      elsif hash[key].is_a? Array
        hash[key] = walk_array(hash[key])
      end
    end
    hash
  end

  def walk_array(array)
    array.each_with_index do |el,i|
      if el.is_a? String
        array[i] = white_list(el)
      elsif el.is_a? Hash
        array[i] = walk_hash(el)
      elsif el.is_a? Array
        array[i] = walk_array(el)
      end
    end
    array
  end

end